Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738371 | As-rolled type K55 electric resistance welded oil well pipe and hot-rolled steel sheet | Tetsuo Ishitsuka, Takashi TSUSUE, Shunichi Kobayashi, Toshiyuki Ogata, Osamu Yoshida +1 more | 2020-08-11 |
| 10640843 | High strength electric resistance welded steel pipe and method for producing high strength electric resistance welded steel pipe | Tetsuo Ishitsuka, Takashi TSUSUE, Shunichi Kobayashi, Osamu Yoshida, Hideto Kawano | 2020-05-05 |
| 4632744 | Device for metal strip electrolytic processing | Shinjiro Murakami, Hiroshi Horyoda, Tetsuya Kohama, Tamotsu Mizuta, Shinjiro Ishikawa +1 more | 1986-12-30 |