Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8539115 | Server device, system, and operation environment management method | — | 2013-09-17 |
| 8099310 | Maintenance scheduling system, maintenance scheduling method, and image forming apparatus | Yoshikatsu Kumisuwa, Hiroyo Katou | 2012-01-17 |
| 7774169 | Maintenance system and method | Yoshikatsu Kamisuwa | 2010-08-10 |
| 7555660 | Electric-power management of at least one image forming apparatus to control power consumption of a building | Yoshikatsu Kamisuwa | 2009-06-30 |
| 7474988 | Maintenance system and method and program therefor | Yoshikatsu Kamisuwa | 2009-01-06 |
| 7467841 | Maintenance scheduling system, maintenance scheduling method and image forming apparatus | Yoshikatsu Kamisuwa | 2008-12-23 |
| 7466464 | Image forming apparatus and image forming method | Shigeru Fujiwara, Hideaki Fukaya | 2008-12-16 |
| 7236276 | Image forming apparatus and image forming method | Shigeru Fujiwara, Hideaki Fukaya | 2007-06-26 |
| 7100158 | Program management apparatus, program management system, and program management method | Osamu Tachiyama, Kazuo Sumioka, Seiya Shimizu, Shuichi Tsujimoto, Masanori Kawasumi +4 more | 2006-08-29 |
| 6747766 | Color image reader for use in image forming apparatus | Yoshikatsu Kamisuwa, Koji Tanimoto | 2004-06-08 |
| 6591147 | Adjustment control and adjustment control method | — | 2003-07-08 |
| 6553191 | Adjustment-control system for image forming apparatus | — | 2003-04-22 |
| 6529694 | Image forming apparatus with density control | Hideaki Fukaya, Shigeru Fujiwara | 2003-03-04 |
| 5995777 | Image forming apparatus and examination image forming method in image forming apparatus | Katsuya Nagamochi | 1999-11-30 |
| 5898507 | Image processing apparatus | Hiroki Kanno | 1999-04-27 |
| 5640189 | Image forming apparatus using an electrode matrix to form a latent image | Tadayoshi Ohno, Naruhito Yoshida, Koji Tanimoto | 1997-06-17 |
| 5461462 | Image forming apparatus having a function that automatically adjusts a control standard value for controlling image quality | Jiro Egawa | 1995-10-24 |
| 5398099 | Image forming apparatus with bias means for preventing toner particles from clouding optical components | Katsuya Nagamochi | 1995-03-14 |
| 5365313 | Image forming apparatus for controlling image density using logarithm compressing means | Katsuya Nagamochi | 1994-11-15 |
| 5351107 | Image forming apparatus and method having image density correcting function | Jiro Egawa | 1994-09-27 |
| 5321468 | Image forming apparatus having inference means and method of manufacturing the same | Jiro Egawa | 1994-06-14 |
| 5315352 | Image forming apparatus for forming an image on an image bearing member | Jiro Egawa | 1994-05-24 |
| 5298943 | Image forming apparatus for correcting image density drift | Naoaki Ide | 1994-03-29 |
| 5270784 | Image forming apparatus having means for measuring the amount of developing agent on the image carrier | Jiro Egawa | 1993-12-14 |
| 5266997 | Electrophotographic image forming apparatus including means for correcting density drift | Jiro Egawa, Shigeru Fujiwara | 1993-11-30 |