Sopchak
David Sopchak, Oakland, CA US
Patent application number | Description | Published |
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20080213638 | ENGINE BLOCK FOR USE IN A FUEL CELL SYSTEM - In one embodiment, an engine block may comprise an interconnect having: a first manifold section, a second manifold section perpendicular to the first manifold section, the first manifold section and the second manifold section having a plurality of conduits to receive a gas flow, wherein the first manifold section and the second manifold section are formed from a single manifold device; a fuel cell stack housing coupled to the second manifold section to receive a fuel cell stack; and a fuel processor coupled to the first manifold section, wherein the fuel cell processor and the fuel cell stack operate at substantially the same temperature. | 09-04-2008 |
20080289180 | FUEL PROCESSOR FOR USE IN A FUEL CELL SYSTEM - A method for manufacturing a fuel processor may comprise coupling a plurality of micro-tubes in parallel to form a flow field tube array, each of the plurality of micro-tubes designed to receive a fluid flow, depositing a catalyst layer inside each of the plurality of micro-tubes, and attaching at least one burner to a first end of the flow field tube array. | 11-27-2008 |
David A. Sopchak, Oakland, CA US
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20100323278 | HIGH POWER DENSITY FUEL CELL - A phosphoric acid fuel cell according to one embodiment includes an array of microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and air electrodes formed along other of the microchannels. A method of making a phosphoric acid fuel cell according to one embodiment includes etching an array of microchannels in a substrate, thereby forming walls between the microchannels; processing the walls to make the walls porous, thereby forming a porous electrolyte support structure; forming anode electrodes along some of the walls; forming cathode electrodes along other of the walls; and filling the porous electrolyte support structure with a phosphoric acid electrolyte. Additional embodiments are also disclosed. | 12-23-2010 |
David A. Sopchak, Livermore, CA US
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20100221667 | Catalyst For Microelectromechanical Systems Microreactors - A microreactor comprising a silicon wafer, a multiplicity of microchannels in the silicon wafer, and a catalyst coating the microchannels. In one embodiment the catalyst coating the microchannels comprises a nanostructured material. In another embodiment the catalyst coating the microchannels comprises an aerogel. In another embodiment the catalyst coating the microchannels comprises a solgel. In another embodiment the catalyst coating the microchannels comprises carbon nanotubes. | 09-02-2010 |
20100273090 | Micro-Electro-Mechanical Systems Phosphoric Acid Fuel Cell - A phosphoric acid fuel cell system comprising a porous electrolyte support, a phosphoric acid electrolyte in the porous electrolyte support, a cathode electrode contacting the phosphoric acid electrolyte, and an anode electrode contacting the phosphoric acid electrolyte. | 10-28-2010 |
David Andrew Sopchak, Oakland, CA US
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20130084506 | MONITORING ELECTROLYTE CONCENTRATIONS IN REDOX FLOW BATTERY SYSTEMS - Methods, systems and structures for monitoring, managing electrolyte concentrations in redox flow batteries are provided by introducing a first quantity of a liquid electrolyte into a first chamber of a test cell and introducing a second quantity of the liquid electrolyte into a second chamber of the test cell. The method further provides for measuring a voltage of the test cell, measuring an elapsed time from the test cell reaching a first voltage until the test cell reaches a second voltage; and determining a degree of imbalance of the liquid electrolyte based on the elapsed time. | 04-04-2013 |
20150086896 | MONITORING ELECTROLYTE CONCENTRATIONS IN REDOX FLOW BATTERY SYSTEMS - Methods, systems and structures for monitoring, managing electrolyte concentrations in redox flow batteries are provided by introducing a first quantity of a liquid electrolyte into a first chamber of a test cell and introducing a second quantity of the liquid electrolyte into a second chamber of the test cell. The method further provides for measuring a voltage of the test cell, measuring an elapsed time from the test cell reaching a first voltage until the test cell reaches a second voltage; and determining a degree of imbalance of the liquid electrolyte based on the elapsed time. | 03-26-2015 |
Thomas O. Sopchak, Williston, VT US
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20090180584 | DIAGNOSTIC METHOD AND APPARATUS FOR NON-DESTRUCTIVELY OBSERVING LATCH DATA - The invention provides a circuit that can observe data within shift registers without altering the data. The circuit includes selectors connected to the inputs and outputs of the shift registers. The selectors selectively connect the input with the output of a selected shift register to form a wiring loop for the selected shift register. A control device connected to the wiring loop uses the wiring loop to cause the data to be continually transferred from the output of the selected shift register to the input of the selected shift register and back through the selected shift register in a circular manner. The control device includes a counter used for determining the length of a selected shift register and a set of registers to store, for future use when rotating data in the shift registers, the length of each shift register. The control device also includes a data output accessible from outside the circuit. An observation wire is connected to the wiring loop, and the data passes from the wiring loop to the control device through the observation wire. The control device outputs data appearing on the wiring loop as the data is circulated through the selected shift register to permit data within the selected shift register to be observed outside the circuit without altering the data within the selected shift register. | 07-16-2009 |