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Tomoji ISHIKAWA
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Toner container and manufacturing method for toner container
Patent number
9,529,303
Issue date
Dec 27, 2016
Ricoh Company, Ltd.
Kaori Mitsuishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner container and manufacturing method for toner container
Patent number
9,436,127
Issue date
Sep 6, 2016
Ricoh Company, Ltd.
Kaori Mitsuishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner container and manufacturing method for toner container
Patent number
9,213,261
Issue date
Dec 15, 2015
Ricoh Company, Ltd.
Kaori Mitsuishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Powder container and image forming apparatus incorporating same
Patent number
9,170,530
Issue date
Oct 27, 2015
Ricoh Company, Ltd.
Yuki Oshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner container and manufacturing method for toner container
Patent number
8,532,542
Issue date
Sep 10, 2013
Ricoh Company, Limited
Kaori Mitsuishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner container and manufacturing method for toner container
Patent number
8,311,447
Issue date
Nov 13, 2012
Ricoh Company, Limited
Kaori Mitsuishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus of image forming and process cartridge include...
Patent number
7,486,916
Issue date
Feb 3, 2009
Ricoh Company, Ltd.
Kiyonori Tsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus of image forming and process cartridge include...
Patent number
7,162,189
Issue date
Jan 9, 2007
Ricoh Company, Ltd.
Kiyonori Tsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming unit
Patent number
7,146,122
Issue date
Dec 5, 2006
Ricoh Company Limited
Satoshi Hatori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus using installable process cartridge, method...
Patent number
7,136,610
Issue date
Nov 14, 2006
Ricoh Company, Ltd.
Yuji Arai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and image forming unit
Patent number
7,072,602
Issue date
Jul 4, 2006
Ricoh Company Limited
Satoshi Hatori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Powder transport apparatus and image forming apparatus that can sta...
Patent number
7,062,207
Issue date
Jun 13, 2006
Ricoh Company, Ltd.
Kiyonori Tsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having an improved developer-supplying mech...
Patent number
6,336,020
Issue date
Jan 1, 2002
Ricoh Company, Ltd.
Tomoji Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing apparatus and image forming apparatus using the same dev...
Patent number
6,256,459
Issue date
Jul 3, 2001
Ricoh Company, Ltd.
Shin Hasegawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus including a preventing mechanism for preven...
Patent number
6,122,469
Issue date
Sep 19, 2000
Ricoh Company, Ltd.
Tetsuro Miura
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having an improved developer-supplying mech...
Patent number
6,104,900
Issue date
Aug 15, 2000
Ricoh Company, Ltd.
Tomoji Ishikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
PC drum integrated revolving type developing unit with pull-out sup...
Patent number
6,072,967
Issue date
Jun 6, 2000
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus having improved developer limiting member
Patent number
6,070,037
Issue date
May 30, 2000
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
PC drum integrated revolving type developing unit with pull-out sup...
Patent number
5,991,569
Issue date
Nov 23, 1999
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Rotary developing device for an image forming apparatus
Patent number
5,956,549
Issue date
Sep 21, 1999
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Agitation and charging device for an image forming apparatus
Patent number
5,940,664
Issue date
Aug 17, 1999
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Rotary developing device for an image forming apparatus
Patent number
5,850,586
Issue date
Dec 15, 1998
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color image forming device which changes developing bias when switc...
Patent number
5,826,146
Issue date
Oct 20, 1998
Ricoh Company, Ltd.
Takayuki Maruta
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Rotary developing device for an image forming apparatus
Patent number
5,787,328
Issue date
Jul 28, 1998
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner container for a rotary developing device
Patent number
5,768,664
Issue date
Jun 16, 1998
Ricoh Company, Ltd.
Katsuhiro Kosuge
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Developing device for image forming apparatus and toner container t...
Patent number
5,765,059
Issue date
Jun 9, 1998
Ricoh Company, Ltd.
Katsuhiro Kosuge
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus for supplying power to members of a rotary...
Patent number
5,761,576
Issue date
Jun 2, 1998
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner container for a rotary developing device
Patent number
5,758,235
Issue date
May 26, 1998
Ricoh Company, Ltd.
Katsuhiro Kosuge
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Color image forming device which changes developing bias when switc...
Patent number
5,671,470
Issue date
Sep 23, 1997
Ricoh Company, Ltd.
Takayuki Maruta
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus for supplying power to members of a rotary...
Patent number
5,646,721
Issue date
Jul 8, 1997
Ricoh Company, Ltd.
Kazuyuki Sugihara
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
TONER CONTAINER AND MANUFACTURING METHOD FOR TONER CONTAINER
Publication number
20160202632
Publication date
Jul 14, 2016
Kaori MITSUISHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER CONTAINER AND MANUFACTURING METHOD FOR TONER CONTAINER
Publication number
20150293474
Publication date
Oct 15, 2015
Kaori MITSUISHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER CONTAINER AND MANUFACTURING METHOD FOR TONER CONTAINER
Publication number
20130330106
Publication date
Dec 12, 2013
Kaori MITSUISHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
POWDER CONTAINER AND IMAGE FORMING APPARATUS INCORPORATING SAME
Publication number
20110305485
Publication date
Dec 15, 2011
Yuki OSHIKAWA
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER CONTAINER AND MANUFACTURING METHOD FOR TONER CONTAINER
Publication number
20110123216
Publication date
May 26, 2011
Kaori MITSUISHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
TONER CONTAINER AND MANUFACTURING METHOD FOR TONER CONTAINER
Publication number
20110020039
Publication date
Jan 27, 2011
Kaori MITSUISHI
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
METHOD AND APPARATUS OF IMAGE FORMING AND PROCESS CARTRIDGE INCLUDE...
Publication number
20070081835
Publication date
Apr 12, 2007
Kiyonori Tsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and image forming unit
Publication number
20060193655
Publication date
Aug 31, 2006
Satoshi Hatori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Method and apparatus of image forming and process cartridge include...
Publication number
20050281590
Publication date
Dec 22, 2005
Kiyonori Tsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Powder transport apparatus and image forming apparatus that can sta...
Publication number
20040265011
Publication date
Dec 30, 2004
Kiyonori Tsuda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus and image forming unit
Publication number
20040258432
Publication date
Dec 23, 2004
Satoshi Hatori
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Image forming apparatus using installable process cartridge, method...
Publication number
20040170447
Publication date
Sep 2, 2004
Yuji Arai
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY