Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700307 | Die for press-molding optical elements | Yoshinari Kashiwagi, Makoto Umetani, Hidenao Kataoka, Shoji Nakamura, Satoru Morimoto | 1997-12-23 |
| 5694027 | Three-phase brushless self-excited synchronous generator with no rotor excitation windings | Satoru Satake, Yukio Onogi, Hideo Yamashita, Yukio Hosaka | 1997-12-02 |
| 5684641 | Objective lens and optical head apparatus using the objective lens | Yasuhiro Tanaka, Osamu Doi, Jun Murata, Michihiro Yamagata | 1997-11-04 |
| 5598091 | Three-phase brushless self-excited synchronous generator with no rotor exciting windings | Satoru Satake, Yukio Hosaka, Yukio Onogi | 1997-01-28 |