Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4590346 | Method of heating piping arrangement and heating coil | Tsukasa Ikegami | 1986-05-20 |
| 4505763 | Heat-treating method of weld portion of piping system and heating coil for the heat treatment | Wataru Sagawa, Tsukasa Ikegami, Tasuku Shimizu | 1985-03-19 |