Inventor · disambiguated record
Johannes E. Schmidt
Also filed as: KIEFER HANS · SCHMIDT JOHANNES E
9 granted patents·147 citations·filing 1976–1991
89Inventor score
Files withBASF AG9
Top patents by PatentIndex Score
9 records- 0191US4218568APreparation of formic acidBASF AG·Filed 1978·Granted Aug 19, 1980·27 cites·2 claims
- 0289US4217460AIsolation of formic acid from its aqueous solutionsBASF AG·Filed 1978·Granted Aug 12, 1980·22 cites·6 claims
- 0388US5206433APreparation of formic acidBASF AG·Filed 1985·Granted Apr 27, 1993·26 cites·10 claims
- 0478US4568427AContinuous isolation of phthalic anhydride and maleic anhydride from reaction gasesBASF AG·Filed 1983·Granted Feb 4, 1986·15 cites·5 claims
- 0576US4076594APurification of formic acid by extractive distillationBASF AG·Filed 1976·Granted Feb 28, 1978·14 cites·4 claims
- 0670US5225574APreparation of phthalic anhydride from o-xyleneBASF AG·Filed 1991·Granted Jul 6, 1993·30 cites·3 claims
- 0747US4921977AObtaining maleic anhydride not prone to discolorBASF AG·Filed 1989·Granted May 1, 1990·4 cites·3 claims
- 0844US4369327APreparation of phthalic anhydrideBASF AG·Filed 1981·Granted Jan 18, 1983·3 cites·6 claims
- 0935US4961827AObtaining very pure maleic anhydride from crude maleic anhydrideBASF AG·Filed 1986·Granted Oct 9, 1990·6 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →