Keizo Yamashita

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for producing purine derivatives
- Patent number 6,252,075
- Issue date Jun 26, 2001
- Ajinomoto Co., Inc.
- Hiroshi Shiragami
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing purine derivatives
- Patent number 6,245,910
- Issue date Jun 12, 2001
- Ajinomoto Co., Inc.
- Kunisuke Izawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing purine derivatives
- Patent number 6,087,497
- Issue date Jul 11, 2000
- Ajinomoto Co., Inc.
- Kunisuke Izawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing purine derivatives
- Patent number 5,942,617
- Issue date Aug 24, 1999
- Ajinomoto Co., Inc.
- Hiroshi Shiragami
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing purine derivatives
- Patent number 5,831,092
- Issue date Nov 3, 1998
- Ajinomoto Co., Inc.
- Kunisuke Izawa
- C07 - ORGANIC CHEMISTRY