Inventor · disambiguated record
Karl-Heinz Hardtl
Also filed as: HAERDTL KARL H · HAERDTL KARL-HEINZ · HARDTL KARL-HEINZ
8 granted patents·63 citations·filing 1975–2000
86Inventor score
Files withPHILIPS CORP2DAIMLER CHRYSLER AG1HERAEUS ELECTRO NITE INT1KERNFORSCHUNGSZ KARLSRUHE1ROTH TECHNIK GMBH1
Top patents by PatentIndex Score
8 records- 0162US6319429B1Oxygen sensitive resistance materialDAIMLER CHRYSLER AG·Filed 2000·Granted Nov 20, 2001·12 cites·44 claims
- 0262US3990770AElectro-optic picture display and memory devicePHILIPS CORP·Filed 1975·Granted Nov 9, 1976·12 cites·5 claims
- 0347US5972296AOxygen sensors made of alkaline-earth-doped lanthanum ferrites and method of use thereofHERAEUS ELECTRO NITE INT·Filed 1998·Granted Oct 26, 1999·12 cites·11 claims
- 0444US5843858AOxygen sensors made of alkaline-earth-doped lanthanum ferritesROTH TECHNIK GMBH·Filed 1995·Granted Dec 1, 1998·11 cites·1 claims
- 0539US4988970ASemiconductor for a resistive gas sensor having a high response speedKERNFORSCHUNGSZ KARLSRUHE·Filed 1989·Granted Jan 29, 1991·7 cites·8 claims
- 0636US4474894ADielectric on the basis of lead titanates, method of manufacturing same, and a multilayer capacitor comprising the dielectricPHILIPS CORP·Filed 1983·Granted Oct 2, 1984·5 cites·12 claims
- 0726US5279855AManufacture of inert, catalytic or gas-sensitive ceramic layers for gas sensorsROTH TECKNIK GMBH & CO FORSCHU·Filed 1988·Granted Jan 18, 1994·3 cites·8 claims
- 0820US5792666AOxygen sensor based on non-doped cuprateFiled 1994·Granted Aug 11, 1998·1 cites·11 claims
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