Ryoichi Otsuka

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Nishinomiya-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing 3,5-di-tert-butyl-4-hydroxybenzoic acid
- Patent number 7,102,028
- Issue date Sep 5, 2006
- Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
- Ryoichi Otsuka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Columnar crystals of 6-hydroxy-2-naphthoic acid and process for man...
- Patent number 6,451,109
- Issue date Sep 17, 2002
- Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
- Ryuzo Ueno
- C30 - CRYSTAL GROWTH

Patents Applicationslast 30 patents

Information Patent Application
Process for production of hydroxybenzoic acids
- Publication number 20060183939
- Publication date Aug 17, 2006
- Ryuzo Ueno
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for producing 3, 5-di-tert-butyl-4-hydroxybenzoic acid
- Publication number 20050267311
- Publication date Dec 1, 2005
- KABUSHIKI KAISHA UENO SEIYAKU OYO KENKYUJO
- Ryoichi Otsuka
- C07 - ORGANIC CHEMISTRY