Eiji Iwamoto

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Yamato, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing gamma phase quinacridone
- Patent number 4,247,696
- Issue date Jan 27, 1981
- Toyo Soda Manufacturing Co., Ltd.
- Katusya Shibata
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for purifying crude isoindolinone series pigments
- Patent number 4,223,152
- Issue date Sep 16, 1980
- Toyo Soda Manufacturing Co., Ltd.
- Osamu Fujii
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for producing quinazolone derivatives
- Patent number 4,132,851
- Issue date Jan 2, 1979
- Toyo Soda Manufacturing Co., Ltd.
- Yasukazu Yokoyama
- C07 - ORGANIC CHEMISTRY