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Joel W.
Joel W. Ager, Iii, Berkeley, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080314447 | Single P-N Junction Tandem Photovoltaic Device - A single P-N junction solar cell is provided having two depletion regions for charge separation while allowing the electrons and holes to recombine such that the voltages associated with both depletion regions of the solar cell will add together. The single p-n junction solar cell includes an alloy of either InGaN or InAlN formed on one side of the P-N junction with Si formed on the other side in order to produce characteristics of a two junction (2J) tandem solar cell through only a single P-N junction. A single P-N junction solar cell having tandem solar cell characteristics will achieve power conversion efficiencies exceeding 30%. | 12-25-2008 |
| 20090173373 | Group III-Nitride Solar Cell with Graded Compositions - A compositionally graded Group III-nitride alloy is provided for use in a solar cell. In one or more embodiment, an alloy of either InGaN or InAlN formed in which the In composition is graded between two areas of the alloy. The compositionally graded Group III-nitride alloy can be utilized in a variety of types of solar cell configurations, including a single P-N junction solar cell having tandem solar cell characteristics, a multijunction tandem solar cell, a tandem solar cell having a low resistance tunnel junction and other solar cell configurations. The compositionally graded Group III-nitride alloy possesses direct band gaps having a very large tuning range, for example extending from about 0.7 to 3.4 eV for InGaN and from about 0.7 to 6.2 eV for InAlN. | 07-09-2009 |
| 20100095998 | LOW RESISTANCE TUNNEL JUNCTIONS FOR HIGH EFFICIENCY TANDEN SOLAR CELLS - A semiconductor structure comprises a first photovoltaic cell comprising a first material, and a second photovoltaic cell comprising a second material and connected in series to the first photovoltaic cell. The conduction band edge of the first material adjacent the second material is at most 0.1 eV higher than a valence band edge of the second material adjacent the material. Preferably, the first material of the first photovoltaic cell comprises ln].χAlχN or lnt_yGayN and the second material of the second photovoltaic cell comprises silicon or germanium. Alternatively, the first material of the first photovoltaic cell comprises InAs or InAsSb and the second material of the second photovoltaic cell comprises GaSb or GaAsSb. | 04-22-2010 |
Joel W. Kleckler, Rockton, IL US
| Patent application number | Description | Published |
|---|---|---|
| 20100037867 | System for Metering a Fuel Supply - A system for metering fuel to an engine. The system includes a fuel metering valve having a throttled inlet and a throttled outlet. The system also provides regulation of redundant pump supplies of fuel to the engine. The throttling of the inlet to the fuel metering valve is provided by a valve that also functions to selectively couple a second fuel pump to the fuel metering valve. | 02-18-2010 |
| 20100037961 | Flow Compensated Proportional Bypass Valve Combined With a Control Valve - A common regulator valve is provided for a variable displacement pump fuel metering scheme in which the common regulator valve both controls working output to a pump actuator to control displacement of the variable displacement pump and also to control bypass of excess fuel flow. The regulator valve also includes a differential piston which generates a compensation force off of the bypass flow in order to compensate for changes in spring force and flow reaction force at different system pressures and operational states. As a result, errors in the metered fuel flow can be either eliminated or substantially reduced. | 02-18-2010 |
| 20110162724 | Dual-Pump Supply System With Bypass-Controlled Flow Regulator - A dual-supply fluid distribution system includes a first pump having an inlet and an outlet. The first pump is configured to supply a first fluid flow. A second pump has an inlet and an outlet, and is configured to supply a second fluid flow. A check valve is coupled between the first and second pump outlets. The check valve is configured to combine the second fluid flow with the first fluid. A bypass valve is coupled to the outlet of the first pump. The bypass valve has an integral pilot valve and is configured to permit fluid flow from the pump outlets in excess of the fluid demand to recirculate back to the first and second pump inlets. The bypass valve and integral pilot valve are configured to cause the check valve to open when the flow of fluid through the bypass valve is below a threshold amount. | 07-07-2011 |
Joel W. Varland, Carnation, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20090299991 | RECOMMENDING QUERIES WHEN SEARCHING AGAINST KEYWORDS - A query including one or more current search terms is received from a user and executed against a target database. When the query yields a number of results less than a defined search threshold (a.k.a. an “unsuccessful” search), the current search terms are compared with an associations database. The associations database includes associations between search terms in previously-executed queries that yielded less than a threshold number of results and replacement search terms that were substituted to generate a successful query yielding at least the threshold number of results. Upon finding a match between one or more of the search terms and the current search terms, the associations between the search terms and the replacement search terms are used to identify suggested replacement search terms and present them to the user. | 12-03-2009 |
| 20110106831 | RECOMMENDING QUERIES WHEN SEARCHING AGAINST KEYWORDS - A query including one or more current search terms is received from a user and executed against a target database. When the query yields a number of results less than a defined search threshold (a.k.a. an “unsuccessful” search), the current search terms are compared with an associations database. The associations database includes associations between search terms in previously-executed queries that yielded less than a threshold number of results and replacement search terms that were substituted to generate a successful query yielding at least the threshold number of results. Upon finding a match between one or more of the search terms and the current search terms, the associations between the search terms and the replacement search terms are used to identify suggested replacement search terms and present them to the user. | 05-05-2011 |