Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665630 | Device separation structure and semiconductor device improved in wiring structure | Keiji Ishizuka, Yuzo Kataoka, Hidekazu Takahashi, Hayao Ohzu | 1997-09-09 |
| 5614439 | Method of making a planar wiring in an insulated groove using alkylaluminum hydride | Fumio Murooka, Tetsuo Asaba, Shigeyuki Matsumoto, Osamu Ikeda, Yukihiko Sakashita +1 more | 1997-03-25 |
| 5517224 | Semiconductor device for driving heat generator | Shunichi Kaizu, Hiroyuki Nakamura, Kei Fujita, Seiji Kamei | 1996-05-14 |
| 5514989 | Semiconductor light emitting element driver circuit | Toshiaki Sato, Keiji Ishizuka, Shunichi Morita, Shunichi Kaizu | 1996-05-07 |
| 5364802 | Method of making a semiconductor device with buried electrode | Yuzo Kataoka, Keiji Ishizuka, Tetsuo Asaba | 1994-11-15 |
| 5306934 | Semiconductor device with buried electrode | Yuzo Kataoka, Keiji Ishizuka, Tetsuo Asaba | 1994-04-26 |
| 5216447 | Recording head | Kei Fujita, Hiroshi Nakano | 1993-06-01 |
| 5200639 | Semiconductor device with isolating groove containing single crystalline aluminum wiring | Keiji Ishizuka, Yuzo Kataoka, Hidekazu Takahashi, Hayao Ohzu | 1993-04-06 |
| 4717891 | Phase locked loop circuit having temperature compensated VCO control voltage | Tsuguhide Sakata, Hisashi Kawai | 1988-01-05 |