Mcdermid
John Mcdermid, Loveland, CO US
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20090198458 | Water measurement auto-networks - Water measurement auto-networks and methods of operation are disclosed herein. An exemplary method may include determining a water level at a first water measurement station in an auto-network. The method may also include reducing power to at least a transmitter at the first water measurement station to conserve battery power during an inactive state. The method may further include increasing power to the transmitter only at predetermined times to communicate the water measurement data to a second water measurement station in the auto-network. | 08-06-2009 |
John Elliott Mcdermid, Loveland, CO US
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20090198462 | Method, system and analog stimulus-response unit for determining real and imaginary components of an AC response received from a device under test - In one embodiment, samples of an AC response received from a device under test (DUT) are acquired at an interval, Δt, of k/(f | 08-06-2009 |
Scott Mcdermid, Vancouver CA
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20110256466 | MEMBRANE ELECTRODE ASSEMBLY COMPRISING A CATALYST MIGRATION BARRIER LAYER - A membrane electrode assembly for a fuel cell is disclosed, which comprises at least one porous ionomer containing layer disposed at the interface between the cathode electrocatalyst material and the ion exchange membrane of the fuel cell. The porous ionomer containing layer comprises a catalyst migration impeding compound. The membrane electrode assembly exhibits improved stability against Pt dissolution and Pt-band formation within the ion exchange membrane, hence having improved durability and lifetime performance. | 10-20-2011 |
20110318662 | PLATINUM PHOSPHIDE AS A CATHODE CATALYST FOR PEMFCS AND PHOSPHOROUS TREATMENT OF CATALYSTS FOR FUEL CELL - The present disclosure relates to a catalyst including platinum phosphide having a cubic structure, a method of making the catalyst, and a fuel cell utilizing the catalyst. The present disclosure also relates to method of making electrical power utilizing a PEMFC incorporating the catalyst. Also disclosed herein is a catalyst including a platinum complex wherein platinum is complexed with a nonmetal or metalloid. The catalyst with the platinum complex can exhibit good electro-chemically active properties. | 12-29-2011 |
20120258382 | ADDITIVES TO MITIGATE CATALYST LAYER DEGRADATION IN FUEL CELLS - Ligand additives having two or more coordination sites in close proximity can be used in the polymer electrolyte of membrane electrode assemblies in solid polymer electrolyte fuel cells in order to reduce the dissolution of catalyst, particularly from the cathode, and hence reduce fuel cell degradation over time. | 10-11-2012 |
20130022890 | SOLID POLYMER ELECTROLYTE FUEL CELL WITH IMPROVED VOLTAGE REVERSAL TOLERANCE - In solid polymer electrolyte fuel cells, an oxygen evolution reaction (OER) catalyst may be incorporated at the anode along with the primary hydrogen oxidation catalyst for purposes of tolerance to voltage reversal. Incorporating this OER catalyst in a layer at the interface between the anode's primary hydrogen oxidation anode catalyst and its gas diffusion layer can provide greatly improved tolerance to voltage reversal for a given amount of OER catalyst. Further, this improvement can be gained without sacrificing cell performance. | 01-24-2013 |
20130022891 | BILAYER CATHODE CATALYST STRUCTURE FOR SOLID POLYMER ELECTROLYTE FUEL CELL - Use of noble metal alloy catalysts, such as PtCo, as the cathode catalyst in solid polymer electrolyte fuel cells can provide enhanced performance at low current densities over that obtained from the noble metal itself. Unfortunately, the performance at high current densities has been relatively poor. However, using a specific bilayer cathode construction, in which a noble metal/non-noble metal alloy layer is located adjacent the cathode gas diffusion layer and a noble metal layer is located adjacent the membrane electrolyte, can provide superior performance at all current densities. | 01-24-2013 |
Scott J. Mcdermid, Vancouver CA
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20090136787 | FLUORINATION OF A POROUS HYDROCARBON-BASED POLYMER FOR USE AS COMPOSITE MEMBRANE - Fluorination of a porous hydrocarbon-based polymer for use as a composite membrane and, more particularly, for use as a composite proton exchange membrane for a fuel cell. The composite membrane is formed by fluorination of the porous hydrocarbon-based polymer to yield a selectively fluorinated polymer, which is then loaded with an ionomer to yield the composite membrane. | 05-28-2009 |
William J. Mcdermid, Niwot, CO US
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20080296073 | METHOD AND APPARATUS FOR DETERMINING COORDINATES OF SIMULTANEOUS TOUCHES ON A TOUCH SENSOR PAD - Apparatuses and methods are provided for determining coordinates of simultaneous touches on a touch sensor pad. A touch sensor pad includes a first plurality of resistive sensor strips on a first resistive sheet and a second plurality of resistive sensor strips on a second resistive sheet. A user touches the touch sensor pad at multiple locations simultaneously. A controller of the touch sensor pad determines coordinates of each of the multiple locations of touch independently of other touches. To determine coordinates for a touch, the controller identifies a first strip of the first plurality of resistive sensor strips of the first resistive sheet making contact with a second strip of the second plurality of resistive sensor strips of the second resistive sheet in response to the touch. The controller measures voltages of the strips to determine coordinates of the touch and measures resistance shifts in the strips due to touches to determine contact area of the touch which correlates to the types of objects causing the touch and the pressure of the touch. | 12-04-2008 |
20090009482 | TOUCH SENSOR PAD USER INPUT DEVICE - A touch sensor pad may be utilized with an electronic device to perform different types of user input functions, such as typing, drawing, moving a cursor, etc. Regions of the touch sensor pad may correspond to keys of a keyboard. A user establishes a home position at a desired location of the touch sensor pad. When a user subsequently touches the touch sensor pad, the touch sensor pad determines a relative position of the touch in reference to the home position, and determines the value of the user input or keystroke based on the relative position. The value of the user input or the keystroke may then be processed by the controller. | 01-08-2009 |
William James Mcdermid, Longmont, CO US
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20110317373 | Method and Apparatus for Interconnecting Circuit Boards - A method and apparatus are provided for the interconnection of multiple circuit boards within a device. A module is provided which comprises multiple circuit boards interconnected with a plurality of connectors. Modules may be interconnected to other modules using the same connectors. Circuit components are disposed on inner surfaces of the circuit boards of the module. Multiple circuit boards and modules are interconnected by contacts that do not require soldering, that permit the circuit boards and modules to be removably coupled to each other by the contacts, and that permit circuit boards to be positioned by a spaced amount that results in a small spacing between circuit boards. Enclosures are also provided, which allow modules to be configured and secured in both a horizontal and vertical direction. Thus, modules may be interconnected to other modules on each side, as well as interconnected to other modules stacked above or below the module. | 12-29-2011 |
20110318985 | Touch Sensor Fabric - A method and apparatus are provided for a touch sensor made from fibers with conductive and non-conductive regions. The fibers are woven into a fabric and connected to control electronics. The fibers are grouped and the ends of the fibers in a group are connected together prior to connection to the control electronics in order to reduce the number of connections required between the sensor fabric and control electronics. The control electronics drive signals to the sensor fabric and measure signals from the sensor fabric to determine touch locations and touch contact areas. | 12-29-2011 |
20120113034 | Tablet Computer Input Device - A method and apparatus are provided for user input to a tablet computer. The apparatus consists of movable grips with touch sensitive regions attached to the sides of a tablet computer. Both the positions of the grips and the location of touches are used to determine the input codes sent to the computer. | 05-10-2012 |
William James Mcdermid, Niwot, CO US
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20150355759 | Multi-Touch Resistive Touch-Screen Sensor and Controller Assembly - A method and apparatus are provided for a touch sensor made from a flexible substrate with voids and resistive conductive elements suspended within it. The voids in the substrate are positioned in the areas where conductive elements cross. The substrate holds the conductive elements apart in these voids when no pressure is applied, but allows the crossing conductive elements to come into contact when pressure from a touch is applied. The conductive elements follow a serpentine path to increase the number of crossings for a given number of conductive elements. The ends of the conductive elements are connected to control electronics around the periphery of the substrate that energizes select conductive elements with constant voltage and constant current signals and measures voltage from other conductive elements to ascertain touch locations and touch contact areas respectively. The sensor can be planner or made to follow contoured surfaces such as the outer surfaces of a mobile electronic device. | 12-10-2015 |