Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5175681 | Computerized system for managing preparation and prosecution of applications in various countries for protection of industrial property rights | Takeyuki Iwai, Shigeyuki Yoneyama, Reikichi Fujii, Shigeru Miyauchi | 1992-12-29 |
| 4772336 | Method of improving residual stress in circumferential weld zone | Kunio Enomoto, Tasuku Shimizu, Shinji Sakata, Terunobu Koike, Nobuo Shimizu | 1988-09-20 |
| 4590346 | Method of heating piping arrangement and heating coil | Isao Sugihara | 1986-05-20 |
| 4505763 | Heat-treating method of weld portion of piping system and heating coil for the heat treatment | Isao Sugihara, Wataru Sagawa, Tasuku Shimizu | 1985-03-19 |