Issued Patents All Time
Showing 76–100 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7917077 | Waste-toner housing device, and image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2011-03-29 |
| 7890044 | Powder conveyance device, toner conveyance device, process cartridge and image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2011-02-15 |
| 7873302 | Cleaning device and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Kenzo Tatsumi +1 more | 2011-01-18 |
| 7859772 | Composite optical element and method for manufacturing the same | Kazuaki Takagi, Toshiaki Takano, Jun Murata | 2010-12-28 |
| 7820348 | Toner recovery apparatus, process cartridge, and image forming apparatus | Masayuki Hagi, Yoshihiro Mikuriya, Yoshitaka Sekiguchi, Hideaki Yasunaga, Hiroaki Kato +2 more | 2010-10-26 |
| 7720428 | Toner recovery apparatus, process cartridge, and image forming apparatus | Masayuki Hagi, Yoshihiro Mikuriya, Yoshitaka Sekiguchi, Hideaki Yasunaga, Hiroaki Kato +2 more | 2010-05-18 |
| 7706724 | Charging-roller bearing member, process cartridge, and image forming apparatus | Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Kenzo Tatsumi +1 more | 2010-04-27 |
| 7634213 | Toner collecting device, image forming unit and image forming apparatus | Tomofumi Yoshida, Kenzo Tatsumi, Hirobumi Ooyoshi, Shintaro Yamada | 2009-12-15 |
| 7623821 | Conveyor device, process cartridge, image forming apparatus, and method of forming image | Tomohiro Kubota, Kenzo Tatsumi, Yoshihiro Kawakami, Tomofumi Yoshida, Hirobumi Ooyoshi +1 more | 2009-11-24 |
| D603450 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-11-03 |
| D597129 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-07-28 |
| D590012 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-04-07 |
| D590011 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2009-04-07 |
| D580968 | Process cartridge for image forming apparatus | Kenzo Tatsumi, Yoshihiro Kawakami, Tomohiro Kubota, Koji Kato, Hirobumi Ooyoshi +1 more | 2008-11-18 |
| 7453788 | Optical head, optical information recording/reproducing apparatus, computer, video recording/reproducing apparatus, video reproducing apparatus, server and car navigation system | Akihiro Yasuda, Yoshiaki Komma, Yasuhiro Tanaka | 2008-11-18 |
| 7424263 | Toner recovery belt conveyor, process cartridge, and image forming apparatus using the same | Yoshihiro Kawakami, Tomohiro Kubota, Hirobumi Ooyoshi, Tomofumi Yoshida, Koji Kato +1 more | 2008-09-09 |
| 7090250 | Steering system with tilt control | Satoshi Kinoshita, Kazuhiro Sugiyama, Yoshiyuki Moriya, Yota Uesaka | 2006-08-15 |
| 6495038 | Centrifugal separator with vertically detachable casing | Yusuke KONDOH, Hiroshi Okabe, Kenji Ohya | 2002-12-17 |
| 6260883 | Steering column holding structure | Toshiki Hattori | 2001-07-17 |
| 6219189 | Objective lens unit for reflective fluorescence and reflective fluorescence microscope having an objective lens unit for reflective fluorescence | Kei Tomimatsu | 2001-04-17 |
| 5844729 | Wide angle photographic lens | — | 1998-12-01 |
| 5805361 | Optical element, optical element molding die, and method of molding the optical element | Akira Morimoto, Akira Hosomi | 1998-09-08 |
| 5759457 | Method for manufacturing an optical element | Kenji Inoue, Makoto Umetani, Hidenao Kataoka | 1998-06-02 |
| 5757552 | Microscope objective lens and a microscope incorporating same | Norio Murayama | 1998-05-26 |
| 5704641 | Position stopper of tilt steering column | Yoshifumi Ishida | 1998-01-06 |