Inventor · disambiguated record
Friedrich Esper
Also filed as: ESPER FRIEDRICH · ESPER FRIEDRICH J
18 granted patents·465 citations·filing 1974–1988
95Inventor score
Top patents by PatentIndex Score
18 records- 0189US4221650ASolid electrolyte oxygen sensorsBOSCH GMBH ROBERT·Filed 1978·Granted Sep 9, 1980·45 cites·11 claims
- 0287US4418661AGlow plug, particularly for diesel engineBOSCH GMBH ROBERT·Filed 1981·Granted Dec 6, 1983·42 cites·23 claims
- 0387US4320080AMethod to manufacture soft magnetic pressed bodiesBOSCH GMBH ROBERT·Filed 1980·Granted Mar 16, 1982·31 cites·16 claims
- 0486US4334974AElectrochemical oxygen sensor, particularly for use with exhaust gases of internal combustion engines, and especially for polarographic applicationBOSCH GMBH ROBERT·Filed 1980·Granted Jun 15, 1982·55 cites·14 claims
- 0581US4019914AMethod of manufacturing α-aluminaBOSCH GMBH ROBERT·Filed 1974·Granted Apr 26, 1977·38 cites·9 claims
- 0676US4339320AHeated gas composition sensor structureBOSCH GMBH ROBERT·Filed 1980·Granted Jul 13, 1982·30 cites·11 claims
- 0769US4539503ARapid-heating, high-temperature-stable spark plug for internal combustion enginesBOSCH GMBH ROBERT·Filed 1982·Granted Sep 3, 1985·24 cites·20 claims
- 0868US5194099ASinter magnet based on fe-nd-bMAX PLANCK GESELLSCHAFT·Filed 1988·Granted Mar 16, 1993·22 cites·8 claims
- 0964US4183798AStabilized zirconium dioxide compositions and oxygen sensors utilizing said compositionsBOSCH GMBH ROBERT·Filed 1978·Granted Jan 15, 1980·16 cites·4 claims
- 1063US4535487AEndoprosthesis shaftBOSCH GMBH ROBERT·Filed 1984·Granted Aug 20, 1985·58 cites·12 claims
- 1160US4128420AHigh-strength iron-molybdenum-nickel-phosphorus containing sintered alloyBOSCH GMBH ROBERT·Filed 1977·Granted Dec 5, 1978·11 cites·4 claims
- 1253US4268468AMethod of making a medical prosthesisBOSCH GMBH ROBERT·Filed 1978·Granted May 19, 1981·31 cites·10 claims
- 1349US3959002AMethod of manufacturing white furnace boats for firing ceramic articles and novel furnace boatsBOSCH GMBH ROBERT·Filed 1974·Granted May 25, 1976·9 cites·9 claims
- 1448US4532492ATemperature-compensated, oxygen-content gas sensorBOSCH GMBH ROBERT·Filed 1984·Granted Jul 30, 1985·11 cites·9 claims
- 1546US4618351ADevice for cleaning of gasesBOSCH GMBH ROBERT·Filed 1984·Granted Oct 21, 1986·9 cites·13 claims
- 1644US4503348AMagnetic transducerBOSCH GMBH ROBERT·Filed 1979·Granted Mar 5, 1985·8 cites·2 claims
- 1744US4356571AProsthetic deviceBOSCH GMBH ROBERT·Filed 1980·Granted Nov 2, 1982·25 cites·9 claims
- 1829US4533392AHigh strength sintered alloyBOSCH GMBH ROBERT·Filed 1978·Granted Aug 6, 1985·0 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →