Iwao Matsumae

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus
- Patent number 7,916,161
- Issue date Mar 29, 2011
- Ricoh Company, Ltd.
- Noboru Kusunose
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical scanning device and image forming apparatus
- Patent number 7,697,184
- Issue date Apr 13, 2010
- Ricoh Company, Ltd.
- Yoshinobu Sakaue
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical scanning device, image forming apparatus, optical scanning...
- Patent number 7,589,756
- Issue date Sep 15, 2009
- Ricoh Company, Limited
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical writing apparatus and image forming apparatus
- Patent number 7,436,425
- Issue date Oct 14, 2008
- Ricoh Company, Ltd.
- Kozo Yamazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 6,033,818
- Issue date Mar 7, 2000
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of coating a toner conveyor roller
- Patent number 5,879,752
- Issue date Mar 9, 1999
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sheet feeding device and image forming apparatus having the same
- Patent number 5,863,036
- Issue date Jan 26, 1999
- Ricoh Company, Ltd.
- Yoshiaki Tanaka
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,845,183
- Issue date Dec 1, 1998
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an electrophotographic recording apparatus in...
- Patent number 5,826,144
- Issue date Oct 20, 1998
- Ricoh Company, Ltd.
- Eiji Takenaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming device for forming a uniform toner layer on a develop...
- Patent number 5,819,145
- Issue date Oct 6, 1998
- Ricoh Company, Ltd.
- Yoshiaki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with bias control to prevent undesirable to...
- Patent number 5,768,665
- Issue date Jun 16, 1998
- Ricoh Company, Ltd.
- Tetsuo Yamanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,708,942
- Issue date Jan 13, 1998
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having the lengths of two toner transporting roll...
- Patent number 5,697,026
- Issue date Dec 9, 1997
- Ricoh Company, Ltd.
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus for electronic photographic recording equipmen...
- Patent number 5,689,782
- Issue date Nov 18, 1997
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for electrostatically developing a latent image on an image...
- Patent number 5,666,625
- Issue date Sep 9, 1997
- Ricoh Company, Ltd.
- Satoru Komatsubara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus having a toner supporting roller with an inner...
- Patent number 5,627,630
- Issue date May 6, 1997
- Ricoh Company, Ltd.
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner, and devices for electrostatically depositing a uniform appli...
- Patent number 5,625,438
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having seals between a toner transport roller and...
- Patent number 5,625,440
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,625,441
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveyor roller and image forming apparatus having the same
- Patent number 5,617,191
- Issue date Apr 1, 1997
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,610,693
- Issue date Mar 11, 1997
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,552,870
- Issue date Sep 3, 1996
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,489,747
- Issue date Feb 6, 1996
- Ricoh Company, Ltd.
- Eiji Takenaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,486,909
- Issue date Jan 23, 1996
- Ricoh Company, Ltd.
- Eiji Takenaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Optical scanning device and image forming apparatus
- Publication number 20080024851
- Publication date Jan 31, 2008
- Ricoh Company, Limited
- Yoshinobu Sakaue
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20070188589
- Publication date Aug 16, 2007
- Noboru KUSUNOSE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical scanning device, image forming apparatus, optical scanning...
- Publication number 20070064087
- Publication date Mar 22, 2007
- Ricoh Company, Limited
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Optical writing apparatus and image forming apparatus
- Publication number 20060055769
- Publication date Mar 16, 2006
- Kozo Yamazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Iwao Matsumae

Person

Patents Grantslast 30 patents

Image forming apparatus

Optical scanning device and image forming apparatus

Optical scanning device, image forming apparatus, optical scanning...

Optical writing apparatus and image forming apparatus

Developing device for an image forming apparatus

Method of coating a toner conveyor roller

Sheet feeding device and image forming apparatus having the same

Developing device for an image forming apparatus

Developing device for an electrophotographic recording apparatus in...

Image forming device for forming a uniform toner layer on a develop...

Image forming apparatus with bias control to prevent undesirable to...

Developing device for an image forming apparatus

Developing device having the lengths of two toner transporting roll...

Developing apparatus for electronic photographic recording equipmen...

Device for electrostatically developing a latent image on an image...

Developing apparatus having a toner supporting roller with an inner...

Toner, and devices for electrostatically depositing a uniform appli...

Developing device having seals between a toner transport roller and...

Developing device for an image forming apparatus

Toner conveyor roller and image forming apparatus having the same

Developing device for an image forming apparatus

Developing device for an image forming apparatus

Developing device for an image forming apparatus

Developing device for an image forming apparatus

Patents Applicationslast 30 patents

Optical scanning device and image forming apparatus

IMAGE FORMING APPARATUS

Optical scanning device, image forming apparatus, optical scanning...

Optical writing apparatus and image forming apparatus