Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5381032 | Semiconductor device having a gate electrode of polycrystal layer and a method of manufacturing thereof | Yoshiko Kokawa, Tohru Koyama, Kenji Kusakabe, Katsuhiko Tamura | 1995-01-10 |
| 5221630 | Method of manufacturing semiconductor device having a two layered structure gate electrode | Tohru Koyama, Katsuhiko Tamura, Yoshiko Kokawa, Kenji Kusakabe | 1993-06-22 |
| 5177569 | Semiconductor device having a two layered structure gate electrode | Tohru Koyama, Katsuhiko Tamura, Yoshiko Kokawa, Kenji Kusakabe | 1993-01-05 |