Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4994647 | Covered electrode for use in arc welding of Cr-Mo type low alloy steels | Osamu Tanaka, Akinobu Goto | 1991-02-19 |
| 4503129 | Shielded metal arc welding electrode for Cr-Mo low alloy steels | Naoki Okuda, Akihiko Usui, Shigeaki Yamamoto | 1985-03-05 |