Archive for the ‘Eco-Patents’ category

Lumiette’s Bulbs Are Still Fluorescents, but They’re Flatter, Brighter and More Efficient

February 15th, 2009

When South Korean company Mirae Lighting (Mirae) ran out of money before it could start manufacturing its flat panel lights for backlighting LCD TVs, Cupertino, California startup Lumiette, Inc. (Lumiette) bought Mirae’s patent portfolio covering the lighting technology and manufacturing methods in the hopes of selling the flat lights for ordinary residential lighting purposes.

The patent portfolio includes pending patent applications Pub. No. 2006/0279215 and 2007/0247070 (’070 application) directed to flat fluorescent lamps.  Though the lamps work essentially the same way as standard fluorescent bulbs, the difference is that the electrodes 140 are external to the channels 111 on electrode sections 111a, so the bulbs can be made very thin, four millimeters thin to be exact.

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According to this greentech media interview with a Lumiette employee, the bulbs also include a reflection layer between the flat glass back panel and the formed glass in front, which reflects light forward and boosts efficiency.  Because the system efficiency is so much greater than in standard fluoroscent bulbs (about 90% versus 60% range), Lumiette’s flat panel lights last longer than fluorescents. 

Lumiette also claims that its lights are as bright as LEDs but at a substantially reduced cost.  It’s good to know that substantial energy efficiency doesn’t always require radically new technology but can be achieved with incremental changes to existing technology.

Cleveland Professor’s Groovy Wind Towers Could Bring Wind Power to Cities

January 17th, 2009

Deployment of wind power is hampered by the difficulties of transfering energy from the rural areas where wind farms typically operate to the densely populated areas that need the energy. 

Dr. Majid Rashidi, a mechanical engineering professor at Cleveland State University, has designed wind towers that can be mounted on top of city buildings to allow electricity to be generated in large population centers.

Dr. Rashidi has at least two pending patent applications covering his technology.  One of his designs is a helical tower with spiraling grooves, described in U.S. Patent Application Pub. No. 2008/0279690 (’690 application).

The wind tower of the ’690 application has a helical structure (110) and a spiraling groove (120) defined by adjacent spiraling threads (119, 121).  The groove and threads extend around the longitudinal axis (140) of the helical structure’s central core (320).

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In one embodiment of the invention, the helical structure is about 130 feet tall and about 30 feet in diameter.  Turbines (130) having blades with 6-10 foot propeller diameter are positioned at least partially within the spiraling groove (120) of the helical structure (110).

U.S. Patent Application Pub. No. 2009/0015017 (’017 application) just published last week (U.S. patent applications typically are published 18 months after their filing date).  The ’017 application is directed to a wind power system that deflects wind into two separate flow paths.

The wind deflector (20) has a cylindrical shape to optimize its acceleration effects on air flow.  It includes an interior deflector frame (25) surrounded by a cylindrical shell (24).  The wind deflector (20) has a top spindle (28) fixed to the frame (25) and bottom spindle (27).

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Top and bottom cross members (41 and 45) can be rotated with respect to spindles (27 and 28) to position the turbines (30) into the wind.  A drive shaft (35) and a mounting frame (40) also rotate to optimize the turbines’ positions to face the prevailing wind.

Each drive shaft is coupled to a generator (38), and wires (56) carry the electrical power from the generators through an exit connection (59) and on to the city building that needs power.

According to this Ecogeek article, Dr. Rashidi’s towers won’t replace wind turbines, but can complement them to provide onsite power to buildings in large population centers.

Boston-Power’s Battery Technology to Boost HP PCs

January 13th, 2009

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Boston-Power, a Massachusetts advanced battery company, makes lithium-ion batteries that charge faster and last longer than conventional lithium-ion batteries. 

Last month, Boston-Power announced that Hewlett-Packard (HP) would be its first customer and would offer its Sonata battery as an upgrade option in select HP notebook PCs in early 2009.  (see the greentechmedia piece here and the New York Times article here)

Boston-Power owns several U.S. patent applications covering its battery technology, including U.S. Application Pub. Nos. 2008/0008928 (’928 application) and 2008/0008933 (’933 application).

Conventional lithium-ion batteries have a cathode (an electrode that circulates electrons) made of lithium cobalt.  The ’933 application is directed to a blend of two or more different types of cathode materials in the positive electrode which enables manufacturing of larger cells than conventional lithium-ion batteries that use lithium cobalt alone. 

According to the ’933 application, increasing capacity through these larger cells is a better solution than increasing the number of cells, which raises the probability of over-charge or over-discharge.

The ’928 application is directed to a battery integrated with a current interrupt device (CID).  When lithium-ion batteries are improperly charged, exposed to high temperatures, or are short circuited, they may produce gas, and the pressure increase can be dangerous. 

CIDs protect against excessive internal pressure increases in batteries by interrupting the current path when pressure increases.  However, according to the ’928 application, CIDs incorporated within batteries take a lot of space and limit battery capacity.

The invention of the ’928 application is a battery in which at least a portion of the CID (28) may be located external to the battery can (21) because the CID is in electrical communication with the battery can.  Specifically, at least one of the cell casing (22) and the lid (24) of the battery can (21) are in electrical communication with the second electrode (14) of the battery (10) through the CID (28).

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Boston-Power’s technology provides significant advantages over the competition.  According to the greentech media article, Boston-Power’s batteries take a half hour to charge to 80% capacity, instead of 2 hours for an ordinary battery. 

Also, the batteries can last about 1,000 charging cycles (i.e. three years), before the charging capacity becomes substantially diminished, whereas conventional lithium-ion batteries go about 300 cycles or fewer.  As a result, HP will provide a 3-year warranty with the Sonata battery.

LED Shareholder Derivative Suit Has an IP Twist

January 4th, 2009

This is something I haven’t seen before:  a shareholder derivative action for patent infringement. 

BaoLiang Wang (Plaintiff Wang) is a 22% shareholder of a small California LED sign maker called Sun LED Sign Supply Inc. (Sun). 

Last month, Plaintiff Wang sued Sun, two of its directors, Xiao Ping Wang (Defendant Wang) and Wei Rong Fang, as well as JT LED USA (JT), Sunfire LED, LLC (Sunfire) and The LED, Inc. in federal court in Los Angeles, alleging patent infringement against all defendants and unfair competition against the two directors of Sun.

The patent at issue is U.S. Patent No. 7,245,279 (’279 patent), for which Defendant Wang is the named inventor.

The ’279 patent is directed to an easily extendable waterproof LED display array.  Each LED unit comprises a tray-like housing (62) containing a printed circuit board (55).  LED elements (31) are soldered onto the circuit board, and an outer covering (45) is attached to the opening of the housing.

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A liquid gel provides a watertight seal for the elements on the PCB.  Each unit has a positive power source (20) and a negative power source (21).  According to the ’279 patent, a significant advantage of the invention is that each LED display unit has its own waterproof arrangement, so each unit can function separately, allowing LED displays of variable length at low cost.

According to the complaint (wang_complaint.pdf), while the application that issued as the ’279 patent was pending, Defendant Wang assigned the application to Sun, “giving the exclusive right to [Sun] for a period of eight (8) years.”  The U.S. Patent & Trademark Office patent assignments database lists Sun as the assignee of the ’279 patent.

The patent count of the complaint alleges that defendants’ JT-SLS01, JT-SLS02 and JT-SLS03 series products and similar waterproof LED devices infringe the ’279 patent.  Defendant LED, Inc. is also accused of selling infringing LED modules.

Under the unfair competition claim the complaint alleges, on information and belief, that Defendant Wang:

. . . via false pretense and deceit, executed assignment of the 279 patent to himself on or about 4/23/2007, without proper corporate authority, violating the previous 8-year requirement, and in an attempt to avoid patent infringement liability.

The complaint goes on to accuse Defendant Wang of using the patented technology to conduct his own business, JT LED USA, dba Jia Tang Electronic Company, in violation of Sun’s exclusive right. 

Plaintiff Wang is asking the court to find defendants liable for patent infringement, to compensate him for his losses and to assess punitive damages on defendants for their alleged fraudulent acts.

So it’s a competing director type shareholder suit with an IP twist.  And because the inventor assigned away his rights, we have a situation in which the inventor is accused of infringing his own patent. 

Coskata Uses Biofilm to Make Biofuel from Biomass

December 31st, 2008

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A recent DOE newsletter reported that the U.S. Department of Agriculture (USDA) is offering loan guarantees for commercial-scale plants producing advanced biofuels (i.e., biofuels produced from materials other than corn kernel starch).  

The article mentions that U.S. Sugar Corporation (USSC) will apply for the loan guarantees to help fund a 100-million gallon per year ethanol facility in Clewiston, Florida.  

USGC has teamed up with Coskata, an Illinois cellulosic ethanol company that owns proprietary technology for converting leftover sugar cane material into ethanol.  Instead of fermenting the plant material, the Coskata process first converts it to synthesis gas, or syngas, and then ferments the gas using anaerobic microorganisms to produce ethanol.

Coskata owns two related patent applications that cover its ethanol production technology.  Patent Application Pub. Nos. 2008/0305539 and 2008/0305540 are directed to a membrane supported bioreactor system for converting syngas to biofuels (collectively “Bioreactor Applications”).  Both applications published on December 11, 2008.

According to the Bioreactor Applications, some major challenges of the gasification and fermentation approach to ethanol production are that it requires large quantities of syngas, highly efficient dissolution and transfer of the gas to microorganisms, and growth and maintenance of a large density of microorganisms. 

Some bioreactors increase the density of the microorganisms using membranes to develop biofilms, but these reactors must be very large or they won’t provide sufficient gas dissolution rates.

The Bioreactor Applications overcome these drawbacks by using one side of a membrane as the syngas contact surface and the opposite side as the surface for growing the microorganisms.  The gas is fed onto the contact side and transported through the membrane to a biofilm of anaerobic microorganisms, where it is fermented into biofuels.

According to the Bioreactor Applications:

 The result is a highly efficient and economical transfer of the syngas at essentially 100% dissolution and utilization, overcoming limitations for the other fermentation methods and fermenter configurations. The syngas diffuses through the membrane from the gas side and into the biofilm where it is transformed by the microbes to the soluble product of interest. Liquid is passed in the liquid side of the membranes via pumping, stirring or similar means to remove the ethanol and other soluble products formed; the products are recovered via a variety of suitable methods.

If the USSC-Coskata project comes to fruition, it would be the world’s largest second generation (made of non-food biomass) ethanol facility (see the Green Car Congress article here) and would be a testament to the power of using biofilm to convert biomass to biofuel.

SmartLabs Enjoined; Parties’ Smart Management Focuses Issues in Energy Meter Litigation

December 24th, 2008

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P3 International (P3) is a New York consumer electronics company that makes the Kill A Watt electric power meter.  The Kill A Watt meter allows consumers to determine how much energy particular appliances are using.  You simply plug the meter into the wall, plug the appliance into the meter, and monitor the energy consumption of the appliance on the meter’s LCD display. 

The Kill A Watt meter is protected by U.S. Patent No. 6,095,850 (’850 patent), which is directed to an electric adapter (1) having a plug (2) on its rear side which can be plugged into an electric socket (7).  The adaptor has an outlet socket with three holes (3a, 3b, 3c) on the front and a display (4) to show electrical parameters of the appliance being monitored.

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When the user presses the display mode selection switch (6) the display (4) shows, in sequence, voltage level, current value, watt, kilowatt-hour, apparent power value and power factor.

P3 is the exclusive licensee of the ’850 patent.  In June, P3 sued SmartLabs Inc. (SmartLabs), UPM Marketing Inc.  and UPM Technology USA, inc. (collectively “UPM”) in federal court in Manhattan alleging that the electric device makers were infringing the ’850 patent. 

According to the complaint (p3_complaint.pdf), UPM’s infringing devices are the EM100, EM130, EM338 and EM369 Plug-in Energy Meters infringe, and SmartLabs also imports and sells some of UPM’s meters.  The complaint also alleged that SmartLabs intends to import and sell an infringing “Save-A-Watt” energy meter.

In August, the defendants filed counterclaims for declaratory judgment of noninfringement, invalidity and unenforceability of the ’850 patent (smartlabs_answer.pdf).

This month Judge Denise L. Cote signed a stipulation and order (p3_order.pdf) temporarily enjoining SmartLabs from making, importing, offering for sale or selling the Save-A-Watt meter pending the result of the lawsuit.  

The temporary injunction ordered by Judge Cote is one component of an agreement between P3 and SmartLabs to narrow the issues and focus the case.  The two parties also agreed to sever from the suit the issue of SmartLabs’ infringement of the ’850 and to dismiss with prejudice SmartLabs’ counterclaim of noninfringement.

Thus, the case between P3 and SmartLabs will only go forward on the issues of validity and enforceability of the ’850 patent.  If P3 prevails and at least one claim of the patent is found to be valid and enforceable, SmartLabs will be permanently enjoined from moving forward with its Save-A-Watt meter:

It is further stipulated and agreed that, once this case is finally terminated by order, judgment, decree, dismissal, settlement or otherwise, if any one of claims 1, 4, 5, 6, 7, 10 or 11 of United States Patent No. 6,095,850 has not been adjudged to be invalid or unenforceable, SmartLabs shall be permanently enjoined, by this Stipulation and Order, from making, importing into the United States, selling or offering for sale the Save-A-Watt during the term of that patent…

Since SmartLabs hasn’t sold any of the allegedly infringing devices yet, there are no money damages to be gained by P3 through a full court press on infringement.  This stipulation is a good example of a sensible, efficient approach to patent litigation (in contrast to the Nichia-Seoul Semiconductor lawsuit I blogged about here and here) where the parties expend legal fees and use court time only as necessary to decide the issues that actually matter for disposition of the case. 

Open Energy Shows Versatility with Energy Management and Solar Solutions

November 19th, 2008

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Open Energy Corp. (Open Energy) is a Solana Beach, California company that develops solar products and energy management solutions. 

Open Energy recently announced the launch of its EcoTouch Energy Management System (EcoTouch), which the company is developing and marketing in partnership with Advanced Telemetry.  The EcoTouch system is designed to provide homeowners with detailed information about their energy use and improved ability to conserve energy.

EcoTouch tracks and displays the total energy demand and net energy usage for a home in real time and allows homeowners to view and control different household devices to reduce their energy costs.  The system can be connected to a homeowner’s solar installation and provides detailed information including the number of kilowatt hours produced by the solar installation.

Open Energy recently filed a trademark and service mark application (ecotouch_app.pdf) for the ECOTOUCH mark for home automation systems that monitor energy consumption, in Class 9, and for computer network services for monitoring and controlling home automation systems, in Class 38.

Open Energy also owns at least two patent applications relating to photovoltaic systems for rooftops.  U.S. Application Pub. No. 2005/0178428 (’428 application) is directed to a layered system for roof mounting that is specifically designed for use with large photovoltaic cells. 

The system of the ’428 application includes a flexible base membrane layer on the bottom that attaches to the roof, a photovoltaic layer, a semi-rigid layer to provide rigidity to the PV layer, and a top, transparent layer to protect the other layers.  The four layers are attached to form a unitary structure.

U.S. Application Pub. No. 2008/0149163 (’163 application) is directed to a system for mounting photovoltaic cells.  The system comprises a tile frame (6) which houses the solar cells and expansion arms (90) with wells (96) that contain an adhesive.  The adhesive is used to bond protective covers to the tiles.

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The tile frames also have openings shaped to accommodate the expansion arms and vents (110) to keep the PV cells cool.  Multiple tiles are connected by advancing the expansion arms of one tile through the openings of an adjacent tile. 

With both energy management and solar solutions, Open Energy is a diverse company targeting the clean energy market from multiple angles.

Solyndra’s Solar Cylinders are on a Roll

November 16th, 2008

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Fremont, California solar startup Solyndra has been getting a lot of attention lately for its cylindrical solar panels (see the Ecogeek story here).  Instead of traditional solar panels, which are flat, Solyndra’s thin-films are rolled into tubes.

According to the company, its panels are more productive than flat cells because they can capture direct, indirect and reflected light across their 360-degree photovoltaic surface (see Solyndra’s drawing and explanation here). 

In addition, the cylinders are mounted horizontally and packed close together so they cover more surface area and collect more sunlight.  By contrast, conventional flat panels are angled and spaced apart so the sunlight striking the spaces between the panels is not collected.

The Solyndra panels also are easier and cheaper to install than conventional panels because of the simple horizontal mounting.  In addition, the fact that they are lightweight and allow wind to blow through them often obviates the need for additional anchoring structure.

Solyndra has at least two patents that cover its cylindrical solar panels.  U.S. Patent No. 7,196,262 (’262 patent) is entitled “Bifacial elongated solar cell devices” and is directed to a solar cell assembly (400) having elongated solar cells (402).   

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Each solar cell (402) has a conductive core (404) and a semiconductor junction (410) around the circumference of the core.  An outer transparent conductive oxide layer (412) is on top of the semiconductor junction layers (410) and completes the circuit. 

According to the ’262 patent, this assembly provides the advantages of 360-degree solar cell exposure and electrical connection in series to increase voltage and minimize resistive losses across the system.

U.S. Patent No. 7,394,016, entitled “Bifacial elongated solar cell devices with internal reflectors,” improves upon the ’262 patent by adding internal reflectors to the solar panel assembly.  The reflectors are placed in between two solar cells and reflect sunlight so that a portion of the light is reflected on each adjacent solar cell.

One indication that people are favorably impressed with Solyndra is that the company recently announced sales contracts worth about $1.2 billion.

Bricor Sues Ecotech Over Seinfeldian Low Flow Showerhead Technology

November 10th, 2008

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Since low flow showerheads were installed in Jerry and Kramer’s apartment building in 1996, advances in the technology have eliminated the low impact problems that rendered the sitcom sidekicks unable to get the shampoo out of their hair (see The Showerhead).  

Bricor Analytical, Inc. (“Bricor”) is a Texas company that makes low flow water conservation products.  Bricor owns U.S. Patent Nos. 6,260,273 (’273 patent) and 7,416,171 (’171 patent), which relate to low flow showerhead technology.

Last month Bricor filed suit against Ecotech Water LLC (“Ecotech”), in federal court in Grand Rapids, Michigan, accusing its Florida-based competitor of infringing the ’273 and ’171 patents.  The complaint (bricor_complaint.pdf) did not identify which Ecotech products were alleged to infringe the patents.

Both patents are directed to “Venturi”-based vacuum valves for use with showerheads.  The Venturi effect refers to the increase in velocity that occurs when a fluid flows through a constricted section of pipe. 

According to the patents, prior low flow devices had drawbacks including incompatibility with pre-existing showerheads, a lot of moveable parts and attachments, and air entering from the outlet end, which increased clogging and fouling of the device.

Bricor’s patented valve (10) has a plug (12) with a first opening (14), a second opening (16) and a third opening (18), which forms an air suction hole.  The water flows in the direction of arrow 28. 

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Instead of air entering at the outlet end, as in prior art devices, the air enters the third opening (18).  The air mixes with incoming water and, due to the suction force, produces a hard, rushing stream of water at a reduced flow rate. 

Bricor’s patented technology conserves water while the improved shower performance presumably gets the shampoo out of your hair.

Note:  thanks to Stu Soffer for bringing this case to my attention.