Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656911 | Circuit for driving permanent-magnet synchronous motor using proportional controller | Tomoharu NAKAYAMA, Koetsu Fujita, Shigenori Kinoshita, Takao Yanase, Masahiko Hanazawa +2 more | 1997-08-12 |
| 5602441 | Vacuum ionization gauging tube | Nobuharu Ohsako, Wakao Watanabe | 1997-02-11 |