Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5202013 | Process for coloring metal surfaces | Bryn Chamberlain, Harry Sang, Prasad S. Apte, Lorne D. Kenny | 1993-04-13 |
| 4756772 | Method of coloring a porous anodic oxide film on the surface of an aluminum article | Jose L. Gazapo | 1988-07-12 |