Takeaki Umemura

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Takarazuka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for optical resolution of phenylacetic acid derivative
- Patent number 4,752,417
- Issue date Jun 21, 1988
- Sumitomo Chemical Company, Limited
- Ayumu Inoue
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing optically active cyclopentenolones
- Patent number 4,571,436
- Issue date Feb 18, 1986
- Sumitomo Chemical Company, Limited
- Takeaki Umemura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of optically active cyclopentenolones
- Patent number 4,552,703
- Issue date Nov 12, 1985
- Sumitomo Chemical Company, Limited
- Takeaki Umemura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for preparing 4-substituted-N-methylbenzothiazolone derivatives
- Patent number 4,293,702
- Issue date Oct 6, 1981
- Sumitomo Chemical Company, Limited
- Takeaki Umemura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing a 3-methyl-2-(4-halophenyl)butyronitrile
- Patent number 4,144,264
- Issue date Mar 13, 1979
- Sumitomo Chemical Company, Limited
- Fujio Masuko
- C07 - ORGANIC CHEMISTRY