Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4440584 | Method and apparatus for cooling steel sheet | Kenji Hirabe, Yukifumi Ogawa, Kazuyoshi Arikata, Kazunori Yako, Kenichi Sakai +2 more | 1984-04-03 |
| 4341938 | Method and apparatus for seam-welding steel pipes | Hiroyoshi Matsubara, Tatsumi Osuka, Takashi Nagamine, Osamu Hirano, Jinkichi Tanaka +2 more | 1982-07-27 |
| 4238659 | Preventing magnetization of pipe blank in GMA welding | Fusao Koshiga, Jinkichi Tanaka, Itaru Watanabe, Motoaki Suzuki, Toshifumi Kojima +4 more | 1980-12-09 |