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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7435505 | Fuel cell combination The invention refers to a fuel cell device comprising an electrolyte device, which comprises an alkaline electrolyte means and an acid electrolyte means, wherein the fuel cell device is formed such that at least part of at last one reaction product produced at the e... | 10/14/2008 |
| 7381487 | In-situ removal of electrolyte from gas oxidizer A method and apparatus for use with an oxidizer assembly of a fuel cell system in which the oxidizer assembly has an oxidizing unit for oxidizing anode exhaust gas containing electrolyte particulates and is adapted or conditioned so as to enable the electrolyte part... | 06/03/2008 |
| 7358001 | Process for operating a regenerative fuel cell In the regenerative fuel cell, a positive chamber is separated from a negative chamber by a cation exchange membrane. The positive chamber comprises a positive electrode and a bromine-containing electrolyte. The negative chamber comprises a negative electrode and a ... | 04/15/2008 |
| 7294424 | Solid-oxide fuel cell assembly having simplified arrangement of current collectors A solid-oxide fuel cell stack having a plurality of fuel cells connected in series and disposed as two stacks side-by-side in head-to-tail configuration, connected in series across one end and having cathode and anode current collectors mounted side-by-side on a sta... | 11/13/2007 |
| 7291410 | Orientation independent liquid fuel reservoir A fuel reservoir for a liquid fuel cell particularly useful for portable electronic devices or for a reformer, includes (a) a container defining a volume for holding a liquid fuel; (b) a wicking structure positioned within the volume and into which at least one port... | 11/06/2007 |
| 7235316 | Integrated heat management of electronics and fuel cell power system A method and apparatus for managing heat generated by a device that is powered at least in part by a direct oxidation fuel cell. Additional heat tends to improve the reaction in the direct oxidation fuel cell, and so unwanted heat produced by a powered device can be... | 06/26/2007 |
| 7201982 | Methods for fuel cell coolant systems The invention relates to a method for cooling an electrical system comprising circulating in a cooling system of the electrical system a mixture comprising a heat transfer fluid and one or more carboxylic acid salts thereof, wherein the electrical conductivity of th... | 04/10/2007 |
| 7156887 | Methods, apparatus, and systems for producing hydrogen from a fuel Methods and apparatus for producing hydrogen are provided. The methods and apparatus utilize reforming catalysts in order to produce hydrogen gas. The reforming catalysts may be platinum group metals on a support material, and they may be located in a reforming reac... | 01/02/2007 |
| 7128990 | Additives to the gas supply of fuel cells with circulating electrolytes and means to regenerate used stacks In a gas diffusion electrode the electrolyte must penetrate the pares of the electrode structure to a certain extent to establish the optimum interface between gas and liquid electrolyte, but it should not reach the gas-side of the electrodes. The best equilibrium o... | 10/31/2006 |
| 7112380 | Method and apparatus for the storage and redistribution of electrical energy A method of storage and redistribution of electrical energy comprising the steps of: producing hydrogen and oxygen through water electrolysis in an electrolyzer (1) operating under pressure; collecting the hydrogen and oxygen so obtained in respective pressur... | 09/26/2006 |
| 6994932 | Liquid fuel reservoir for fuel cells The present invention concerns a fuel reservoir for a liquid fuel cell particularly useful for portable electronic devices in which the fuel reservoir can deliver the liquid fuel regardless of the orientation. The fuel reservoir comprises (a) a container defining a ... | 02/07/2006 |
| 6977002 | Fuel reforming apparatus and the method of starting it A reforming catalyst is composed of a plurality of catalyst layers arranged in series, and when started from a low temperature, preheated air is supplied in parallel to a point upstream of each catalyst layer, thereby the catalyst in each layer is self-heated simult... | 12/20/2005 |
| 6960401 | Fuel cell purging method and apparatus A purge system for fuel cell stack includes a purge valve to regulate exhaust from the fuel cell stack in response control signals from a controller in response to a voltage across a purge cell portion of a fuel cell stack. The purge valve is opened when the voltage... | 11/01/2005 |
| 6953630 | Fuel cell anomaly detection method and apparatus A respective bipolar junction transistor is coupled across pairs of fuel cells in a fuel cell stack to monitor the voltage across each fuel cell pairs for a drop in voltage below a threshold voltage. A respective optoisolator coupled to each of the transistors produ... | 10/11/2005 |
| 6946215 | Molton hydride fuel cell A fuel cell assembly comprises at least one fuel cell. The fuel cell comprises an anode and a cathode held in a spaced apart relationship by at least one spacer element comprising an electrically insulating material. A proximal end of the spacer element is in contac... | 09/20/2005 |
| 6942105 | In-line filtration for a particle-based electrochemical power system A system for filtering particles within a multiphase fluid that comprises a particulate phase is disclosed. The system comprises a first plurality of substantially parallel, substantially planar thin slabs separated by a predetermined distance to retain particles ha... | 09/13/2005 |
| 6924049 | Electrolysis fuel cell energy plant A fuel cell device for providing electrical energy, the fuel cell device comprising a first storage tank for storing a hydrogen-based fuel, a second storage tank for storing an oxidant, a fuel cell portion having an electron input, an electrolysis portion having an ... | 08/02/2005 |
| 6913676 | Device for supplying at least two liquid media to consumers of a fuel cell system An apparatus for delivering at least two liquid media to consumers of a fuel cell system, with a feed pump is made less complicated than known apparatuses in that at least one pressure transmission unit between the at least two media is provided with at least one pr... | 07/05/2005 |
| 6911274 | Fuel cell system A fuel cell system is described which comprises a power source and a fuel storage unit. A flowable fuel is contained with the fuel storage unit. A first flow path delivers fuel from the fuel storage unit to the power source. Some or all of this fuel is deposited int... | 06/28/2005 |
| 6902838 | Cogeneration system for a fuel cell A fuel cell system and process using an organic Rankine cycle to produce shaft work to operate a fuel cell system component such as an air compressor. The air compressor delivers compressed air to a fuel cell stack. The steps of the Rankine cycle include pumping a l... | 06/07/2005 |
| 6890490 | Hydrogen absorbing tank apparatus A gas compressor and a bypass that bypasses the gas compressor are provided between a hydrogen absorbing tank and a hydrogen gas consumer device such as, for example, a fuel cell. When the hydrogen gas generating pressure is low during an initial period of the hydro... | 05/10/2005 |
| 6887600 | Regenerative fuel cell with pH control The present invention relates to a process for operating a regenerative fuel cell (RFC). The process involves circulating a first electrolyte (electrolyte 1) through the negative chamber of the cell and a second electrolyte (electrolyte 2) through the ... | 05/03/2005 |
| 6878479 | Tilted fuel cell apparatus Bipolar, tilted embodiments of high temperature, molten electrolyte electrochemical cells capable of directly converting carbon fuel to electrical energy are disclosed herein. The bipolar, tilted configurations minimize the electrical resistance between one cell and... | 04/12/2005 |
| 6869705 | Method and device for recovering water from a fuel cell A rectilinear collector into which open the outlets of the cells and which is provided with a pressure regulator, a removal tube extending rectilinearly within the collector and connected from the outside to a recovery vat into which it opens through an outlet locat... | 03/22/2005 |
| 6855660 | Rhodium electrocatalyst and method of preparation A rhodium sulfide electrocatalyst formed by heating an aqueous solution of rhodium salt until a steady state distribution of isomers is obtained and then sparging hydrogen sulfide into the solution to form the rhodium sulfide and a membrane electrode assembly with t... | 02/15/2005 |
| 6759155 | Plate construction of high temperature air-to-air heat exchanger A fuel cell system including a fuel cell stack, a reformer system, and a waste energy recovery (or heat exchanger) assembly is presented. The waste energy recovery assembly receives an anode supply and a cathode supply that are heated by exhaust gases from the fuel ... | 07/06/2004 |
| 6727015 | Fuel cell In a fuel cell which comprises at least the following elements: a) two electrodes which are each provided with at least one gas duct for a reaction gas, b) a liquid electrolyte, the respective gas ducts of the electrodes each have at least one i... | 04/27/2004 |
| 6709777 | Performance recovery process for PEM fuel cells Recovery of PEM fuel cell performance is achieved by evacuating (61, 62) or by flowing water absorbing gas (46) through, or both, the fuel flow field (12, 13, 19, 20), the air flow field (25, 26, 30, 31), and the water flow field (36, ... | 03/23/2004 |
| 6699608 | Method and apparatus for humidifying a gas flow and to a method for using such a device A method and apparatus for humidifying a gas flow includes means for atomizing a liquid into a gas feed line and means for heating the liquid. The atomizing means is provided in a spray chamber, with a heat-exchanger region for at least partially evaporat... | 03/02/2004 |
| 6627339 | Fuel cell stack integrated with a waste energy recovery system A fuel cell comprising a fuel cell stack portion integrally connected to a waste energy recovery portion by a distribution manifold is presented. The fuel cell stack portion has supply and exhaust openings. The waste energy recovery portion has flow chann... | 09/30/2003 |
| 6569309 | Fuel cell type reactor and method for producing a chemical compound by using the same Disclosed is a fuel cell type reactor for performing an oxidation reaction of a system comprising a substrate, a reductant and an oxidant, comprising: a casing; an anode which comprises an anode active material and which is ion-conductive or active specie... | 05/27/2003 |
| 6555267 | Membrane-separated, bipolar multicell electrochemical reactor A multicell assembly is constituted by alternately stacking two types of pre-assembled elements: a bipolar electrode holding subassembly and a membrane holding subassembly. The alternate stack of elements is piled over a bottom end element and the stack i... | 04/29/2003 |
| 6517963 | Carbon monoxide filter A fuel cell system includes a fuel cell having an electrode, and an electrochemical cell having a device. The electrochemical cell includes a cathode, an anode in fluid communication with the electrode of the fuel cell, and an electrolyte in electrical co... | 02/11/2003 |
| 6461495 | Process for the removal of sulfate ions from an electrolyte A method for the removal of sulfate ions from an electrolyte of an electrochemical reduction-oxidation system wherein said electrolyte comprises a halogen and in which the sulfate ions an a contaminant or interferant, which method comprises the steps of: ... | 10/08/2002 |
| 6428915 | Apparatus for regulating humidity of process air in fuel cell system A fuel cell system having a fuel cell, a gas compressor arranged to compress process air and connected to the fuel cell via an air-supply line to supply the compressed process air, a recovery unit connected to the fuel cell via an exhaust gas line, a liqu... | 08/06/2002 |
| 6406810 | Fuel cell system with cathode-side water separating devices A fuel cell system includes at least one fuel cell which contains an anode space with an inlet-side anode feed and an outlet-side anode discharge; a cathode space with an inlet-side cathode feed and an outlet-side cathode discharge; and water separating d... | 06/18/2002 |
| 6379828 | Fuel cell The present invention is concerned with a fuel cell comprising: a chamber suitable for holding an electrolyte therein; a mechanism which enables rotation of the electrolyte about an axis of rotation of the chamber; one or more structures which define one ... | 04/30/2002 |
| 6338912 | Fuel cell system having common scroll type compressor and regenerator A fuel cell system includes a fuel cell, a motor, a scroll type compressor connected to the air feeding pipe of the fuel cell and a scroll type regenerator connected to the air exhaust pipe of the fuel cell. The compressor and the regenerator share a mova... | 01/15/2002 |
| 6309769 | Carbon monoxide filter layer A carbon monoxide filter layer that can be used, for example, in an electrode unit, a fuel cell, and/or a fuel cell stack is disclosed.... | 10/30/2001 |
| 6291089 | Radial planar fuel cell stack construction for solid electrolytes A radial planar fuel cell stack comprises an internal manifold having a first interior cavity and a second interior cavity. A plurality of single cells having an anode layer, a cathode layer, and an electrolyte layer therebetween are disposed about the ma... | 09/18/2001 |
