William C. Ripka

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Wilmington, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Substituted acenaphthenes and their use as inhibitors of phospholip...
- Patent number 4,859,697
- Issue date Aug 22, 1989
- E. I. Du Pont de Nemours and Company
- William C. Ripka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Substituted acenaphthenes and their use as inhibitors of phospholip...
- Patent number 4,806,671
- Issue date Feb 21, 1989
- E. I. Du Pont de Nemours and Company
- William C. Ripka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4a-Aryl-trans-decahydroisoquinolines
- Patent number 4,419,517
- Issue date Dec 6, 1983
- E. I. Du Pont de Nemours & Co.
- David R. Brittelli
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Substituted 4a-phenyl-N-phenylalkyl-cis-decahydroisoquinolines
- Patent number 4,150,135
- Issue date Apr 17, 1979
- E. I. Du Pont de Nemours and Company
- William C. Ripka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
N-(p-methylphenethyl)-4a-aryl-trans-decahydroisoquinolines
- Patent number 4,077,954
- Issue date Mar 7, 1978
- E. I. Du Pont de Nemours and Company
- William Charles Ripka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3.alpha.-Arylhydroisoindoles
- Patent number 4,042,707
- Issue date Aug 16, 1977
- E. I. Du Pont de Nemours and Company
- William Charles Ripka
- C07 - ORGANIC CHEMISTRY