Takahiko Tokumasu

Person

Atsugi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus, image forming method, and process cartridge
- Patent number 7,593,682
- Issue date Sep 22, 2009
- Ricoh Company, Ltd.
- Takahiko Tokumasu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Lubricant applying unit, process cartridge, image forming apparatus...
- Patent number 7,505,728
- Issue date Mar 17, 2009
- Ricoh Company, Limited
- Daichi Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Lubricant applying unit and image forming apparatus
- Patent number 7,496,324
- Issue date Feb 24, 2009
- Ricoh Company, Ltd.
- Kenji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus using a contact or a proximity type of char...
- Patent number 7,383,013
- Issue date Jun 3, 2008
- Ricoh Company, Ltd.
- Kazuhiko Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and process cartridge
- Patent number 7,295,788
- Issue date Nov 13, 2007
- Ricoh Company, Ltd.
- Hiroshi Nakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus using a contact or a proximity type of char...
- Patent number 7,251,438
- Issue date Jul 31, 2007
- Ricoh Company, Ltd.
- Kazuhiko Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image formation apparatus having a body to be charged with specifie...
- Patent number 7,251,437
- Issue date Jul 31, 2007
- Ricoh Company, Ltd.
- Nozomu Tamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Lubricant applying unit, process cartridge, image forming apparatus...
- Patent number 7,209,699
- Issue date Apr 24, 2007
- Ricoh Company, Limited
- Daichi Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device, image forming process cartridge, and image forming...
- Patent number 7,113,726
- Issue date Sep 26, 2006
- Ricoh Company, Ltd.
- Takahiko Tokumasu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus using a contact or a proximity type of char...
- Patent number 7,103,301
- Issue date Sep 5, 2006
- Ricoh Company, Ltd.
- Kazuhiko Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus with toner fed cleani...
- Patent number 7,058,335
- Issue date Jun 6, 2006
- Ricoh Company, Ltd.
- Kenji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device and image forming apparatus using the cleaning device
- Patent number 6,987,944
- Issue date Jan 17, 2006
- Ricoh Company, Ltd.
- Masahiko Shakuto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device, image forming unit and image forming device
- Patent number 6,721,523
- Issue date Apr 13, 2004
- Ricoh Company, Ltd.
- Kenji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and an apparatus for the same, and a cleaning...
- Patent number 6,398,345
- Issue date Jun 4, 2002
- Ricoh Co., Ltd.
- Katsuo Sakai
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image forming apparatus including preselected range between charge...
- Patent number 6,366,751
- Issue date Apr 2, 2002
- Ricoh Company, Ltd.
- Masahiko Shakuto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for forming a powder image
- Patent number 5,955,228
- Issue date Sep 21, 1999
- Ricoh Company, Ltd.
- Katsuo Sakai
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Thermal recording method using drive signal pulse widths changed at...
- Patent number 5,208,607
- Issue date May 4, 1993
- Ricoh Company, Ltd.
- Takeo Ohashi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Transfer-type thermal printer
- Patent number 4,614,949
- Issue date Sep 30, 1986
- Ricoh Company, Ltd.
- Kunio Hakkaku
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Patents Applicationslast 30 patents

Information Patent Application
IMAGE FORMING APPARATUS USING A CONTACT OR A PROXIMITY TYPE OF CHAR...
- Publication number 20070242992
- Publication date Oct 18, 2007
- Kazuhiko Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LUBRICANT APPLYING UNIT, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS...
- Publication number 20070166087
- Publication date Jul 19, 2007
- Daichi Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus, image forming method, and process cartridge
- Publication number 20060210334
- Publication date Sep 21, 2006
- Takahiko Tokumasu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus using a contact or a proximity type of char...
- Publication number 20060204259
- Publication date Sep 14, 2006
- Kazuhiko Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Lubricant applying unit and image forming apparatus
- Publication number 20060133872
- Publication date Jun 22, 2006
- Kenji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Charging device, image forming process cartridge, and image forming...
- Publication number 20060039719
- Publication date Feb 23, 2006
- Takahiko Tokumasu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus and process cartridge
- Publication number 20050244176
- Publication date Nov 3, 2005
- Hiroshi Nakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image formation apparatus and process cartridge for image formation...
- Publication number 20050196193
- Publication date Sep 8, 2005
- Nozomu Tamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Lubricant applying unit, process cartridge, image forming apparatus...
- Publication number 20050191099
- Publication date Sep 1, 2005
- Daichi Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus using a contact or a proximity type of char...
- Publication number 20040213600
- Publication date Oct 28, 2004
- Kazuhiko Watanabe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Charging device, body to be charged and image forming apparatus usi...
- Publication number 20040042823
- Publication date Mar 4, 2004
- Kenji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Charging device, image forming unit and image forming device
- Publication number 20030072587
- Publication date Apr 17, 2003
- Kenji Sugiura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus having a diamond-like structure surface pro...
- Publication number 20030049050
- Publication date Mar 13, 2003
- Masahiko Shakuto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Cleaning device and image forming apparatus using the cleaning device
- Publication number 20030039494
- Publication date Feb 27, 2003
- Masahiko Shakuto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20020090229
- Publication date Jul 11, 2002
- Masahiko Shakuto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20020081128
- Publication date Jun 27, 2002
- Masahiko Shakuto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Takahiko Tokumasu

Person

Patents Grantslast 30 patents

Image forming apparatus, image forming method, and process cartridge

Lubricant applying unit, process cartridge, image forming apparatus...

Lubricant applying unit and image forming apparatus

Image forming apparatus using a contact or a proximity type of char...

Image forming apparatus and process cartridge

Image forming apparatus using a contact or a proximity type of char...

Image formation apparatus having a body to be charged with specifie...

Lubricant applying unit, process cartridge, image forming apparatus...

Charging device, image forming process cartridge, and image forming...

Image forming apparatus using a contact or a proximity type of char...

Process cartridge and image forming apparatus with toner fed cleani...

Cleaning device and image forming apparatus using the cleaning device

Charging device, image forming unit and image forming device

Image forming method and an apparatus for the same, and a cleaning...

Image forming apparatus including preselected range between charge...

Method and apparatus for forming a powder image

Thermal recording method using drive signal pulse widths changed at...

Transfer-type thermal printer

Patents Applicationslast 30 patents

IMAGE FORMING APPARATUS USING A CONTACT OR A PROXIMITY TYPE OF CHAR...

LUBRICANT APPLYING UNIT, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS...

Image forming apparatus, image forming method, and process cartridge

Image forming apparatus using a contact or a proximity type of char...

Lubricant applying unit and image forming apparatus

Charging device, image forming process cartridge, and image forming...

Image forming apparatus and process cartridge

Image formation apparatus and process cartridge for image formation...

Lubricant applying unit, process cartridge, image forming apparatus...

Image forming apparatus using a contact or a proximity type of char...

Charging device, body to be charged and image forming apparatus usi...

Charging device, image forming unit and image forming device

Image forming apparatus having a diamond-like structure surface pro...

Cleaning device and image forming apparatus using the cleaning device

Image forming apparatus

Image forming apparatus