Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8628905 | Ferrite core material for resin-filled type carrier, resin-filled type carrier, and electrophotographic developer using the carrier | Hiromichi Kobayashi, Tomoyuki Suwa, Toshio Honjo | 2014-01-14 |
| 7906265 | Ferrite carrier for electrophotographic developer, method for producing the same, and electrophotographic developer | Tomoyuki Suwa | 2011-03-15 |
| 7566519 | Carrier for electrophotographic developer, and electrophotographic developer using the same | Hiromichi Kobayashi, Tomoyuki Suwa, Toshio Honjo | 2009-07-28 |
| 7553597 | Carrier core material, coated carrier, and two-component developing agent for electrophotography | Hiromichi Kobayashi, Issei Shinmura, Yuji Sato | 2009-06-30 |
| 7470497 | Two-component developer having a resin coated carrier for electrophotography and toner | Yasuhito Yuasa, Kiminori Umeda, Tetsuya Uemura | 2008-12-30 |
| 7183033 | Carrier core material, coated carrier, two-component developing agent for electrophotography, and image forming method | Issei Shinmura, Hiromichi Kobayashi, Yuji Sato | 2007-02-27 |
| 6905806 | Dry two-component type developer for electrophotography | Takeshi Naito, Hiromichi Kobayashi, Yuji Sato | 2005-06-14 |
| 6686113 | Carrier for electrophotographic developer and developer containing the same | Hiromichi Kobayashi, Takeshi Naito, Yuji Sato | 2004-02-03 |
| 6627369 | Carrier for electrophotographic developer and developer containing the same | Hiromichi Kobayashi, Yasuhiko Kataoka, Yuji Sato | 2003-09-30 |
| 6544707 | Two component developing agent and an image forming apparatus by use of the same | Yasushige Nakamura, Seijiro Ishimaru, Yoshimichi Katagiri, Yuji Sato, Hiromichi Kobayashi | 2003-04-08 |
| 5976747 | Ferrite carrier for electrophotographic developer and electrophotographic developer containing the same | Yuji Sato, Kazunori Takagi, Norio Takei, Toshio Honjo | 1999-11-02 |
| 5965317 | Regeneration of carrier and electrophotographic developer containing regenerated carrier | Yuji Sato, Toshio Honjo | 1999-10-12 |