Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861453 | Corrosion detecting probe for steel buried in concrete | Kazumi Matsuoka, Hiroshi Kihira, Tomomi Murata | 1989-08-29 |
| 4842945 | Stainless steel coated with thin film of carbon containing specified amount in a state of diamond and having an adjustable black transparent color tone | Wataru Ito | 1989-06-27 |
| 4831368 | Display apparatus with rotatable display screen | Tamon Masimo, Hiroshi Kanazawa, Hidefumi Masuzaki | 1989-05-16 |
| 4806849 | Method and apparatus for diagnosing degradation of coating film on metal material | Hiroshi Kihira, Tomomi Murata, Shunji Sakamoto, Kazuo Yamamoto | 1989-02-21 |
| 4800165 | Method of detecting corrosion rate of member of steel material | Tomoki OKA, Hiroshi Kihira, Kazumi Matsuoka | 1989-01-24 |