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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8153316 | Unitized fuel cell assembly and cooling apparatus A stackable unitized fuel cell system includes a cooling capability. A unitized fuel cell system includes a unitized fuel cell assembly having a first flow field plate, a second flow field plate, and a membrane electrode assembly (MEA) provided between the first and... | 04/10/2012 |
| 8137828 | Durable fuel cell membrane electrode assembly with combined additives A fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane comprising a first polymer electrolyte and at least one manganese compound; and one or more electrode layers comprising a catalyst and at least one cerium compound. The mem... | 03/20/2012 |
| 8119302 | One-step method of bonding and sealing a fuel cell membrane electrode assembly A method is provided for making an edge-sealed fuel cell membrane electrode assembly comprising the steps of: i) providing a suitable membrane electrode assembly lay-up; ii) positioning a suitable annular layer of a thermoplastic; and iii) applying pressure and heat... | 02/21/2012 |
| 8110320 | Method of making durable polymer electrolyte membranes A method of making a durable fuel cell polymer electrolyte membrane is provided comprising the steps of: a) providing a polymer electrolyte membrane; b) providing a solution of a salt selected from the group consisting of manganese salts and cerium salts or a suspen... | 02/07/2012 |
| 8101317 | Durable fuel cell having polymer electrolyte membrane comprising manganese oxide Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising manganese oxides which demonstrate increased durability. Methods of making same are provided. ... | 01/24/2012 |
| 8096508 | Erosion resistant films for use on heated aerodynamic surfaces The present disclosure provides a tape comprising: a) a single layer comprising a crosslinked polymer, selected from the group consisting of crosslinked polyurethane, crosslinked polyurea, and crosslinked mixed polyurethane/polyurea polymer, and b) an adhesive layer... | 01/17/2012 |
| 8092954 | Method of making a fuel cell polymer electrolyte membrane comprising manganese oxide Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising manganese oxides which demonstrate increased durability. Methods of making same are provided. ... | 01/10/2012 |
| 8071816 | Hydrofluoroacetal compounds and processes for their preparation and use The present disclosure provides a compound according to the formula: Rf1[CH(—O—CH(3-m)Rf2m)(—O—CF2—CFH—Rf3)]n [I] wherei... | 12/06/2011 |
| 8012284 | Method and apparatus for fabricating roll good fuel cell subassemblies Fabrication methods for making a gas diffusion layer incorporating a gasket (GIG) fuel cell subassemblies via roll-to-roll processes are described. A material processable by one or both of heat and pressure having spaced apart apertures is transported to a bonding s... | 09/06/2011 |
| 7948016 | Off-center deposition of organic semiconductor in an organic semiconductor device The present disclosure provides a method of making a thin film semiconductor device such as a transistor comprising the steps of: a) providing a substrate bearing first and second conductive zones which define a channel therebetween, where the channel does not borde... | 05/24/2011 |
| 7906251 | Oxygen-reducing catalyst layer An oxygen-reducing catalyst layer, and a method of making the oxygen-reducing catalyst layer, where the oxygen-reducing catalyst layer includes a catalytic material film disposed on a substrate with the use of physical vapor deposition and thermal treatment. The cat... | 03/15/2011 |
| 7906052 | Reinforced ion-conductive membranes An ion-conductive membrane that includes a first layer comprising a first ionomer, and a porous polymer substrate, where at least a portion of the first ionomer is interpenetrated within the porous polymer substrate by ionomer-induced phase separation. ... | 03/15/2011 |
| 7901829 | Enhanced catalyst interface for membrane electrode assembly A membrane electrode subassembly includes an ion conducting membrane and a microporous layer having microtextured surfaces. Complementary features of the microtextured surfaces may be formed as grooves, ridges, pyramids or other shapes. Features of the microtextured... | 03/08/2011 |
| 7847035 | Polymer electrolyte with aromatic sulfone crosslinking A method is provided for obtaining crosslinked polymers having pendent sulfonic acid groups by crosslinking through the sulfonic acid groups or their precursors with aromatic crosslinkers or aromatic pendent crosslinking groups to form aromatic sulfones. Such crossl... | 12/07/2010 |
| 7867648 | Fuel cell catalyst A method is provided for making a supported catalyst comprising nanostructured elements which comprise microstructured support whiskers bearing nanoscopic catalyst particles, where the method comprises step a) of vacuum deposition of material from at least a first c... | 01/11/2011 |
| 7863381 | Polymer composites Compositions comprising a plurality of carbon nanotubes, a host polymer, and A block copolymer comprising a first block and a second block, wherein no block is compatible with the host polymer. In one aspect, the block copolymer is amphiphilic. In another aspect, th... | 01/04/2011 |
| 7862956 | Z-axis electrically conducting flow field separator A flexible flow field separator includes a substrate layer formed of a flexible material and having first and second surfaces. A structured flow field pattern is defined on the first surface of the substrate layer. The structured flow field pattern defines one or mo... | 01/04/2011 |
| 7855160 | Catalyst ink A catalyst ink is provided, comprising: 25-95% by weight water; 1-50% by weight of at least one solid catalyst, typically a highly dispersed platinum catalyst; 1-50% by weight of at least one polymer electrolyte in acid (H+) form; and 1-50% by weight of a... | 12/21/2010 |
| 7838138 | Fuel cell electrolyte membrane with basic polymer The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydro... | 11/23/2010 |
| 7803847 | Fuel cell membrane electrode assembly Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising bound anionic functional groups and polyvalent cations, such as Mn or Ru cations, which demonstrate increased durability. Methods of making same are also prov... | 09/28/2010 |
| 7790304 | Catalyst layers to enhance uniformity of current density in membrane electrode assemblies Components that include catalyst layers used in membrane electrode assemblies (MEAs), and methods of making such components are described. The catalyst layers yield more uniform current distributions across the active area of the MEA during operation. The catalyst l... | 09/07/2010 |
| 7771181 | Gasket molding system for membrane electrode assemblies The present invention is a system for molding a gasket to a membrane electrode assembly. The system comprises a cavity defined at least in part by closable mold blocks, at least one injection gate for injecting gasket material into the cavity, a mount for retaining ... | 08/10/2010 |
| 7740962 | Compact fuel cell stack with current shunt A fuel cell assembly includes first and second compression members. Two or more membrane electrode assembly (MEA) stacks are disposed between the compression members, each MEA stack having a positive and negative end. A first current collector is electrically couple... | 06/22/2010 |
| 7740902 | Method for making oxygen-reducing catalyst layers Methods are provided for making oxygen-reducing catalyst layers, which include simultaneous or sequential stops of physical vapor depositing an oxygen-reducing catalytic material onto a substrate, the catalytic material comprising a transition metal that is substant... | 06/22/2010 |
| 7732083 | Gas diffusion layer incorporating a gasket A gas diffusion layer incorporating a gasket (GIG) is described along with assemblies incorporating the GIG subassembly. Processes for making the GIG and membrane electrode assemblies (MEAs) incorporating the GIG are also described. A GIG subassembly includes a gas ... | 06/08/2010 |
| 7687100 | Method of dry coating flow field plates for increased durability A simple and inexpensive method of making a flow field plate that exhibits increased durability under conditions of use is provided. In some embodiments, the method includes the steps of applying a dry carbon powder to a flow field surface of the flow field plate an... | 03/30/2010 |
| 7625833 | Method of making a membrane electrode assembly A method of making a five-layer membrane electrode assembly is provided which includes the steps of: providing a catalyst coated membrane web; providing a laminating station wherein the catalyst coated membrane web is drawn between a pair of laminating rollers which... | 12/01/2009 |
| 7622217 | Fuel cell nanocatalyst A fuel cell cathode catalyst is provided comprising nanostructured elements comprising microstructured support whiskers bearing nanoscopic catalyst particles; wherein the catalyst comprises platinum and manganese and at least one other metal selected from the group ... | 11/24/2009 |
| 7608334 | Oxidatively stable microlayers of gas diffusion layers The present invention is a microlayer for use with an electrically conductive porous substrate of a gas diffusion layer. The microlayer includes carbon particles and a polymeric composition of first highly-fluorinated polymers that are non-melt processable and secon... | 10/27/2009 |
| 7608323 | Protective articles The invention provides protective articles comprising a backing that comprises a fluorinated polymer and a curable adhesive on at least one layer of the backing. The protective articles of the invention may be used to provide substrates or articles of the invention ... | 10/27/2009 |
| 7608118 | Preconditioning fuel cell membrane electrode assemblies A method is presented for preconditioning fuel cell membrane electrode assemblies for use in fuel cell systems which includes exposure to saturated steam at superatmospheric pressures, typically for at least 10 minutes and more typically at least 25 minutes. Typical... | 10/27/2009 |
| 7572534 | Fuel cell membrane electrode assembly Fuel cell membrane electrode assemblies and fuel cell polymer electrolyte membranes are provided comprising bound anionic functional groups and polyvalent cations, such as Mn or Ru cations, which demonstrate increased durability. Methods of making same are also prov... | 08/11/2009 |
| 7569081 | Method for converting a fuel cell membrane web to precisely positioned membrane sheets A method is provided for automated converting of a web of a thin patterned catalyst-coated membrane to separate membrane sheets for fuel cell assembly. The membrane typically has a thickness of about one thousandth of an inch. Automated web converting involves trans... | 08/04/2009 |
| 7553578 | Fuel cell membrane electrode assembly with sealing surfaces The present invention provides a method of making a gasketed fuel cell membrane electrode assembly by simultaneously binding together the parts of the MEA, impregnating uncured elastomeric gasket material into the outer edge portions of each fluid transport layer, a... | 06/30/2009 |
| 7517604 | Fuel cell electrolyte membrane with acidic polymer An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric. ... | 04/14/2009 |
| 7514481 | Polymer electrolytes crosslinked by e-beam A method of making a crosslinked polymer is provided as well as the polymer so made, the method comprising the steps of: providing a highly fluorinated fluoropolymer, typically a perfluorinated fluoropolymer, comprising pendent groups which include a group according... | 04/07/2009 |
| 7482088 | Flow field An article bearing a flow field such as a distribution plate for use in a fuel cell is provided. The active portion of the article, i.e., the portion of the article bearing the flow field, comprises at least two subsections; a first central subsection and a second p... | 01/27/2009 |
| 7074841 | Polymer electrolyte membranes crosslinked by nitrile trimerization A method is provided for making a crosslinked polymer electrolyte, typically in the form of a membrane for use as a polymer electrolyte membrane in an electrolytic cell such as a fuel cell, by trimerization of nitrile groups contained on groups pendant from the poly... | 07/11/2006 |
| 7057806 | Scanning laser microscope with wavefront sensor An enhanced resolution scanned image of an object is produced by a scanning laser microscope which includes an illumination arm for scanning an object with a focused probe beam and a detection arm for receiving light from the object. The detection arm includes a det... | 06/06/2006 |
