Inventor · disambiguated record
Helmut Dahl
Also filed as: DAHL HELMUT · KENNECKE MARIO · WEBER ALFRED
15 granted patents·131 citations·filing 1975–1999
91Inventor score
Files withSCHERING AG15
Top patents by PatentIndex Score
15 records- 0193US4179336AMicrobiological degradation of sterol side chains to a 17-keto groupSCHERING AG·Filed 1977·Granted Dec 18, 1979·41 cites·10 claims
- 0285US4886788ACyclodextrin clathrates of carbacyclin derivatives and their use as medicinal agentsSCHERING AG·Filed 1987·Granted Dec 12, 1989·40 cites·22 claims
- 0369US4224320ANovel steroids of the pregnane series, substituted in the 17-position, their manufacture and their useSCHERING AG·Filed 1979·Granted Sep 23, 1980·8 cites·27 claims
- 0457US4894391ANovel prostacyclin derivatives, process for the preparation thereof, and use thereof as medicinal agentsSCHERING AG·Filed 1984·Granted Jan 16, 1990·6 cites·21 claims
- 0555US5248609ARacemic separation of 7α-acyloxy-6β-hydroxymethyl-2-oxabicyclo[3.]-octan-3-ones by stereospecific enzymatic acylate hydrolysisSCHERING AG·Filed 1987·Granted Sep 28, 1993·7 cites·11 claims
- 0650US5010065ACyclodextrin clathrates of 5-cyanoprostacyclin derivatives and their use as pharmaceutical agentsSCHERING AG·Filed 1988·Granted Apr 23, 1991·14 cites·10 claims
- 0745US4925956ANovel process for manufacturing optically active carbacyclin intermediatesSCHERING AG·Filed 1987·Granted May 15, 1990·2 cites·7 claims
- 0843US4207316ANovel 17-substituted 11 β-hydroxy steroids of the pregnane series, their manufacture, preparation and useSCHERING AG·Filed 1979·Granted Jun 10, 1980·7 cites·79 claims
- 0940US5102793AStereospecific keto reduction of bicyclooctandione-carboxylic acid esters by microorganismsSCHERING AG·Filed 1987·Granted Apr 7, 1992·1 cites·3 claims
- 1034US5200530AKeto reduction of carbacyclin intermediatesSCHERING AG·Filed 1987·Granted Apr 6, 1993·2 cites·9 claims
- 1132US4894336ARacemic dissociation of 3-acyloxy bicyclo(3.3.0)octan-7-one-2-carboxylic acid esters by stereospecific enzymatic or microbiological acylate hydrolysisSCHERING AG·Filed 1987·Granted Jan 16, 1990·1 cites·10 claims
- 1231US5403724AMicrobiological reduction of prostacyclin intermediate products with a 15-keto groupSCHERING AG·Filed 1994·Granted Apr 4, 1995·0 cites·2 claims
- 1330US4052447AProcess for the preparation of bicycloalkane derivativesSCHERING AG·Filed 1975·Granted Oct 4, 1977·0 cites·6 claims
- 1429US4247635AMicrobiological reduction of 15-ketoprostaglandin intermediatesSCHERING AG·Filed 1979·Granted Jan 27, 1981·2 cites·7 claims
- 1524US6512139B1Oxidation inhibitors in prostane derivativesSCHERING AG·Filed 1999·Granted Jan 28, 2003·0 cites·29 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →