Assignee
KEMPTEN ELEKTROSCHMELZ GMBH
DE·52 granted patents·1,199 citations·filing 1974–2001
Top patents by PatentIndex Score
52 records- 0192US4885264APressure-sintered polycpystalline mixed materials with a base of hexagonal boron nitride, oxides and carbidesKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1989·Granted Dec 5, 1989·32 cites·6 claims
- 0291US4524138ASubstantially pore-free sintered polycrystalline articles of α-silicon carbide, boron carbide and free carbon and process for their manufactureKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1983·Granted Jun 18, 1985·75 cites·10 claims
- 0390US6347905B1Connecting element for the frictional connection of componentsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1999·Granted Feb 19, 2002·89 cites·13 claims
- 0490US4230497ADense sintered shaped articles of polycrystalline α-silicon carbide and process for their manufactureKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1979·Granted Oct 28, 1980·47 cites·23 claims
- 0590US3953487AProcess for preparing hydrophobic silicon dioxideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1974·Granted Apr 27, 1976·39 cites·5 claims
- 0689US4107276AManufacture of hexagonal boron nitrideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1977·Granted Aug 15, 1978·39 cites·15 claims
- 0787US5543370AComposite materials based on boron carbide, titanium diboride and elemental carbon and processes for the preparation of sameKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1994·Granted Aug 6, 1996·46 cites·12 claims
- 0887US4195066AProcess for the production of dense sintered shaped articles of polycrystalline boron carbide by pressureless sinteringKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1978·Granted Mar 25, 1980·45 cites·31 claims
- 0985US4803183ADense molded bodies of polycrystalline aluminum nitride and process for preparation without use of sintering aidsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1987·Granted Feb 7, 1989·38 cites·2 claims
- 1084US5505899AProcess for producing bodies based on boron carbide by pressureless sinteringKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1994·Granted Apr 9, 1996·41 cites·4 claims
- 1183US4495123ADense shaped articles consisting of polycrystalline hexagonal boron nitride and process for their manufacture by isostatic hot pressingKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1982·Granted Jan 22, 1985·31 cites·5 claims
- 1282US5045512AMixed sintered metal materials based on borides, nitrides and iron binder metalsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1990·Granted Sep 3, 1991·35 cites·15 claims
- 1382US4634640ADense shaped articles consisting of polycrystalline hexagonal boron nitride and process for their manufacture by isostatic hot-pressingKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1984·Granted Jan 6, 1987·28 cites·2 claims
- 1480US4381931AProcess for the manufacture of substantially pore-free shaped polycrystalline articles by isostatic hot-pressing in glass casingsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1981·Granted May 3, 1983·31 cites·8 claims
- 1579US4915589ARunner with mechanical couplingKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1989·Granted Apr 10, 1990·63 cites·4 claims
- 1678US3936327ABoriding compositionKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1974·Granted Feb 3, 1976·22 cites·7 claims
- 1774US5762895ABearing material of porous SIC having a trimodal pore compositionKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1996·Granted Jun 9, 1998·33 cites·9 claims
- 1874US4748313AApparatus by the continuous vaporization of inorganic compositions by means of a photon-generating thermal source of radiation heatKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1986·Granted May 31, 1988·37 cites·8 claims
- 1974US4637837AProcess for boriding metals and metal alloys by means of solid boriding agentsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1985·Granted Jan 20, 1987·42 cites·8 claims
- 2072US4252691ANeutron absorber based on boron carbide and carbon and a process for their productionKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1978·Granted Feb 24, 1981·20 cites·11 claims
- 2170US4528120ARefractory, electrically conductive, mixed materials containing boron nitride and process for their manufactureKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1984·Granted Jul 9, 1985·22 cites·10 claims
- 2270US4351858AProcess for the manufacture of substantially pore-free shaped polycrystalline articles by isostatic hot-pressingKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1981·Granted Sep 28, 1982·24 cites·12 claims
- 2367US4687655AProcess for the manufacture of shaped articles from reaction-bonded silicon nitride by nitridation under elevated nitrogen gas pressureKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1986·Granted Aug 18, 1987·21 cites·10 claims
- 2466US4560668ASubstantially pore-free shaped articles of polycrystalline silicon carbide, and a process for their manufacture by isostatic hot-pressingKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1984·Granted Dec 24, 1985·19 cites·13 claims
- 2565US4467043ADense shaped articles of polycrystalline α-silicon carbide and process for the manufacture thereof by hot-pressingKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1983·Granted Aug 21, 1984·20 cites·15 claims
- 2660US3950602AFurnace installation operated by direct electrical heating according to the resistance principle in particular for preparation of silicon carbideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1974·Granted Apr 13, 1976·13 cites·27 claims
- 2757US4715812AKiln furnitureKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1986·Granted Dec 29, 1987·20 cites·8 claims
- 2856US6085025AElliptical ceramic evaporatorsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1999·Granted Jul 4, 2000·17 cites·3 claims
- 2956US4118256AProcess for the production of oxygen-free copper casting and moldingsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1976·Granted Oct 3, 1978·8 cites·5 claims
- 3054US6475565B1Process for producing a clothing wire for open-end spinningKEMPTEN ELEKTROSCHMELZ GMBH·Filed 2000·Granted Nov 5, 2002·3 cites·24 claims
- 3154US6466738B2Material for aging-resistant ceramic vaporizersKEMPTEN ELEKTROSCHMELZ GMBH·Filed 2001·Granted Oct 15, 2002·4 cites·10 claims
- 3254US4814301APolycrystalline sintered articles based on silicon nitride and sintering additivesKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1987·Granted Mar 21, 1989·14 cites·11 claims
- 3354US4756482AProcess for the manufacture of sinterable silicon carbide and/or boron carbide powdersKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1987·Granted Jul 12, 1988·14 cites·10 claims
- 3453US4732620AThermoelement comprising a graphite/boron carbide thermocoupleKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1986·Granted Mar 22, 1988·15 cites·11 claims
- 3553US3989883AFurnace installation operated by direct electrical heating according to the resistance principle, in particular for the preparation of silicon carbideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1974·Granted Nov 2, 1976·10 cites·2 claims
- 3653US3976829ACollector apparatus for gaseous reaction productsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1974·Granted Aug 24, 1976·12 cites·16 claims
- 3751US4564601AShaped polycrystalline silicon carbide articles and isostatic hot-pressing processKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1984·Granted Jan 14, 1986·11 cites·5 claims
- 3849US4743571APolycrystalline sintered bodies on a base of silicon nitride with high fracture toughness and hardnessKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1987·Granted May 10, 1988·12 cites·10 claims
- 3947US4326039ADense shaped articles of polycrystalline β-silicon carbide and process for the manufacture thereof by hot-pressingKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1980·Granted Apr 20, 1982·10 cites·1 claims
- 4046US4684480ACeramic bonded neutron absorber plates of boron carbide and free carbonKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1984·Granted Aug 4, 1987·10 cites·2 claims
- 4146US4661740APolycrystalline sintered bodies based on lanthanum hexaboride, and a process for their manufactureKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1986·Granted Apr 28, 1987·11 cites·12 claims
- 4245US5547709ASurface treatment of opening rollers for open end spinningKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1994·Granted Aug 20, 1996·9 cites·11 claims
- 4342US6081652ACeramic flash TV evaporatorKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1998·Granted Jun 27, 2000·9 cites·5 claims
- 4442US6010010AProcess for reclaiming a grinding suspensionKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1998·Granted Jan 4, 2000·15 cites·8 claims
- 4542US5266263AReprocessing of used evaporation boatsKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1992·Granted Nov 30, 1993·7 cites·10 claims
- 4640US5939185ABearing material of silicon carbideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1997·Granted Aug 17, 1999·9 cites·16 claims
- 4738US4814302AStable slip-casting compositions having a base of powders containing finely divided aluminum nitrideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1986·Granted Mar 21, 1989·9 cites·7 claims
- 4837US5372979AComposite materials based on titanium diborideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1993·Granted Dec 13, 1994·6 cites·4 claims
- 4935US4158744AElectrical resistance furnace for the production of silicon carbideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1977·Granted Jun 19, 1979·5 cites·13 claims
- 5027US4970036AProcess for producing green compacts by molding sinterable ceramic mixtures based on silicon nitrideKEMPTEN ELEKTROSCHMELZ GMBH·Filed 1989·Granted Nov 13, 1990·1 cites·7 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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