Akio Kozima

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
3,6-Disazo-9-ethyl carbazole compounds
- Patent number 4,426,327
- Issue date Jan 17, 1984
- Ricoh Co., Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic element containing disazo compounds
- Patent number 4,348,470
- Issue date Sep 7, 1982
- Ricoh Co., Ltd.
- Akio Kozima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic sensitive materials containing disazo compounds
- Patent number 4,314,015
- Issue date Feb 2, 1982
- Ricoh Co., Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic element with a combination of binder resins
- Patent number 4,301,224
- Issue date Nov 17, 1981
- Ricoh Co., Ltd.
- Akio Kozima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic sensitive materials containing a disazo pigment
- Patent number 4,299,896
- Issue date Nov 10, 1981
- Ricoh Co., Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic elements containing disazo compounds
- Patent number 4,293,628
- Issue date Oct 6, 1981
- Ricoh Co., Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic elements containing trisazo compounds
- Patent number 4,279,981
- Issue date Jul 21, 1981
- Ricoh Company, Ltd.
- Masafumi Ohta
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic material containing disazo compounds
- Patent number 4,272,598
- Issue date Jun 9, 1981
- Ricoh Co., Ltd.
- Masaomi Sasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive material with electron donors an...
- Patent number 4,264,695
- Issue date Apr 28, 1981
- Ricoh Co., Ltd.
- Akio Kozima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic element with carbazole-phenyhydrazone charge tr...
- Patent number 4,256,821
- Issue date Mar 17, 1981
- Ricoh Company, Ltd.
- Takamichi Enomoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
2-Hydroxy-3-carbonylanilinonaphth-1-yl disazo derivatives and 1-phe...
- Patent number 4,242,260
- Issue date Dec 30, 1980
- Ricoh Company, Ltd.
- Masaomi Sasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoconductive sensitive material with a trinitro-11-indeno[1,2-b]...
- Patent number 4,148,638
- Issue date Apr 10, 1979
- Ricoh Co., Ltd.
- Masafumi Ohta
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic light-sensitive member
- Patent number 4,135,928
- Issue date Jan 23, 1979
- Ricoh Co., Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
3-(9-Fluorenylidene)carbazole derivatives and electrophotographic l...
- Patent number 4,134,761
- Issue date Jan 16, 1979
- Ricoh Co., Ltd.
- Mitsuo Okazaki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photoconductive member having a charge generating pigment and 2,4,7...
- Patent number 4,108,656
- Issue date Aug 22, 1978
- Ricoh Co., Ltd.
- Masafumi Ohta
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Akio Kozima

Person

Patents Grantslast 30 patents

3,6-Disazo-9-ethyl carbazole compounds

Electrophotographic element containing disazo compounds

Electrophotographic sensitive materials containing disazo compounds

Electrophotographic element with a combination of binder resins

Electrophotographic sensitive materials containing a disazo pigment

Electrophotographic elements containing disazo compounds

Electrophotographic elements containing trisazo compounds

Electrophotographic material containing disazo compounds

Electrophotographic photosensitive material with electron donors an...

Electrophotographic element with carbazole-phenyhydrazone charge tr...

2-Hydroxy-3-carbonylanilinonaphth-1-yl disazo derivatives and 1-phe...

Photoconductive sensitive material with a trinitro-11-indeno[1,2-b]...

Electrophotographic light-sensitive member

3-(9-Fluorenylidene)carbazole derivatives and electrophotographic l...

Photoconductive member having a charge generating pigment and 2,4,7...