Koyama; Tetsu

Patent Applications and Registrations

Patent applications and USPTO patent grants for Koyama; Tetsu.The latest application filed is for "developer container, image formation unit, and image formation apparatus".

Company Profile

4.25.18

Koyama; Tetsu - Tokyo JP
KOYAMA; Tetsu - Minato-ku Tokyo
Koyama; Tetsu - San Jose CA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Developer container, image formation unit, and image formation apparatus Grant 10,606,208 - Saito , et al.	2020-03-31
Replaceable unit, developing unit, image forming unit, and image forming apparatus Grant 10,466,619 - Koyama , et al. No	2019-11-05
Toner container, image forming unit including the toner container, and image forming apparatus including the toner container Grant 10,274,866 - Koyama , et al.	2019-04-30
Developer Container, Image Formation Unit, And Image Formation Apparatus App 20190094786 - SAITO; Hisatoshi ; et al.	2019-03-28
Replaceable Unit, Developing Unit, Image Forming Unit, And Image Forming Apparatus App 20180275560 - KOYAMA; Tetsu ; et al.	2018-09-27
Toner Container, Image Forming Unit, And Image Forming Apparatus App 20180088490 - KOYAMA; Tetsu ; et al.	2018-03-29
Developer Storage Body, Image Forming Unit And Image Forming Apparatus App 20160274533 - KOYAMA; Tetsu	2016-09-22
Developer storage body, image forming unit and image forming apparatus Grant 9,448,530 - Koyama September 20, 2	2016-09-20
Image forming unit and image forming apparatus Grant 9,223,249 - Shimada , et al. December 29, 2	2015-12-29
Image forming unit and image forming apparatus Grant 9,217,952 - Koyama , et al. December 22, 2	2015-12-22
Image forming unit and image forming apparatus that incorporates the image forming unit Grant 9,152,125 - Koyama October 6, 2	2015-10-06
Image Forming Unit And Image Forming Apparatus App 20150147097 - SHIMADA; Shingo ; et al.	2015-05-28
Developer storage container, image forming unit and image forming apparatus Grant 8,983,342 - Koyama , et al. March 17, 2	2015-03-17
Image Forming Unit And Image Forming Apparatus That Incorporates The Image Forming Unit App 20150003867 - KOYAMA; Tetsu	2015-01-01
Image forming unit having agitating portion and image forming apparatus Grant 8,712,294 - Koyama , et al. April 29, 2	2014-04-29
Image Forming Unit And Image Forming Apparatus App 20130223856 - KOYAMA; Tetsu ; et al.	2013-08-29
Developer Storage Container, Image Forming Unit And Image Forming Apparatus App 20130164041 - Koyama; Tetsu ; et al.	2013-06-27
Image Forming Unit And Image Forming Apparatus App 20120093541 - KOYAMA; Tetsu ; et al.	2012-04-19
Image forming unit and image forming apparatus Grant 7,957,682 - Koyama June 7, 2	2011-06-07
Developing device and image forming apparatus Grant 7,917,059 - Koyama March 29, 2	2011-03-29
Developing device Grant 7,522,851 - Koyama , et al. April 21, 2	2009-04-21
Image forming unit and image forming apparatus App 20090010689 - Koyama; Tetsu	2009-01-08
Developing device and image forming apparatus Grant 7,437,105 - Koyama October 14, 2	2008-10-14
Developing device and image forming apparatus App 20080205932 - Koyama; Tetsu	2008-08-28
Image recording apparatus Grant 7,400,837 - Koyama July 15, 2	2008-07-15
Image forming apparatus Grant 7,313,356 - Koyama December 25, 2	2007-12-25
Toner cartridge Grant D546,873 - Otani , et al. July 17, 2	2007-07-17
Image forming apparatus with mechanism to control toner replenishment Grant 7,187,876 - Ito , et al. March 6, 2	2007-03-06
Developing Device And Image Forming Apparatus App 20070031168 - KOYAMA; Tetsu	2007-02-08
Image drum cartridge Grant D529,076 - Kobayashi , et al. September 26, 2	2006-09-26
Image recording apparatus App 20060051110 - Koyama; Tetsu	2006-03-09
Developing device App 20050196184 - Koyama, Tetsu ; et al.	2005-09-08
Toner container, print process cartridge and image forming apparatus Grant 6,934,490 - Koyama , et al. August 23, 2	2005-08-23
Image forming apparatus App 20050117919 - Ito, Junichi ; et al.	2005-06-02
Four dimensional equalizer and far-end cross talk canceler in Gigabit Ethernet signals Grant 6,859,508 - Koyama , et al. February 22, 2	2005-02-22
Image drum cartridge Grant D501,020 - Otani , et al. January 18, 2	2005-01-18
Toner cartridge Grant D491,602 - Koyama , et al. June 15, 2	2004-06-15
Developing device having means to remove developer from a developer supplying member Grant 6,711,371 - Koyama , et al. March 23, 2	2004-03-23
Toner container, print process cartridge and image forming apparatus App 20040047651 - Koyama, Tetsu ; et al.	2004-03-11
Developing device App 20020159796 - Koyama, Tetsu ; et al.	2002-10-31
Developing unit App 20020041778 - Muto, Eisaku ; et al.	2002-04-11
DC termination circuit for subscriber cables Grant 4,984,250 - Koyama January 8, 1	1991-01-08

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