Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5723089 | Line pipe metal arc welded with wire alloy | Rikio Chijiiwa, Hiroyuki Ogawa, Yoshinori Ogata, Hiroshi Tamehiro, Hajime Ishikawa +2 more | 1998-03-03 |
| 5550347 | Method of reducing welding distortion in one side welding for joining plates | Tadashi Kasuya, Yukihiko Horii, Tateo Miyazaki | 1996-08-27 |
| 5175405 | Method of automatically welding rails | Kenichi Karimine, Makoto Okumura, Nobuyuki Aoki, Kazuo Nagatomo, Hirohisa Fujiyama | 1992-12-29 |
| 4566916 | Low-hydrogen, low-nitrogen, low-oxygen welding flux | Kyoichi Nagano, Hiroshi Naganuma, Motonori Tamura, Shigenobu Soneda | 1986-01-28 |