Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4782207 | Electrode roll | Shunsuke Masuda, Masatoshi Yamamoto, Hiroyuki Kato, Yasushi Kawai | 1988-11-01 |
| 4642437 | Electrode roll for electric resistance welding | Masatoshi Yamamoto, Yasushi Kawai, Hiroyuki Kato, Shunsuke Masuda | 1987-02-10 |