Fukagai Toshio

Person

Numazu-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming method, image forming apparatus, process cartridge an...
- Patent number 6,830,857
- Issue date Dec 14, 2004
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image forming method, image forming apparatus, process cartridge an...
- Patent number 6,821,694
- Issue date Nov 23, 2004
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Photoreceptor, method of evaluating a photoreceptor, and method of...
- Patent number 6,649,313
- Issue date Nov 18, 2003
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoreceptor, method of evaluating the photoreceptor, method of pr...
- Patent number 6,534,227
- Issue date Mar 18, 2003
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic image forming apparatus, and photoreceptor ther...
- Patent number 6,521,388
- Issue date Feb 18, 2003
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor
- Patent number 5,670,284
- Issue date Sep 23, 1997
- Ricoh Company, Ltd.
- Hiroyuki Kishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Polymers of acrylic acid ester derivatives having a triphenyl amine...
- Patent number 5,608,010
- Issue date Mar 4, 1997
- Ricoh Company, Ltd.
- Hiroshi Tamura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Acrylic acid ester derivative having a triphenyl amine skeleton
- Patent number 5,488,137
- Issue date Jan 30, 1996
- Ricoh Company, Ltd.
- Hiroshi Tamura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic Photoconductor
- Patent number 5,427,880
- Issue date Jun 27, 1995
- Ricoh Company, Ltd.
- Hiroshi Tamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic image formation method
- Patent number 5,339,138
- Issue date Aug 16, 1994
- Ricoh Company, Ltd.
- Naoshi Mishima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and acrylic acid ester polymer f...
- Patent number 5,322,753
- Issue date Jun 21, 1994
- Ricoh Company, Ltd.
- Hiroshi Tamura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic photoconductor having intermediate layer compri...
- Patent number 5,135,829
- Issue date Aug 4, 1992
- Ricoh Company, Ltd.
- Toshio Fukagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor having overcoat layer
- Patent number 4,970,131
- Issue date Nov 13, 1990
- Ricoh Company, Ltd.
- Kiyoshi Taniguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor having intermediate layer compri...
- Patent number 4,946,766
- Issue date Aug 7, 1990
- Ricoh Company, Ltd.
- Toshio Fukagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor with undercoat layer containing...
- Patent number 4,906,545
- Issue date Mar 6, 1990
- Ricoh Company, Ltd.
- Toshio Fukagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor comprising charge generating and...
- Patent number 4,863,822
- Issue date Sep 5, 1989
- Ricoh Company Ltd.
- Toshio Fukagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor
- Patent number 4,830,942
- Issue date May 16, 1989
- Ricoh Company Ltd.
- Toshio Fukagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor with layer preventing charge inj...
- Patent number 4,822,705
- Issue date Apr 18, 1989
- Ricoh Company, Ltd.
- Toshio Fukagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Layered electrophotographic photoconductor containing a hydrazone
- Patent number 4,481,271
- Issue date Nov 6, 1984
- Ricoh Company, Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Layered charge generator/transport electrophotographic photoconduct...
- Patent number 4,390,608
- Issue date Jun 28, 1983
- Ricoh Company, Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Layered electrophotographic photoconductor
- Patent number 4,284,698
- Issue date Aug 18, 1981
- Ricoh Company, Ltd.
- Takeo Kazami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Photoreceptor, method of evaluating a photoreceptor, and method of...
- Publication number 20030175606
- Publication date Sep 18, 2003
- Toshiyuki Kabata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming method, image forming apparatus, process cartridge an...
- Publication number 20030138711
- Publication date Jul 24, 2003
- Toshiyuki Kabata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image forming method, image forming apparatus, process cartridge an...
- Publication number 20030129511
- Publication date Jul 10, 2003
- Toshiyuki Kabata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Photoreceptor, method of evaluting the photoreceptor, method of pro...
- Publication number 20020018947
- Publication date Feb 14, 2002
- RICOH COMPANY, LTD.
- Toshiyuki Kabata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrophotographic image forming apparatus, and photoreceptor ther...
- Publication number 20010044062
- Publication date Nov 22, 2001
- RICOH COMPANY, LTD.
- Kabata Toshiyuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Fukagai Toshio

Person

Patents Grantslast 30 patents

Image forming method, image forming apparatus, process cartridge an...

Image forming method, image forming apparatus, process cartridge an...

Photoreceptor, method of evaluating a photoreceptor, and method of...

Photoreceptor, method of evaluating the photoreceptor, method of pr...

Electrophotographic image forming apparatus, and photoreceptor ther...

Electrophotographic photoconductor

Polymers of acrylic acid ester derivatives having a triphenyl amine...

Acrylic acid ester derivative having a triphenyl amine skeleton

Electrophotographic Photoconductor

Electrophotographic image formation method

Electrophotographic photoconductor and acrylic acid ester polymer f...

Electrophotographic photoconductor having intermediate layer compri...

Electrophotographic photoconductor having overcoat layer

Electrophotographic photoconductor having intermediate layer compri...

Electrophotographic photoconductor with undercoat layer containing...

Electrophotographic photoconductor comprising charge generating and...

Electrophotographic photoconductor

Electrophotographic photoconductor with layer preventing charge inj...

Layered electrophotographic photoconductor containing a hydrazone

Layered charge generator/transport electrophotographic photoconduct...

Layered electrophotographic photoconductor

Patents Applicationslast 30 patents

Photoreceptor, method of evaluating a photoreceptor, and method of...

Image forming method, image forming apparatus, process cartridge an...

Image forming method, image forming apparatus, process cartridge an...

Photoreceptor, method of evaluting the photoreceptor, method of pro...

Electrophotographic image forming apparatus, and photoreceptor ther...