Inventor · disambiguated record
Klaus Annen
Also filed as: ANNEN KLAUS · ANNEN KLAUS DR · WEBER ALFRED
37 granted patents·1 pending application·415 citations·filing 1975–2008
98Inventor score
Top patents by PatentIndex Score
38 records- 0195US4609651A11β-arylestradienes, their production, and pharmaceutical preparations containing sameSCHERING AG·Filed 1984·Granted Sep 2, 1986·67 cites·6 claims
- 0291US4645763A6α-methyl corticoids, their production and useSCHERING AG·Filed 1983·Granted Feb 24, 1987·38 cites·16 claims
- 0389US4081537AΔ15 -Steroids and pharmaceutical compositions thereofSCHERING AG·Filed 1976·Granted Mar 28, 1978·24 cites·8 claims
- 0485US4670427A1α,2α-methylene-6-methylene- and 6α-methylpregnenes, their preparation and pharmaceutical useSCHERING AG·Filed 1985·Granted Jun 2, 1987·33 cites·10 claims
- 0585US4555507ANovel 6, 16-dimethylcorticoids, their preparation and useSCHERING AG·Filed 1983·Granted Nov 26, 1985·23 cites·16 claims
- 0684US4587236ANovel 6α-methylprednisolone derivatives, their preparation, and their useSCHERING AG·Filed 1983·Granted May 6, 1986·22 cites·14 claims
- 0784US4536401A11β-aryl estradienes, processes for their production and pharmaceutical preparations containing themSCHERING AG·Filed 1984·Granted Aug 20, 1985·29 cites·26 claims
- 0882US3966713A11β-FLUOROANDROSTENESSCHERING AG·Filed 1975·Granted Jun 29, 1976·15 cites·38 claims
- 0981US4404141AΔ9(11) - And Δ16 -21-chloro-20-keto steroids of the pregnane and D-homopregnane series, their preparation and use as intermediates for the synthesis of highly effective corticoidsSCHERING AG·Filed 1982·Granted Sep 13, 1983·23 cites·14 claims
- 1076US4701451ANovel 6,16-dimethylcorticoids their preparation and useSCHERING AG·Filed 1985·Granted Oct 20, 1987·18 cites·7 claims
- 1173US4777165A6α, 16β-dimethyl corticoids and their anti-inflammatory useSCHERING AG·Filed 1987·Granted Oct 11, 1988·17 cites·7 claims
- 1270US4016269A17α-HYDROXY-1,3,5(10),15-ESTRATETRAENES AND PROCESS FOR THEIR PRODUCTIONSCHERING AG·Filed 1975·Granted Apr 5, 1977·7 cites·15 claims
- 1367US4432976ACyclocarbonate esters of 16α,17α, dihydroxy anti-inflammatory steroidsSCHERING AG·Filed 1982·Granted Feb 21, 1984·9 cites·14 claims
- 1466US4102908AProcess for the preparation of pregnane derivativesSCHERING AG·Filed 1977·Granted Jul 25, 1978·6 cites·8 claims
- 1563US4322349AProcess for preparing 6-methylene steroidsSCHERING AG·Filed 1981·Granted Mar 30, 1982·11 cites·13 claims
- 1662US4891365A17-Substituted estradienes and estratrienesSCHERING AG·Filed 1987·Granted Jan 2, 1990·12 cites·27 claims
- 1760US4435390AHydrocortisone derivatives, the preparation and use thereofSCHERING AG·Filed 1982·Granted Mar 6, 1984·6 cites·27 claims
- 1857US4176126ANovel corticoidsSCHERING AG·Filed 1977·Granted Nov 27, 1979·4 cites·15 claims
- 1952US4371529A11-Methylene-Δ15 -steroids, their preparation and use in pharmaceuticalsSCHERING AG·Filed 1981·Granted Feb 1, 1983·6 cites·14 claims
- 2051US2009012321A1Process for preparing 17alpha-acetoxy-6-methylenepregn-4-ene-3,20-dione, medroxyprogesterone acetate and megestrol acetateANNEN KLAUS·Filed 2008·Application pending·0 cites
- 2149US4353985AProcess for the preparation of 11 β-hydroxy steroidsSCHERING AG·Filed 1980·Granted Oct 12, 1982·6 cites·7 claims
- 2248US4330541ANovel corticoid 17-thioacetals, their preparation and useSCHERING AG·Filed 1981·Granted May 18, 1982·3 cites·15 claims
- 2348US4277468A11-Methylene steroids, their preparation and pharmaceutical preparations containing themSCHERING AG·Filed 1980·Granted Jul 7, 1981·3 cites·10 claims
- 2447US4619922A6α, 16α-dimethyl corticoidsSCHERING AG·Filed 1985·Granted Oct 28, 1986·4 cites·11 claims
- 2546US4912098AAntiinflammatory 6 alpha-methylhydrocortisonesSCHERING AG·Filed 1987·Granted Mar 27, 1990·3 cites·5 claims
- 2646US4243664ANovel corticoidsSCHERING AG·Filed 1979·Granted Jan 6, 1981·2 cites·5 claims
- 2743US4207316ANovel 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
- 2842US4956482AProcess for the preparation of pregnane derivativesSCHERING AG·Filed 1989·Granted Sep 11, 1990·3 cites·10 claims
- 2940US4945064AEstrane and androstane derivatives, process for producing them and preparations containing these compoundsSCHERING AG·Filed 1988·Granted Jul 31, 1990·4 cites·38 claims
- 3040US4049804ANovel pregnanoic acid derivativesSCHERING AG·Filed 1976·Granted Sep 20, 1977·1 cites·81 claims
- 3138US4567002AProcess for the preparation of 17-haloethynyl steroids, and novel 17-haloethynyl steroidsSCHERING AG·Filed 1984·Granted Jan 28, 1986·2 cites·11 claims
- 3236US4550100AProcess for the preparation of 17α-bromoethynyl- and 17α-iodoethynyl-17β-hydroxy steroids and novel products thereofSCHERING AG·Filed 1983·Granted Oct 29, 1985·3 cites·26 claims
- 3335US4440684AProcess for the preparation of 6-methyl-Δ4,6 -3-keto steroidsSCHERING AG·Filed 1983·Granted Apr 3, 1984·1 cites·23 claims
- 3435US4390530A3-Deoxy-Δ15 -steroidsSCHERING AG·Filed 1981·Granted Jun 28, 1983·1 cites·12 claims
- 3534US4708823A17 α-chloroethynyl pregnane derivativesSCHERING AG·Filed 1985·Granted Nov 24, 1987·1 cites·9 claims
- 3634US4073900A11β-FLUOROPREGNENESSCHERING AG·Filed 1976·Granted Feb 14, 1978·0 cites·14 claims
- 3733US4464365A11β-Chloro-Δ15 -steroids, a process for their preparation and pharmaceutical preparations containing themSCHERING AG·Filed 1983·Granted Aug 7, 1984·1 cites·19 claims
- 3828US4008312APregnane-21-oic acid derivativesSCHERING AG·Filed 1975·Granted Feb 15, 1977·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →