Junichi Yasuoka

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Purine derivatives having cyclopropane ring
- Patent number 6,342,603
- Issue date Jan 29, 2002
- Sumika Fine Chemicals Co., Ltd.
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purine derivatives having cyclopropane ring
- Patent number 6,156,892
- Issue date Dec 5, 2000
- Sumika Fire Chemicals Co., Ltd.
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 1, 3-disubstituted urea
- Patent number 5,902,899
- Issue date May 11, 1999
- Sumika Fine Chemicals Co., Ltd.
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY