Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861453 | Corrosion detecting probe for steel buried in concrete | Hiroshi Kihira, Satoshi Ito, Tomomi Murata | 1989-08-29 |
| 4800165 | Method of detecting corrosion rate of member of steel material | Tomoki OKA, Hiroshi Kihira, Satoshi Ito | 1989-01-24 |