Inventor · disambiguated record
Ferdinand Freudenstein
Also filed as: FREUDENSTEIN FERDINAND
7 granted patents·364 citations·filing 1979–1989
89Inventor score
Top patents by PatentIndex Score
7 records- 0195US4865577ANoncircular driveUNIV COLUMBIA·Filed 1988·Granted Sep 12, 1989·113 cites·29 claims
- 0293US4270495AVariable displacement piston engineGEN MOTORS CORP·Filed 1979·Granted Jun 2, 1981·102 cites·4 claims
- 0392US4917066ASwing beam internal-combustion enginesUNIV COLUMBIA·Filed 1989·Granted Apr 17, 1990·58 cites·12 claims
- 0475US4393820ARolling contact rocker arm and pivotGEN MOTORS CORP·Filed 1982·Granted Jul 19, 1983·28 cites·9 claims
- 0574US4418586ASwash plate drive mechanismGEN MOTORS CORP·Filed 1981·Granted Dec 6, 1983·28 cites·4 claims
- 0664US4332148ACyclic phase-change couplingGEN MOTORS CORP·Filed 1980·Granted Jun 1, 1982·21 cites·3 claims
- 0756US4821695ASwing beam internal combustion enginesUNIV COLUMBIA·Filed 1988·Granted Apr 18, 1989·14 cites·28 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →