Inventor · disambiguated record
Herbert Ampferer
Also filed as: AMPFERER HERBERT
30 granted patents·655 citations·filing 1982–1996
98Inventor score
Files withPORSCHE AG30
Top patents by PatentIndex Score
30 records- 0185US5063895AOil pump drive arrangement for a piston internal-combustion engine and method of making samePORSCHE AG·Filed 1990·Granted Nov 12, 1991·43 cites·18 claims
- 0284US4938314APlastic oil panPORSCHE AG·Filed 1989·Granted Jul 3, 1990·44 cites·9 claims
- 0381US5138985AArrangement for changing the valve timing of an internal-combustion enginePORSCHE AG·Filed 1991·Granted Aug 18, 1992·38 cites·16 claims
- 0480US5080057ACylinder head of an internal-combustion enginePORSCHE AG·Filed 1990·Granted Jan 14, 1992·34 cites·20 claims
- 0580US4493295AInternal combustion engine, especially for motor vehiclesPORSCHE AG·Filed 1983·Granted Jan 15, 1985·31 cites·21 claims
- 0678US5136993AInternal-combustion engine oil guiding housingPORSCHE AG·Filed 1991·Granted Aug 11, 1992·38 cites·16 claims
- 0776US4693216ACrankshaft bearings for internal-combustion enginesPORSCHE AG·Filed 1985·Granted Sep 15, 1987·38 cites·15 claims
- 0874US5678884AAir guide device with air intake openingsPORSCHE AG·Filed 1995·Granted Oct 21, 1997·37 cites·19 claims
- 0972US5014655ACamshaft drive of a multi-cylinder V-enginePORSCHE AG·Filed 1990·Granted May 14, 1991·26 cites·6 claims
- 1072US4823748AActuating arrangementPORSCHE AG·Filed 1987·Granted Apr 25, 1989·21 cites·12 claims
- 1171US4805566AArrangement for influencing the control times of valvesPORSCHE AG·Filed 1987·Granted Feb 21, 1989·21 cites·9 claims
- 1270US4898125ACylinder head cover with suction pipe arrangement for an internal combustion enginePORSCHE AG·Filed 1988·Granted Feb 6, 1990·21 cites·15 claims
- 1367US4883031AInternal combustion enginePORSCHE AG·Filed 1988·Granted Nov 28, 1989·22 cites·25 claims
- 1467US4709670AFastening arrangement of a cover hood at a cylinder headPORSCHE AG·Filed 1986·Granted Dec 1, 1987·22 cites·18 claims
- 1566US5273007AArrangement for distributing oil in a camshaftPORSCHE AG·Filed 1991·Granted Dec 28, 1993·23 cites·3 claims
- 1666US4657043AOil pressure regulating valvePORSCHE AG·Filed 1985·Granted Apr 14, 1987·22 cites·10 claims
- 1764US4974569ACylinder block and crankcasePORSCHE AG·Filed 1990·Granted Dec 4, 1990·20 cites·20 claims
- 1864US4759317AMulti-cylinder internal combustion enginePORSCHE AG·Filed 1987·Granted Jul 26, 1988·20 cites·21 claims
- 1960US4510898AReciprocating piston internal combustion engine, preferably of four-cylinder constructionPORSCHE AG·Filed 1982·Granted Apr 16, 1985·14 cites·5 claims
- 2059US4903644AAir intake section of an internal combustion enginePORSCHE AG·Filed 1989·Granted Feb 27, 1990·13 cites·8 claims
- 2154US4829942AIntake system for a multi-cylinder internal-combustion enginePORSCHE AG·Filed 1987·Granted May 16, 1989·11 cites·25 claims
- 2253US5711614ACrankshaft bearing of a multicylinder internal combustion enginePORSCHE AG·Filed 1996·Granted Jan 27, 1998·16 cites·28 claims
- 2353US4559783ATurbocharged internal combustion engine with adjustable length pipe sectionsPORSCHE AG·Filed 1983·Granted Dec 24, 1985·17 cites·13 claims
- 2448US5220889AIntake system for a multi-cylinder internal-combustion enginePORSCHE AG·Filed 1992·Granted Jun 22, 1993·12 cites·18 claims
- 2545US4828536AChain tensionerPORSCHE AG·Filed 1988·Granted May 9, 1989·9 cites·16 claims
- 2644US4785772ACrankshaft of a ferro-metallic material for reciprocating piston internal combustion enginesPORSCHE AG·Filed 1987·Granted Nov 22, 1988·11 cites·13 claims
- 2741US5094072AExhaust system of a reciprocating piston enginePORSCHE AG·Filed 1990·Granted Mar 10, 1992·14 cites·19 claims
- 2839US4716638AMethod for aligning bearing covers at bearing sections of a crankcasePORSCHE AG·Filed 1986·Granted Jan 5, 1988·6 cites·3 claims
- 2936US5161643ADelay part for lubricating oilPORSCHE AG·Filed 1991·Granted Nov 10, 1992·6 cites·7 claims
- 3029US5148719ATorsional-vibration damperPORSCHE AG·Filed 1989·Granted Sep 22, 1992·5 cites·12 claims
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