Choi; Jeong-Jai

Patent Applications and Registrations

Patent applications and USPTO patent grants for Choi; Jeong-Jai.The latest application filed is for "method and apparatus for controlling voltage of image forming apparatus".

Company Profile

0.13.13

Choi; Jeong-Jai - Yongin-si KR
Choi; Jeong-jai - Suwon KR
Choi, Jeong-Jai - Suwon-city KR

*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
Method and apparatus for controlling voltage of image forming apparatus Grant 8,351,810 - Choi January 8, 2	2013-01-08
Charging voltage control method of image forming apparatus using constant voltage control and image forming apparatus thereof Grant 8,326,164 - Choi December 4, 2	2012-12-04
Method and apparatus for controlling voltage of image forming apparatus App 20110085810 - Choi; Jeong-Jai	2011-04-14
Charging device and image forming apparatus using the same Grant 7,809,302 - Choi October 5, 2	2010-10-05
Image forming apparatus and method of preventing carrier from adhering to photo receptor Grant 7,574,159 - Choi August 11, 2	2009-08-11
Image forming apparatus and a method thereof for supplying toner Grant 7,536,119 - Choi May 19, 2	2009-05-19
Charging Device And Image Forming Apparatus Using The Same App 20090074443 - CHOI; Jeong-jai	2009-03-19
Process cartridge usable with an image forming apparatus and including a shutter Grant 7,398,037 - Choi July 8, 2	2008-07-08
Image forming apparatus to control a linear velocity ratio Grant 7,392,000 - Choi June 24, 2	2008-06-24
Apparatus and method for displaying toner residual quantity Grant 7,382,991 - Choi June 3, 2	2008-06-03
Developer collecting apparatus and an image forming apparatus having the same Grant 7,333,763 - Choi February 19, 2	2008-02-19
Apparatus and method for displaying toner residual quantity App 20060245770 - Choi; Jeong-Jai	2006-11-02
Method and apparatus for controlling transfer voltage in image forming device App 20060222391 - Choi; Jeong-jai	2006-10-05
Photosensitive drum of image forming apparatus and method of damping vibration in the drum Grant 7,116,927 - Choi October 3, 2	2006-10-03
Image forming apparatus and method of preventing carrier from adhering to photo receptor App 20060204279 - Choi; Jeong-jai	2006-09-14
Method of controlling an amount of toner charging in an electrophotographic image forming apparatus and apparatus using the same Grant 7,092,648 - Choi August 15, 2	2006-08-15
Process cartridge usable with an image forming apparatus App 20060062603 - Choi; Jeong-jai	2006-03-23
Developer collecting apparatus and an image forming apparatus having the same App 20060062614 - Choi; Jeong-Jai	2006-03-23
Image forming apparatus and a method thereof for supplying toner App 20060018673 - Choi; Jeong-jai	2006-01-26
Photosensitive drum of image forming apparatus and method of damping vibration in the drum App 20050226652 - Choi, Jeong-Jai	2005-10-13
Electrophotographic image-forming apparatus using two-component developer and print density control method thereof Grant 6,954,597 - Choi October 11, 2	2005-10-11
Electrophotographic image-forming apparatus using two-component developer and print density control method thereof App 20050089341 - Choi, Jeong-Jai	2005-04-28
Image forming apparatus App 20050078982 - Choi, Jeong-Jai	2005-04-14
Method of controlling an amount of toner charging in an electrophotographic image forming apparatus and apparatus using the same App 20040218937 - Choi, Jeong-jai	2004-11-04
Developing apparatus of electric photographic printer Grant 6,801,732 - Choi , et al. October 5, 2	2004-10-05
Developing apparatus of electric photographic printer App 20030099482 - Choi, Jeong-Jai ; et al.	2003-05-29

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