Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885937 | Flow sensor | Nobuyuki Tanaka, Masaya Hijikigawa, Shoei Kataoka | 1989-12-12 |
| 4859060 | Variable interferometric device and a process for the production of the same | Masayuki Katagiri, Masanori Watanabe, Kazutaka Uda, Masaya Hijikigawa, Shuhei Tsuchimoto | 1989-08-22 |