Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6049097 | Reliable HEMT with small parasitic resistance | — | 2000-04-11 |
| 6025612 | NAND or NOR compound semiconductor memory | — | 2000-02-15 |
| 6023079 | Compound semiconductor memory with floating gate | — | 2000-02-08 |
| 5686740 | Field effect transistor with recessed gate | — | 1997-11-11 |
| 5448086 | Field effect transistor | — | 1995-09-05 |
| 5442227 | Field effect transistor having a low threshold voltage shift | Muneo Fukaishi | 1995-08-15 |
| 5111256 | High speed semiconductor device and an optelectronic device | Keiichi Ohata | 1992-05-05 |
| 5043776 | Semiconductor device having compound semiconductor FET of E/D structure with high margin | — | 1991-08-27 |
| 4980731 | Atomic planar-doped field-effect transistor | — | 1990-12-25 |
| 4839703 | High speed and power transistor | Keiichi Ohata, Masaki Ogawa | 1989-06-13 |
| 4807001 | Heterojunction field-effect device | — | 1989-02-21 |
| 4727403 | Double heterojunction semiconductor device with injector | Keiichi Ohata | 1988-02-23 |