Takeo KOYAMA

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Hiratsuka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing diamine derivative
- Patent number 8,404,847
- Issue date Mar 26, 2013
- Daiichi Sankyo Company, Limited
- Takeo Koyama
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for producing diamine derivative
- Patent number 8,357,808
- Issue date Jan 22, 2013
- Daiichi Sankyo Company, Limited
- Takeo Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of silanes
- Patent number 4,775,651
- Issue date Oct 4, 1988
- Toa Nenryo Kogyo Kabushiki Kaisha
- Mamoru Tachikawa
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of silanes
- Patent number 4,725,420
- Issue date Feb 16, 1988
- Toa Nenryo Kogyo Kabushiki Kaisha
- Mamoru Tachikawa
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Catalyst, its method of preparation and process for its use in the...
- Patent number 4,691,070
- Issue date Sep 1, 1987
- Toa Nenryo Kogyo Kabushiki Kaisha
- Teiji Nakamura
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR PRODUCING DIAMINE DERIVATIVE
- Publication number 20120041206
- Publication date Feb 16, 2012
- DAIICHI SANKYO COMPANY, LIMITED
- Takeo Koyama
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PRODUCING DIAMINE DERIVATIVE
- Publication number 20110275821
- Publication date Nov 10, 2011
- DAIICHI SANKYO COMPANY, LIMITED
- Takeo KOYAMA
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE