Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5247239 | Dual DC/DC voltage converter power system | Norihisa Yamamura, Kotaro Okada | 1993-09-21 |
| 5233508 | DC/DC voltage converting device | Norihisa Yamamura, Kotaro Okada | 1993-08-03 |
| 5153451 | Fail safe level shifter | Norihisa Yamamura, Tatsuo Hayakawa | 1992-10-06 |