Tsukasa Maekawa

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Tokushima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Blowing agent powder and process for producing the same
- Patent number 6,399,201
- Issue date Jun 4, 2002
- Otsuka Chemical Co., Ltd.
- Tsukasa Maekawa
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Substantially anhydrous foaming agent and process for producing the...
- Patent number 6,355,698
- Issue date Mar 12, 2002
- Otsuka Chemical Co., Ltd.
- Tsukasa Maekawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for producing 1-aminopyrrolidine, and 1-aminopyrrolidine ac...
- Patent number 5,981,764
- Issue date Nov 9, 1999
- Otsuka Chemical Co., Ltd.
- Tsukasa Maekawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing o-methallyloxyphenol
- Patent number 4,465,867
- Issue date Aug 14, 1984
- Otsuka Kagaku Yakuhin Kabushiki Kaisha
- Tsukasa Maekawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing o-methallyloxyphenol
- Patent number 4,465,868
- Issue date Aug 14, 1984
- Otsuka Kagaku Yakuhin Kabushiki Kaisha
- Tsukasa Maekawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 2,3-dihydro-2,2-dimethyl-7-hydroxybenzofuran
- Patent number 4,451,662
- Issue date May 29, 1984
- Otsuka Kagaku Yakuhin Kabushiki Kaisha
- Tsukasa Maekawa
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
SUBSTANTIALLY ANHYDROUS BLOWING AGENT AND PROCESS FOR PRODUCING THE...
- Publication number 20020025988
- Publication date Feb 28, 2002
- TSUKASA MAEKAWA
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...