Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5721145 | Method of making a semiconductor substrate having gettering effect | Kenji Kusakabe, Masahiro Sekine | 1998-02-24 |
| 5419786 | Semiconductor substrate for bipolar element | Kenji Kusakabe | 1995-05-30 |
| 5381032 | Semiconductor device having a gate electrode of polycrystal layer and a method of manufacturing thereof | Tohru Koyama, Kenji Kusakabe, Katsuhiko Tamura, Yasuna Nakamura | 1995-01-10 |
| 5221630 | Method of manufacturing semiconductor device having a two layered structure gate electrode | Tohru Koyama, Katsuhiko Tamura, Yasuna Nakamura, Kenji Kusakabe | 1993-06-22 |
| 5177569 | Semiconductor device having a two layered structure gate electrode | Tohru Koyama, Katsuhiko Tamura, Yasuna Nakamura, Kenji Kusakabe | 1993-01-05 |