Tamas Szen

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Patents Grantslast 30 patents

Information Patent Grant
Steroselective hydrogenation process
- Patent number 5,097,031
- Issue date Mar 17, 1992
- Richter Gedeon Vegyeszeti Gyar Rt.
- Istvan Polgar
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 17.alpha.-hydroxy-pregn-4-en-3,20-dione
- Patent number 4,482,494
- Issue date Nov 13, 1984
- Richter Gedeon Vegyeszeti Gyar Rt.
- Anna Boor
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 17.alpha.-hydroxy-pregn-4-en-3,20-dione deriv...
- Patent number 4,368,160
- Issue date Jan 11, 1983
- Richter Gedeon Vegyeszeti Gyar Rt.
- Anna Boor nee Mezei
- C07 - ORGANIC CHEMISTRY