Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886951 | Power supply for a magnetron having a rectifying circuit, switching circuit, and transformer | Takahiro Matsumoto, Haruo Suenaga, Naoyoshi Maehara, Kazuho Sakamoto, Takashi Niwa +2 more | 1989-12-12 |
| 4870031 | Method of manufacturing a semiconductor device | Kazuyuki Sugahara, Tadashi Nishimura, Yasuo Inoue | 1989-09-26 |
| 4861418 | Method of manufacturing semiconductor crystalline layer | Tadashi Nishimura, Yasuo Inoue, Kazuyuki Sugahara | 1989-08-29 |
| 4851629 | High-frequency heating device | Daisuke Bessyo, Naoyoshi Maehara, Kazuho Sakamoto, Takahiro Matsumoto | 1989-07-25 |
| 4845537 | Vertical type MOS transistor and method of formation thereof | Tadashi Nishimura, Kazuyuki Sugahara, Akihiko Ohsaki | 1989-07-04 |
| 4822752 | Process for producing single crystal semiconductor layer and semiconductor device produced by said process | Kazuyuki Sugahara, Tadashi Nishimura, Yasuo Inoue | 1989-04-18 |
| 4812960 | Power feeding apparatus | Kazuho Sakamoto, Takao Shitaya, Naoyoshi Maehara, Takashi Niwa, Takahiro Matsumoto +1 more | 1989-03-14 |