Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7450892 | Electrophotograph developing roller and image forming device using the same | Shinji Matsuzawa | 2008-11-11 |
| 6008619 | Motor drive apparatus and motor driving method capable of simply reducing rotating speed in PWM mode | Makoto Murase, Kazunari Mizuguchi, Tatsuo Nishizawa | 1999-12-28 |
| 5919591 | Electrophotographic photoconductor and method of manufacturing the same | Naoyuki Senba | 1999-07-06 |
| 5905009 | Charge generation agent electrophotographic photoconductors and method for making same | Yoichi Nakamura, Kazumi Egota, Makoto Miyazawa | 1999-05-18 |
| 5244467 | Method for production of polyphenylene sulfone fibers | Masao Umezawa, Shiro Imai | 1993-09-14 |
| 4954043 | Balance mechanism of an industrial robot | Mitsutoshi Yoshida, Hiroshi Okumura | 1990-09-04 |
| 4942091 | Polyphenylene sulfone fibers and a method for production thereof | Masao Umezawa, Shiro Imai | 1990-07-17 |
| 4803895 | Balancing mechanism | Shunichi Nishizawa, Takashi Chikura | 1989-02-14 |
| 4698568 | Antiexplosion structure in a working robot | Shun-ichi Nishizawa, Takashi Chikura | 1987-10-06 |