Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778057 | Inductor for heating inner-circumference of hole | — | 2004-08-17 |
| 5875954 | Bonded pipe and method for bonding pipes | Shinsuke Kishi, Michio Sato | 1999-03-02 |
| 5397876 | High frequency bolt heater having induction heating coil | Takijiro Shimamoto, Yoji Morita, Ichiro Shimasaki, Ichiro Matsuura | 1995-03-14 |
| 4694131 | Induction heating method and apparatus for relieving residual stress in welded joint between main and branch pipes | Toshio Ino, Kazuo Yoshida, Masanori Terasaki, Tetsusho Kuriwaki, Tadao Koga +1 more | 1987-09-15 |
| 4687894 | Induction heating method and apparatus for relieving residual stress in welded joints in pipe line | Tadao Koga, Mitsuru Sugimori, Masanori Terasaki, Satoru Tsushima, Kazuo Yoshida +2 more | 1987-08-18 |