Inventor
PETZOLDT KARL
33 patents
⚠️ This page may combine multiple inventors who share the name “PETZOLDT KARL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHERING AG
31 patentsUS4435327AMar 6, 1984
3β,7β,15α-Trihydroxy-5-androsten-17-one, its 3,15-dipivalate, and their preparation
SCHERING AG29 citations92
US4614616ASep 30, 1986
Process for preparing 3β7β-dihydroxy-Δ5 -steroids
SCHERING AG16 citations82
US4587236AMay 6, 1986
Novel 6α-methylprednisolone derivatives, their preparation, and their use
SCHERING AG22 citations82
US4416985ANov 22, 1983
Process for preparing 3β,7β-dihydroxy-Δ5 -steroids
SCHERING AG19 citations82
US4284720AAug 18, 1981
Process for the preparation of 19-hydroxy steroids of the androstane and pregnane series
SCHERING AG10 citations74
US4029779AJun 14, 1977
1α-Hydroxy steroids
SCHERING AG6 citations74
US5248609ASep 28, 1993
Racemic separation of 7α-acyloxy-6β-hydroxymethyl-2-oxabicyclo[3.]-octan-3-ones by stereospecific enzymatic acylate hydrolysis
SCHERING AG7 citations73
US4371529AFeb 1, 1983
11-Methylene-Δ15 -steroids, their preparation and use in pharmaceuticals
SCHERING AG6 citations73
US4196203AApr 1, 1980
Novel corticoids
SCHERING AG8 citations73
US4196204AApr 1, 1980
Hydroxylated 1 alpha, 2 alpha-methylene steroids
SCHERING AG6 citations73
US4045574AAug 30, 1977
D-homo-20-ketopregnanes
SCHERING AG7 citations73
US4011314AMar 8, 1977
7-hydroxyestradiols
SCHERING AG10 citations72
US3935245AJan 27, 1976
Radioactively labeled steroid derivatives
SCHERING AG14 citations70
US5539111AJul 23, 1996
Process for resolution of racemates of 4-aryl-2-oxo-pyrrolidine-3-carboxylic acid esters
SCHERING AG16 citations69
US4912098AMar 27, 1990
Antiinflammatory 6 alpha-methylhydrocortisones
SCHERING AG3 citations63
US4696948ASep 29, 1987
Indanyl derivatives and process for their preparation
SCHERING AG3 citations63
US4353985AOct 12, 1982
Process for the preparation of 11 β-hydroxy steroids
SCHERING AG6 citations63
US4330541AMay 18, 1982
Novel corticoid 17-thioacetals, their preparation and use
SCHERING AG3 citations63
US4144334AMar 13, 1979
Novel α-hydroxy steroids
SCHERING AG4 citations63
US4036695AJul 19, 1977
Process for the preparation of estrene-3,17-dione derivatives
SCHERING AG6 citations63
US4337311AJun 29, 1982
15 Hydroxylation of 1α,2α-methylene steroids
SCHERING AG3 citations62
US5403724AApr 4, 1995
Microbiological reduction of prostacyclin intermediate products with a 15-keto group
SCHERING AG0 citations52
US5275936AJan 4, 1994
Process for the preparation of 1-methyl-1,4-androstadiene-3,17-dione
SCHERING AG1 citations52
US5250712AOct 5, 1993
1β,15α-dihydroxy-1α-methyl-5α-androstane-3,17-dione, its production and use
SCHERING AG0 citations52
US5093250AMar 3, 1992
Process for producing optically active bicyclo[3.3.0]octanedione carboxylic acid esters
SCHERING AG0 citations52
US4894336AJan 16, 1990
Racemic dissociation of 3-acyloxy bicyclo(3.3.0)octan-7-one-2-carboxylic acid esters by stereospecific enzymatic or microbiological acylate hydrolysis
SCHERING AG1 citations52
US4603013AJul 29, 1986
Estrane derivatives
SCHERING AG1 citations52
US4307088ADec 22, 1981
1-Hydroxy steroids, a process for the production thereof, and pharmaceutical preparations containing them
SCHERING AG0 citations52
US4124708ANov 7, 1978
Novel agents and novel methods for inducing abortions
SCHERING AG1 citations52
US5102793AApr 7, 1992
Stereospecific keto reduction of bicyclooctandione-carboxylic acid esters by microorganisms
SCHERING AG1 citations51
US4464365AAug 7, 1984
11β-Chloro-Δ15 -steroids, a process for their preparation and pharmaceutical preparations containing them
SCHERING AG1 citations49