Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6895681 | Method and instrument for measuring inside diameter of conduit | Yasushi Yonemura, Ryuji Sakasai | 2005-05-24 |
| 6123027 | Self-propelled vehicle within pipe | Seiji Mizukami, Toshihide Kawabe, Yoshio Ido | 2000-09-26 |
| 6008658 | Method for inspecting the elements of piping systems by electromagnetic waves | Takashi Imaoka | 1999-12-28 |
| 6008657 | Method for inspecting the elements of piping systems by electromagnetic waves | Takashi Imaoka | 1999-12-28 |
| 6005396 | Method for inspecting the elements of piping systems by electromagnetic waves | Takashi Imaoka | 1999-12-21 |
| 5990690 | Method for inspecting the elements of piping systems BT electromagnetic waves | Takashi Imaoka | 1999-11-23 |
| 5966016 | Method for inspecting the elements of piping systems by electromagnetic waves | Takashi Imaoka | 1999-10-12 |
| 5963042 | Method for inspecting the elements of piping systems by electromagnetic waves | Takashi Imaoka | 1999-10-05 |
| 5773984 | Method of inspecting abnormality occurring inside pipe and apparatus for practicing the method | Hajime Furusawa, Yasuharu Hosohara, Takashi Kobori | 1998-06-30 |
| 5736821 | Intrapipe work robot apparatus and method of measuring position of intrapipe work robot | — | 1998-04-07 |
| 5612625 | Method of measuring inner diameter of pipe | Hajime Furusawa, Yasuharu Hosohara, Takashi Kobori | 1997-03-18 |