Inventor · disambiguated record
Ralph M. Hoffmann
Also filed as: HOFFMANN RALPH · HOFFMANN RALPH M
15 granted patents·157 citations·filing 1979–2014
93Inventor score
Top patents by PatentIndex Score
15 records- 0189US4297090ARotary expansion power unit with valve disc connected to crankshaftTROCHOID POWER CORP·Filed 1979·Granted Oct 27, 1981·27 cites·13 claims
- 0271US4382755ADriveshaft arrangement for trochoidal rotary deviceTROCHOID POWER CORP·Filed 1981·Granted May 10, 1983·24 cites·5 claims
- 0365US4721445AOuter envelope trochoidal rotary device having a rotor assembly having peripheral reliefsCOMPRESSION TECH·Filed 1986·Granted Jan 26, 1988·23 cites·15 claims
- 0464US9306331B2Self-aligning connector for data and/or power transmissionAIRBUS OPERATIONS GMBH·Filed 2014·Granted Apr 5, 2016·5 cites·15 claims
- 0558US5046932ARotary epitrochoidal compressorCOMPRESSION TECH·Filed 1989·Granted Sep 10, 1991·15 cites·13 claims
- 0658US4728270AApparatus and method for replacing apex seals in a rotary deviceTROCHOID POWER CORP·Filed 1986·Granted Mar 1, 1988·17 cites·15 claims
- 0749US4895222AConstant level oilerFOXPORT INC·Filed 1989·Granted Jan 23, 1990·16 cites·7 claims
- 0848US9605472B2Connecting means comprising a hatch and a bellowsAIRBUS OPERATIONS GMBH·Filed 2014·Granted Mar 28, 2017·0 cites·13 claims
- 0938US4827983ASwiveling mount for the outlet of a pressure vesselCOMPRESSION TECH·Filed 1988·Granted May 9, 1989·7 cites·13 claims
- 1037US4400145ADriveshaft arrangement for a rotary expansible chamber deviceTROCHOID POWER CORP·Filed 1981·Granted Aug 23, 1983·6 cites·32 claims
- 1134US4551083ADual rotor gear assembly for trochoidal rotary deviceTROCHOID POWER CORP·Filed 1984·Granted Nov 5, 1985·4 cites·8 claims
- 1232US4911043AApparatus and method for milling a trochoidal rotorCOMPRESSION TECH·Filed 1989·Granted Mar 27, 1990·3 cites·18 claims
- 1330US4884661ACenter-fill top cover for oilersHOFFMANN RALPH M·Filed 1989·Granted Dec 5, 1989·5 cites·7 claims
- 1430US4778362AOuter envelope trochoidal rotary device having a two piece rotor assemblyCOMPRESSION TECH·Filed 1986·Granted Oct 18, 1988·3 cites·9 claims
- 1523US4735560ASeal assembly for a rotary deviceWYDRA LARRY·Filed 1987·Granted Apr 5, 1988·2 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →