Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6728172 | Objective lens and optical pickup apparatus | Kiyono Ikenaka | 2004-04-27 |
| 6660985 | Optical pick-up device and objective lens therefor | — | 2003-12-09 |
| 6597784 | Compact distributing frame with automated interconnection capability | Eiichi Kakihara | 2003-07-22 |
| 6411587 | Optical pickup optical system, optical pickup apparatus, coupling optical system, coupling optical system lens and recording/reproduction apparatus | Norikazu Arai, Toshiyuki Kojima | 2002-06-25 |
| 6403017 | Process for producing Mn-Zn ferrite | Osamu Kobayashi, Osamu Yamada, Shunji Kawasaki | 2002-06-11 |
| 6296791 | Process for producing Mn-Zn ferrite | Osamu Kobayashi, Osamu Yamada, Shunji Kawasaki | 2001-10-02 |
| 6210598 | Mn-Zn ferrite | Osamu Kobayashi, Shunji Kawasaki | 2001-04-03 |
| 6180022 | Mn-Zn ferrite | Osamu Kobayashi, Shunji Kawasaki | 2001-01-30 |
| 5854726 | Magnetic head device for data cartridge | Shoetsu Kubota | 1998-12-29 |
| 5834634 | Method and apparatus for measuring the toner concentration and the amount of electric charge of a two-component developing agent | Haruo Koyama, Yusuke Ishitani, Nobuaki Kawano | 1998-11-10 |
| 5258253 | Magnetic carrier for electronic reproduction coated with a nitrogen containing silicone resin | Takatomo Fukumoto, Takashi Teshima, Kazuhiko Yamamura, Kyouya Taguchi, Hiroyuki Hazama +1 more | 1993-11-02 |
| 5246809 | Carrier for a developing agent | Masatomi Funato, Hideaki Kawata, Nobuaki Kawano | 1993-09-21 |
| 5085964 | Carrier for developer | Hideaki Kawata, Masatomi Funato, Kiminori Umeda, Nobuaki Kawano | 1992-02-04 |
| 5079124 | Carrier for developer | Hideaki Kawata, Masatomi Funato, Nobuaki Kawano | 1992-01-07 |