Assignee
PROTOTECH CO
US·21 granted patents·724 citations·filing 1973–1996
Top patents by PatentIndex Score
21 records- 0197US4331520AProcess for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriersPROTOTECH CO·Filed 1979·Granted May 25, 1982·75 cites·25 claims
- 0297US4044193AFinely particulated colloidal platinum compound and sol for producing the same, and method of preparation of fuel cell electrodes and the like employing the samePROTOTECH CO·Filed 1974·Granted Aug 23, 1977·88 cites·34 claims
- 0396US4293396AThin carbon-cloth-based electrocatalytic gas diffusion electrodes, and electrochemical cells comprising the samePROTOTECH CO·Filed 1979·Granted Oct 6, 1981·73 cites·17 claims
- 0493US4248682ACarbon-cloth-based electrocatalytic gas diffusion electrodes, assembly and electrochemical cells comprising the samePROTOTECH CO·Filed 1979·Granted Feb 3, 1981·54 cites·17 claims
- 0592US4422911AMethod of recovering hydrogen-reduced metals, ions and the like at porous catalytic barriers and apparatus thereforPROTOTECH CO·Filed 1982·Granted Dec 27, 1983·48 cites·17 claims
- 0690US4614575APolymeric hydrogel-containing gas diffusion electrodes and methods of using the same in electrochemical systemsPROTOTECH CO·Filed 1984·Granted Sep 30, 1986·57 cites·15 claims
- 0788US3992331ACatalytic platinum metal particles on a substrate and method of preparing the catalystPROTOTECH CO·Filed 1974·Granted Nov 16, 1976·38 cites·7 claims
- 0885US4647359AElectrocatalytic gas diffusion electrode employing thin carbon cloth layerPROTOTECH CO·Filed 1985·Granted Mar 3, 1987·49 cites·12 claims
- 0985US3992512AFinely particulated colloidal platinum compound and sol for producing the same, and method of preparationPROTOTECH CO·Filed 1974·Granted Nov 16, 1976·30 cites·6 claims
- 1083US4900712ACatalytic washcoat and method of preparation of the samePROTOTECH CO·Filed 1988·Granted Feb 13, 1990·48 cites·17 claims
- 1182US4082699AMethod of preparing catalytic structures from colloidal platinum compounds and such catalytic structuresPROTOTECH CO·Filed 1976·Granted Apr 4, 1978·30 cites·7 claims
- 1280US4399185ALow pressure-drop catalytic mat and method of preparing the samePROTOTECH CO·Filed 1981·Granted Aug 16, 1983·31 cites·21 claims
- 1371US5431887AFlame arresting and contaminant-adsorbing filter apparatus and method in the catalytic abatement of broiler emissionsPROTOTECH CO·Filed 1992·Granted Jul 11, 1995·24 cites·5 claims
- 1466US4059541APlatinum colloid sol and method of forming samePROTOTECH CO·Filed 1976·Granted Nov 22, 1977·16 cites·9 claims
- 1563US5693298AMethod for the catalytic abatement of broiler emissionsPROTOTECH CO·Filed 1996·Granted Dec 2, 1997·19 cites·3 claims
- 1658US4478696AIonizable reducing and oxidizing gaseous supply means and process for catalytic barriers and electrodesPROTOTECH CO·Filed 1982·Granted Oct 23, 1984·10 cites·11 claims
- 1754US5556819AMethod of making a flame arresting and contaminant-absorbing filter apparatusPROTOTECH CO·Filed 1995·Granted Sep 17, 1996·13 cites·4 claims
- 1854US3933684AMethod of forming palladium oxide and palladium particlesPROTOTECH CO·Filed 1973·Granted Jan 20, 1976·8 cites·4 claims
- 1950US4524094ASelf-supporting catalytic sleeve formed of interwoven loosely packed multi-fiber strands for receiving air-combustible gas mixtures for flameless catalytic combustion along the sleevePROTOTECH CO·Filed 1984·Granted Jun 18, 1985·6 cites·5 claims
- 2039US4412894AProcess for electrowinning of massive zinc with hydrogen anodesPROTOTECH CO·Filed 1981·Granted Nov 1, 1983·5 cites·4 claims
- 2132US4661425ALithium hydride anode for use in alkaline batteriesPROTOTECH CO·Filed 1984·Granted Apr 28, 1987·2 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →