Watanabe; Yukimasa

Patent Applications and Registrations

Patent applications and USPTO patent grants for Watanabe; Yukimasa.The latest application filed is for "developing roller and developing apparatus and image forming apparatus using the same".

Company Profile

0.11.13

Watanabe; Yukimasa - Osaka JP
Watanabe; Yukimasa - Osaka-shi JP

*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
Developing device and image forming apparatus including the same Grant 9,298,126 - Shimizu , et al. March 29, 2	2016-03-29
Developing device, and image forming apparatus provided with the same Grant 9,285,713 - Saito , et al. March 15, 2	2016-03-15
Positively chargeable electrophotographic photosensitive member and image forming apparatus Grant 9,213,229 - Iwashita , et al. December 15, 2	2015-12-15
Developing Roller And Developing Apparatus And Image Forming Apparatus Using The Same App 20150301473 - Watanabe; Yukimasa ; et al.	2015-10-22
Developing Device And Image Forming Apparatus Including The Same App 20150293470 - SHIMIZU; Tamotsu ; et al.	2015-10-15
Developing Device, And Image Forming Apparatus Provided With The Same App 20150293477 - Saito; Sakae ; et al.	2015-10-15
Positively Chargeable Electrophotographic Photosensitive Member And Image Forming Apparatus App 20140212803 - IWASHITA; Yuko ; et al.	2014-07-31
Electrophotographic Photosensitive Member And Image Forming Apparatus Including Electrophotographic Photosensitive Member App 20140120464 - Iwashita; Yuko ; et al.	2014-05-01
Electro photographic photoconductor and color image forming apparatus Grant 8,642,236 - Hamasaki , et al. February 4, 2	2014-02-04
Drum Unit And Image Forming Apparatus Equipped Therewith App 20080187368 - Watanabe; Yukimasa ; et al.	2008-08-07
Electro Photographic Photoconductor And Color Image Forming Apparatus App 20080187847 - Hamasaki; Kazunari ; et al.	2008-08-07
Electrophotosensitive material Grant 7,090,952 - Azuma , et al. August 15, 2	2006-08-15
Image forming apparatus Grant 6,879,794 - Azuma , et al. April 12, 2	2005-04-12
Electrophotographic photoreceptor and image forming device Grant 6,858,368 - Azuma , et al. February 22, 2	2005-02-22
Electrophotographic Photoreceptor And Image Forming Device App 20040185357 - Azuma, Jun ; et al.	2004-09-23
Electrophotosensitive material App 20040101771 - Azuma, Jun ; et al.	2004-05-27
Single-layer type electrophotosensitive material Grant 6,593,047 - Azuma , et al. July 15, 2	2003-07-15
Image forming apparatus App 20020159804 - Azuma, Jun ; et al.	2002-10-31
Single-layer type electrophotosensitive material App 20020119385 - Azuma, Jun ; et al.	2002-08-29
Single-layer type electrophotosensitive material App 20020098428 - Watanabe, Yukimasa ; et al.	2002-07-25
Phthalocyanine crystal and its production, and electrophotosensitive material using the same Grant 6,391,505 - Hamasaki , et al. May 21, 2	2002-05-21
Single-layer type electrophotosensitive material App 20020045119 - Azuma, Jun ; et al.	2002-04-18
Naphthoquinone derivative Grant 5,863,688 - Watanabe , et al. January 26, 1	1999-01-26

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