Inventor · disambiguated record
Josef Speiser
Also filed as: SPEISER JOSEF
4 granted patents·22 citations·filing 1988–1993
72Inventor score
Files withWANKEL GMBH4
Top patents by PatentIndex Score
4 records- 0139US4940400ALubrication system for a rotary-piston internal combustion engineWANKEL GMBH·Filed 1989·Granted Jul 10, 1990·8 cites·10 claims
- 0232US4842494ARefrigerator compressor/internal combustion engine unit of the rotary piston typeWANKEL GMBH·Filed 1988·Granted Jun 27, 1989·7 cites·4 claims
- 0329US5452996APosition-independent rotary piston internal combustion engineWANKEL GMBH·Filed 1993·Granted Sep 26, 1995·3 cites·9 claims
- 0428US5011387ARotary piston internal combustion engineWANKEL GMBH·Filed 1989·Granted Apr 30, 1991·4 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →