Shigenari Katayama

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Takarazauka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing 2(1H)-quinazolinone derivatives
- Patent number 4,387,223
- Issue date Jun 7, 1983
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 3,4-dihydro-2(1H)-quinazolinone derivatives
- Patent number 4,202,974
- Issue date May 13, 1980
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
.gamma.-Piperidinobutyrophenones
- Patent number 4,148,796
- Issue date Apr 10, 1979
- Sumitomo Chemical Company, Limited
- Hisao Yamamoto
- C07 - ORGANIC CHEMISTRY