Hiroaki Tagawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hexa-cyclic compound
- Patent number 5,061,795
- Issue date Oct 29, 1991
- Daiichi Pharmaceutical Co., Ltd.
- Hiroaki Tagawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hexa-cyclic camptothecin derivatives
- Patent number 4,939,255
- Issue date Jul 3, 1990
- Daiichi Pharmaceutical Co., Ltd.
- Hiroaki Tagawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cephalosporin derivatives and salts thereof
- Patent number 4,833,242
- Issue date May 23, 1989
- Daiichi Seiyaku Co., Ltd.
- Minoru Furukawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Certain pyrano (3,4-f)-indolizine derivatives
- Patent number 4,778,891
- Issue date Oct 18, 1988
- Daiichi Seiyaku Co., Ltd.
- Hiroaki Tagawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Cephalosporin derivatives
- Patent number 4,603,198
- Issue date Jul 29, 1986
- Daiichi Seiyaku Co., Ltd.
- Masahiro Arimoto
- C07 - ORGANIC CHEMISTRY