Katsuo Sakai

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus for forming a color image, and image formin...
- Patent number 8,158,313
- Issue date Apr 17, 2012
- Ricoh Company, Ltd.
- Takeo Tsukamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus capable of a color image, and image forming...
- Patent number 7,796,294
- Issue date Sep 14, 2010
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and image forming method using electrostati...
- Patent number 7,672,604
- Issue date Mar 2, 2010
- Ricoh Company, Ltd.
- Tomoko Takahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner supplying system for an image forming apparatus
- Patent number 7,308,222
- Issue date Dec 11, 2007
- Ricoh Company, Ltd.
- Yoshinori Nakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and process cartridge
- Patent number 7,236,720
- Issue date Jun 26, 2007
- Ricoh Company, Ltd.
- Yasushi Nakazato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus, developing method, image forming apparatus, i...
- Patent number 7,200,352
- Issue date Apr 3, 2007
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner transport device for image-forming device
- Patent number 7,187,892
- Issue date Mar 6, 2007
- Ricoh Company, Ltd.
- Masanori Horike
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device using electrostatic transport member
- Patent number 7,123,864
- Issue date Oct 17, 2006
- Ricoh Company, Ltd.
- Yohichiro Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus, developing method, image forming apparatus, i...
- Patent number 7,024,142
- Issue date Apr 4, 2006
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic transportation device, development device and image f...
- Patent number 6,947,691
- Issue date Sep 20, 2005
- Ricoh Company, Ltd.
- Yohichiro Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus, developing method, image forming apparatus, i...
- Patent number 6,901,231
- Issue date May 31, 2005
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic transportation device, development device and image f...
- Patent number 6,708,014
- Issue date Mar 16, 2004
- Ricoh Company, Ltd.
- Yohichiro Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Duplex image transferring device using liquid toner development
- Patent number 6,597,887
- Issue date Jul 22, 2003
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including electrostatic conveyance of charg...
- Patent number 6,597,884
- Issue date Jul 22, 2003
- Ricoh Company, Ltd.
- Yohichiroh Miyaguchi
- 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
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
Side-free recording apparatus
- Patent number 5,204,716
- Issue date Apr 20, 1993
- Ricoh Company, Ltd.
- Nobuo Kasahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for transporting sheet members using an alternating voltage
- Patent number 5,121,170
- Issue date Jun 9, 1992
- Ricoh Company, Ltd.
- Kazunori Bannai
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Color recording apparatus
- Patent number 4,933,727
- Issue date Jun 12, 1990
- Ricoh Company, Ltd.
- Kenichi Mizuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color electrophotographic copying process
- Patent number 4,690,541
- Issue date Sep 1, 1987
- Ricoh Company, Ltd.
- Yoshihiro Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of and apparatus for producing duplicates in color
- Patent number 4,664,501
- Issue date May 12, 1987
- Ricoh Company, Ltd.
- Yutaka Koizumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multicolored image forming apparatus
- Patent number 4,655,579
- Issue date Apr 7, 1987
- Ricoh Company, Ltd.
- Tsukasa Adachi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Dual-color copier
- Patent number 4,615,607
- Issue date Oct 7, 1986
- Ricoh Company, Ltd.
- Nobuyuki Yanagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Recording apparatus
- Patent number 4,544,935
- Issue date Oct 1, 1985
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color recording method
- Patent number 4,521,502
- Issue date Jun 4, 1985
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Information image synthesizing and copying method
- Patent number 4,407,917
- Issue date Oct 4, 1983
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process of synthesizing and recording images
- Patent number 4,384,033
- Issue date May 17, 1983
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Two color electrophotographic process and material
- Patent number 4,335,194
- Issue date Jun 15, 1982
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Two color electrostatographic process
- Patent number 4,310,610
- Issue date Jan 12, 1982
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Three color electrostatographic process
- Patent number 4,281,051
- Issue date Jul 28, 1981
- Ricoh Company, Ltd.
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Searching Method for Acquiring Ground Information
- Publication number 20100024535
- Publication date Feb 4, 2010
- Yoshito Maeda
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
Image forming apparatus capable of a color image, and image forming...
- Publication number 20070013924
- Publication date Jan 18, 2007
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus for forming a color image, and image formin...
- Publication number 20070015071
- Publication date Jan 18, 2007
- Takeo Tsukamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus and image forming method
- Publication number 20060251449
- Publication date Nov 9, 2006
- Tomoko Takahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Toner supplying system for an image forming apparatus
- Publication number 20060210320
- Publication date Sep 21, 2006
- Yoshinori Nakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing apparatus, developing method, image forming apparatus, i...
- Publication number 20060120765
- Publication date Jun 8, 2006
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing apparatus, developing method, image forming apparatus, i...
- Publication number 20050175377
- Publication date Aug 11, 2005
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus and process cartridge
- Publication number 20050158073
- Publication date Jul 21, 2005
- Yasushi Nakazato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Toner transport device for image-forming device
- Publication number 20050025525
- Publication date Feb 3, 2005
- Masanori Horike
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing device using electrostatic transport member
- Publication number 20040240907
- Publication date Dec 2, 2004
- Yohichiro Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrostatic transportation device, development device and image f...
- Publication number 20040156655
- Publication date Aug 12, 2004
- Yohichiro Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrostatic transportation device, development device and image f...
- Publication number 20020131795
- Publication date Sep 19, 2002
- Yohichiro Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Duplex image transferring device and image forming apparatus using...
- Publication number 20020064403
- Publication date May 30, 2002
- Katsuo Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20020037182
- Publication date Mar 28, 2002
- RICOH COMPANY, LTD.
- Yohichiroh Miyaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Katsuo Sakai

Person

Patents Grantslast 30 patents

Image forming apparatus for forming a color image, and image formin...

Image forming apparatus capable of a color image, and image forming...

Image forming apparatus and image forming method using electrostati...

Toner supplying system for an image forming apparatus

Image forming apparatus and process cartridge

Developing apparatus, developing method, image forming apparatus, i...

Toner transport device for image-forming device

Developing device using electrostatic transport member

Developing apparatus, developing method, image forming apparatus, i...

Electrostatic transportation device, development device and image f...

Developing apparatus, developing method, image forming apparatus, i...

Electrostatic transportation device, development device and image f...

Duplex image transferring device using liquid toner development

Image forming apparatus including electrostatic conveyance of charg...

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

Method and apparatus for forming a powder image

Side-free recording apparatus

Device for transporting sheet members using an alternating voltage

Color recording apparatus

Color electrophotographic copying process

Method of and apparatus for producing duplicates in color

Multicolored image forming apparatus

Dual-color copier

Recording apparatus

Color recording method

Information image synthesizing and copying method

Process of synthesizing and recording images

Two color electrophotographic process and material

Two color electrostatographic process

Three color electrostatographic process

Patents Applicationslast 30 patents

Searching Method for Acquiring Ground Information

Image forming apparatus capable of a color image, and image forming...

Image forming apparatus for forming a color image, and image formin...

Image forming apparatus and image forming method

Toner supplying system for an image forming apparatus

Developing apparatus, developing method, image forming apparatus, i...

Developing apparatus, developing method, image forming apparatus, i...

Image forming apparatus and process cartridge

Toner transport device for image-forming device

Developing device using electrostatic transport member

Electrostatic transportation device, development device and image f...

Electrostatic transportation device, development device and image f...

Duplex image transferring device and image forming apparatus using...

Image forming apparatus