Yasumasa Tomita

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical scanning unit and image forming apparatus using same
- Patent number 8,384,752
- Issue date Feb 26, 2013
- Ricoh Company, Ltd.
- Yasumasa Tomita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image forming apparatus capable of producing a high-precision light...
- Patent number 7,821,678
- Issue date Oct 26, 2010
- Ricoh Company, Ltd.
- Yasumasa Tomita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical scanning apparatus, image forming apparatus using the same...
- Patent number 7,612,928
- Issue date Nov 3, 2009
- Ricoh Company, Ltd.
- Yasumasa Tomita
- G02 - OPTICS
Information Patent Grant
Optical scanning device and image forming apparatus
- Patent number 7,598,972
- Issue date Oct 6, 2009
- Ricoh Company, Limited
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical scanning unit having more maintenance-friendly adjustable l...
- Patent number 7,593,149
- Issue date Sep 22, 2009
- Ricoh Company, Ltd.
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical scanner and image forming apparatus including a light shiel...
- Patent number 7,538,924
- Issue date May 26, 2009
- Ricoh Company, Ltd.
- Yasumasa Tomita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical scanning device and image forming apparatus using the device
- Patent number 7,397,589
- Issue date Jul 8, 2008
- Ricoh Company, Ltd.
- Yasumasa Tomita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical scanner and image forming apparatus
- Patent number 7,355,617
- Issue date Apr 8, 2008
- Ricoh Company, Limited
- Keiichi Serizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for image forming capable of preventing image...
- Patent number 7,319,475
- Issue date Jan 15, 2008
- Ricoh Company, Ltd.
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical scanner and image forming apparatus
- Patent number 7,256,813
- Issue date Aug 14, 2007
- Ricoh Company, Limited
- Keiichi Serizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiple-beam scanning device and image forming apparatus including...
- Patent number 7,038,194
- Issue date May 2, 2006
- Ricoh Company, Ltd.
- Yasumasa Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS USING THE DEVICE
- Publication number 20080225365
- Publication date Sep 18, 2008
- Yasumasa Tomita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Optical scanning unit and image forming apparatus using same
- Publication number 20080225102
- Publication date Sep 18, 2008
- Ricoh Company, Ltd.
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical scanning apparatus, image forming apparatus using the same...
- Publication number 20070253049
- Publication date Nov 1, 2007
- Ricoh Company, Ltd.
- Yasumasa Tomita
- G02 - OPTICS
Information Patent Application
OPTICAL SCANNER AND IMAGE FORMING APPARATUS
- Publication number 20070247510
- Publication date Oct 25, 2007
- Keiichi Serizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical scanning unit having more maintenance-friendly adjustable l...
- Publication number 20070159674
- Publication date Jul 12, 2007
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image forming apparatus capable of producing a high-precision light...
- Publication number 20070052957
- Publication date Mar 8, 2007
- Ricoh Company, Ltd.
- Yasumasa Tomita
- G02 - OPTICS
Information Patent Application
Optical scanning device and image forming apparatus
- Publication number 20070030333
- Publication date Feb 8, 2007
- Ricoh Company, Limited
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical scanner and image forming apparatus
- Publication number 20060139440
- Publication date Jun 29, 2006
- Yasumasa Tomita
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Optical scanning device and image forming apparatus using the device
- Publication number 20050111065
- Publication date May 26, 2005
- Yasumasa Tomita
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and apparatus for image forming capable of preventing image...
- Publication number 20050052719
- Publication date Mar 10, 2005
- Yasumasa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical scanner and image forming apparatus
- Publication number 20040169716
- Publication date Sep 2, 2004
- Keiichi Serizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Multiple-beam scanning device and image forming apparatus including...
- Publication number 20040061046
- Publication date Apr 1, 2004
- Yasumasa Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yasumasa Tomita

Person

Patents Grantslast 30 patents

Optical scanning unit and image forming apparatus using same

Image forming apparatus capable of producing a high-precision light...

Optical scanning apparatus, image forming apparatus using the same...

Optical scanning device and image forming apparatus

Optical scanning unit having more maintenance-friendly adjustable l...

Optical scanner and image forming apparatus including a light shiel...

Optical scanning device and image forming apparatus using the device

Optical scanner and image forming apparatus

Method and apparatus for image forming capable of preventing image...

Optical scanner and image forming apparatus

Multiple-beam scanning device and image forming apparatus including...

Patents Applicationslast 30 patents

OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS USING THE DEVICE

Optical scanning unit and image forming apparatus using same

Optical scanning apparatus, image forming apparatus using the same...

OPTICAL SCANNER AND IMAGE FORMING APPARATUS

Optical scanning unit having more maintenance-friendly adjustable l...

Image forming apparatus capable of producing a high-precision light...

Optical scanning device and image forming apparatus

Optical scanner and image forming apparatus

Optical scanning device and image forming apparatus using the device

Method and apparatus for image forming capable of preventing image...

Optical scanner and image forming apparatus

Multiple-beam scanning device and image forming apparatus including...