Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861453 | Corrosion detecting probe for steel buried in concrete | Kazumi Matsuoka, Hiroshi Kihira, Satoshi Ito | 1989-08-29 |
| 4806849 | Method and apparatus for diagnosing degradation of coating film on metal material | Hiroshi Kihira, Satoshi Ito, Shunji Sakamoto, Kazuo Yamamoto | 1989-02-21 |