Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4225398 | Method of improving the corrosion resistance of an anodically oxidized surface film on aluminum articles | Hatsuo Hirono, Katsuyuki Nagata, Shinji Hayashi, Hiroshi Yamagata | 1980-09-30 |