Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7057792 | Optical sensor unit for measuring current and voltage of high frequency | Yutaka Kadogawa, Naoji Moriya | 2006-06-06 |
| 5181668 | Apparatus for running a wire through a pipe | Koichi Hosoya, Fumio Tsukimoto, Tatsuya Ashida, Katsuyuki Okubo, Tetsuo Bokuhara +1 more | 1993-01-26 |
| 4593722 | Sealant for internally sealing pipeline | Mitsuo Yamamoto, Namio Kinumoto, Tutomu Hiraoka | 1986-06-10 |
| 4554178 | Method of internally coating pipeline | Mitsuo Yamamoto, Namio Kinumoto, Tutomu Hiraoka | 1985-11-19 |