Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11408776 | Power supply device, and method for detecting opening of exhaust valve of power supply device | Masashi Okumura | 2022-08-09 |
| 7729221 | Optical disk discrimination method and optical disk device | Hiroshi Tsuji, Yoshiro Kashiwabara, Shingo Sagata | 2010-06-01 |