Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861453 | Corrosion detecting probe for steel buried in concrete | Kazumi Matsuoka, Satoshi Ito, Tomomi Murata | 1989-08-29 |
| 4806849 | Method and apparatus for diagnosing degradation of coating film on metal material | Satoshi Ito, Tomomi Murata, Shunji Sakamoto, Kazuo Yamamoto | 1989-02-21 |
| 4800165 | Method of detecting corrosion rate of member of steel material | Tomoki OKA, Kazumi Matsuoka, Satoshi Ito | 1989-01-24 |