Takehiko Kawakami

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Osaka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Crystal and solvate of 2-amino-6-benzyloxypurine and production met...
- Patent number 7,345,170
- Issue date Mar 18, 2008
- Sumitomo Chemical Company, Limited
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 2,6-dihalogenopurine
- Patent number 7,321,035
- Issue date Jan 22, 2008
- Sumitomo Chemical Company, Limited
- Naruhito Masai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production method of 2,6-dihalopurine
- Patent number 7,307,167
- Issue date Dec 11, 2007
- Sumitomo Chemical Company, Limited
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 2,6-dihalogenopurine
- Patent number 6,936,713
- Issue date Aug 30, 2005
- Sumitomo Chemical Company, Limited
- Naruhito Masai
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Alkynylpurine compounds and production methods thereof
- Publication number 20060100429
- Publication date May 11, 2006
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Production method of 2,6-dihalopurine
- Publication number 20050131229
- Publication date Jun 16, 2005
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for producing 2,6-dihalogenopurine
- Publication number 20050090666
- Publication date Apr 28, 2005
- Sumitomo Chemical Company, Limited
- Naruhito Masai
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Crystal and solvate of 2-amino-6-benzyloxypurine and production met...
- Publication number 20050080098
- Publication date Apr 14, 2005
- Taketo Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for producing 2,6-dihalogenopurine
- Publication number 20030144508
- Publication date Jul 31, 2003
- Naruhito Masai
- C07 - ORGANIC CHEMISTRY