Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7836784 | Motor-operated valve diagnosing device | Shigeya Yamaguchi | 2010-11-23 |
| 7769563 | Method and apparatus for diagnosis of motor-operated valve | Shigeya Yamaguchi | 2010-08-03 |
| 7739923 | Torque measuring method and apparatus for motor-operated valve | Shigeya Yamaguchi | 2010-06-22 |
| 7596457 | Electrically operated valve diagnosing method and diagnosing apparatus | Shigeya Yamaguchi | 2009-09-29 |
| 7516656 | Method and apparatus for diagnosing motor-operated valve | Shigeya Yamaguchi | 2009-04-14 |
| 5224512 | Valve stem driving apparatus | Kunio Matsushita, Susumu Watanabe, Yuzo Hashimoto | 1993-07-06 |