Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11231664 | Toner container having a shutter, a lever disposed on one side, and a pivoting portion on the other side which rotate together with a common shaft | Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chui Jung | 2022-01-25 |
| 10915040 | Toner container with an operating structure disposed on a first side, a shutter disposed on a second side, and a lock | Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung | 2021-02-09 |
| 10564572 | Toner container with an operating structure disposed on a first side, and a shutter disposed on a second side | Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung | 2020-02-18 |
| 10365584 | Toner container, developing device, process cartridge, and image forming apparatus that include a toner container contacting surface to contact with a developing device engagement releasing structure | Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung | 2019-07-30 |
| 10025227 | Toner container, developing device, process cartridge, and image forming apparatus that include a toner container contacting surface to contact with a developing device engagement releasing structure | Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung | 2018-07-17 |
| 9690231 | Toner container, developing device, process cartridge, and image forming apparatus that include an operating member to move a shutter for a toner outlet via a linking member | Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung | 2017-06-27 |
| 9378876 | Ferromagnetic particles and process for producing the same, and anisotropic magnet, bonded magnet and compacted magnet | Migaku Takahashi, Tomoyuki Ogawa, Naoya Kobayashi, Chammika Ruwan Polwatta Gallage, Kaori Kohara | 2016-06-28 |
| 9261816 | Developer amount detector, developing device, process unit, and image forming apparatus | Kohta Sakaya, Shinichi Arasawa, Yasuhide Ohkubo | 2016-02-16 |
| 9014593 | Sealing assembly, developing device, process unit, and image forming apparatus incorporating same | Tetsumaru Fujita, Rie Mitani, Takahiro Sanada | 2015-04-21 |
| 8206606 | Oxide magnetic material | Seiichi Hosokawa, Yoshinori Kobayashi, Etsushi Oda | 2012-06-26 |
| 7970312 | Image forming apparatus | — | 2011-06-28 |
| 7962079 | Fixing device and image forming apparatus | — | 2011-06-14 |
| 7906036 | Ferrite sintered magnet | Takashi Takami | 2011-03-15 |
| 7881635 | Image forming apparatus including a detachable convey-guiding member detachably attached to a fixed convey-guiding member fixed to a device main body | Yoshikazu Yamazoe, Yutaka Naito, Shin Yamamoto | 2011-02-01 |
| 7169319 | Anisotropic, sintered ferrite magnet and method for producing the same | Takashi Takami, Yutaka Kubota | 2007-01-30 |
| 6858156 | Ferrite magnet and both rotor and magnet roll comprising the same | Takashi Takami, Yutaka Kubota | 2005-02-22 |
| 6737011 | Method for producing ferrite magnet | Takashi Takami, Yutaka Kubota | 2004-05-18 |
| 6537463 | Resin-bonded magnet, its product, and ferrite magnet powder and compound used therefor | Katsunori Iwasaki, Masahiro Tobise, Mikio Shindo, Hiroshi Okajima | 2003-03-25 |
| 6528159 | Sintered diamond tool and method for manufacturing the same | Yasuyuki Kanada, Yoshihiro Kuroda, Noboru Yamazaki, Kunihiro Tomita, Tetsuo Nakai +1 more | 2003-03-04 |
| 6383407 | Bonded magnet, magnet roll, a ferrite powder used therefor and method for producing same | Yutaka Kubota, Takashi Takami, Shuichi Shiina | 2002-05-07 |
| 6302225 | Polycrystal diamond tool | Katsuhito Yoshida, Junichi Shiraishi, Tetsuo Nakai | 2001-10-16 |
| 6284150 | Bonded magnet, magnet roll, a ferrite powder used therefor and method for producing same | Yutaka Kubota, Takashi Takami, Shuichi Shiina | 2001-09-04 |
| 6261329 | Diamond sintered body having high strength and high wear resistance, and tool including the same | Satoru Kukino, Yasuyuki Kanada, Junichi Shiraishi, Tetsuo Nakai | 2001-07-17 |
| 5958284 | Ferrite magnet and method for producing same | Takashi Takami, Yutaka Kubota | 1999-09-28 |
| 5538657 | Method of producing ferrite magnet | Mikio Yamamoto | 1996-07-23 |