Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4958057 | Transfer-type plasma torch with ring-shaped cathode and with processing gas passage provide interiorly of the cathode | Hiroshi Shiraishi, Nobuo Tajima, Tsuyoshi Shinoda | 1990-09-18 |