Atsuo TOKUNAGA

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Sheet feeder and image forming apparatus including same
- Patent number 8,366,262
- Issue date Feb 5, 2013
- Ricoh Company, Limited
- Yoshio Miyamoto
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Roll-sheet feeding device and image forming apparatus
- Patent number 8,322,644
- Issue date Dec 4, 2012
- Ricoh Company, Ltd.
- Kikuya Nakada
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Optical device, image reading device, and filter manufacturing method
- Patent number 7,893,394
- Issue date Feb 22, 2011
- Ricoh Company Limited
- Atsuo Tokunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical device and image forming apparatus
- Patent number 7,720,406
- Issue date May 18, 2010
- Ricoh Company, Limited
- Atsuo Tokunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Rolled paper conveying apparatus
- Patent number 7,168,652
- Issue date Jan 30, 2007
- Ricoh Company, Ltd.
- Atsuo Tokunaga
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Stepping motor controller, scanning apparatus, and image forming ap...
- Patent number 6,911,800
- Issue date Jun 28, 2005
- Ricoh Company, Ltd.
- Masato Kobayashi
- G05 - CONTROLLING REGULATING
Information Patent Grant
Optical scanning device and image forming apparatus including the same
- Patent number 6,867,891
- Issue date Mar 15, 2005
- Ricoh Company, Ltd.
- Atsuo Tokunaga
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image formation apparatus, image formation method, and computer pro...
- Patent number 6,825,862
- Issue date Nov 30, 2004
- Ricoh Company, Limited
- Atsuo Tokunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Power supplying apparatus and method for an electrophotographic app...
- Patent number 6,072,703
- Issue date Jun 6, 2000
- Ricoh Company, Ltd.
- Atsuo Tokunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of cleaning a surface in an image forming apparatus by feedi...
- Patent number 5,970,282
- Issue date Oct 19, 1999
- Ricoh Company, Ltd.
- Masato Yanagida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having a cleaning blade for removing deposi...
- Patent number 5,881,339
- Issue date Mar 9, 1999
- Ricoh Company, Ltd.
- Masato Yanagida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Power supply system
- Patent number 5,673,187
- Issue date Sep 30, 1997
- Ricoh Company, Ltd.
- Atsuo Tokunaga
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Roll-Sheet Feeding Device And Image Forming Apparatus
- Publication number 20100327515
- Publication date Dec 30, 2010
- RICOH COMPANY, LTD.,
- Kikuya Nakada
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
OPTICAL DEVICE, IMAGE SCANNING APPARATUS, AND IMAGE FORMING APPARATUS
- Publication number 20080002104
- Publication date Jan 3, 2008
- Atsuo TOKUNAGA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical device and image forming apparatus
- Publication number 20070263283
- Publication date Nov 15, 2007
- Ricoh Company, Limited
- Atsuo Tokunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Stepping motor controller, scanning apparatus, and image forming ap...
- Publication number 20040113581
- Publication date Jun 17, 2004
- Masato Kobayashi
- G05 - CONTROLLING REGULATING
Information Patent Application
Image formation apparatus, image formation method, and computer pro...
- Publication number 20040021760
- Publication date Feb 5, 2004
- Atsuo Tokunaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Optical scanning device and image forming apparatus including the same
- Publication number 20030048516
- Publication date Mar 13, 2003
- Atsuo Tokunaga
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Atsuo TOKUNAGA

Person

Patents Grantslast 30 patents

Sheet feeder and image forming apparatus including same

Roll-sheet feeding device and image forming apparatus

Optical device, image reading device, and filter manufacturing method

Optical device and image forming apparatus

Rolled paper conveying apparatus

Stepping motor controller, scanning apparatus, and image forming ap...

Optical scanning device and image forming apparatus including the same

Image formation apparatus, image formation method, and computer pro...

Power supplying apparatus and method for an electrophotographic app...

Method of cleaning a surface in an image forming apparatus by feedi...

Image forming apparatus having a cleaning blade for removing deposi...

Power supply system

Patents Applicationslast 30 patents

Roll-Sheet Feeding Device And Image Forming Apparatus

OPTICAL DEVICE, IMAGE SCANNING APPARATUS, AND IMAGE FORMING APPARATUS

Optical device and image forming apparatus

Stepping motor controller, scanning apparatus, and image forming ap...

Image formation apparatus, image formation method, and computer pro...

Optical scanning device and image forming apparatus including the same