Takanobu Watanabe

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method for purifying electronic item material
- Patent number 6,858,161
- Issue date Feb 22, 2005
- Hodogaya Chemical Co., Ltd.
- Katsumi Abe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diamine compounds and electrophotographic photoreceptor
- Patent number 5,840,980
- Issue date Nov 24, 1998
- Hodogaya Chemical Co., Ltd.
- Mitsutoshi Anzai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic photoreceptor with acenaphthene compound
- Patent number 5,728,500
- Issue date Mar 17, 1998
- Hodogaya Chemical Co., Ltd.
- Atsushi Takesue
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic photoreceptor containing amine compound
- Patent number 5,721,082
- Issue date Feb 24, 1998
- Hodogaya Chemical Co., Ltd.
- Atsushi Takesue
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diamine compounds and electrophotographic photoreceptor
- Patent number 5,707,768
- Issue date Jan 13, 1998
- Hodogaya Chemical Co., Ltd.
- Mitsutoshi Anzai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Amine compound
- Patent number 5,654,481
- Issue date Aug 5, 1997
- Hodogaya Chemical Co., Ltd.
- Mitsutoshi Anzai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrazone compounds
- Patent number 5,629,421
- Issue date May 13, 1997
- Hodagaya Chemical Co., Ltd.
- Atsushi Takesue
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrazone compound and electrophotographic photoreceptor and organi...
- Patent number 5,512,400
- Issue date Apr 30, 1996
- Hodogaya Chemical Co., Ltd.
- Atsushi Takesue
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Method for purifying electronic item material
- Publication number 20030050489
- Publication date Mar 13, 2003
- Hodogaya Chemical Co., Ltd.
- Katsumi Abe
- C07 - ORGANIC CHEMISTRY

Takanobu Watanabe

Person

Patents Grantslast 30 patents

Method for purifying electronic item material

Diamine compounds and electrophotographic photoreceptor

Electrophotographic photoreceptor with acenaphthene compound

Electrophotographic photoreceptor containing amine compound

Diamine compounds and electrophotographic photoreceptor

Amine compound

Hydrazone compounds

Hydrazone compound and electrophotographic photoreceptor and organi...

Patents Applicationslast 30 patents

Method for purifying electronic item material