Kazuhiko Maeda

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Production method for alkoxynaphthalenecarboxylic acid
- Patent number 5,550,284
- Issue date Aug 27, 1996
- Sumikin Chemical Co., Ltd.
- Toshio Sato
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for manufacturing 5-hydroxyisophthalic acid
- Patent number 5,416,256
- Issue date May 16, 1995
- Sumikin Chemical Co., Ltd.
- Takeshi Namekata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of high-purity naphthalenecarboxylic ac...
- Patent number 5,095,135
- Issue date Mar 10, 1992
- Sumikin Chemical Co., Ltd.
- Teruaki Yamada
- C07 - ORGANIC CHEMISTRY