Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780388 | Electrically conducting fine carbon composite powder, catalyst for polymer electrolyte fuel battery and fuel battery | Tsutomu Masuko | 2004-08-24 |
| 4649414 | PNPN semiconductor switches | Jun Ueda, Hirokazu Tsukada | 1987-03-10 |