Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889631 | Anodic aluminium oxide membranes | William R. Rigby, Anthony T. Thomas | 1989-12-26 |
| 4859288 | Porous anodic aluminum oxide films | William R. Rigby | 1989-08-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889631 | Anodic aluminium oxide membranes | William R. Rigby, Anthony T. Thomas | 1989-12-26 |
| 4859288 | Porous anodic aluminum oxide films | William R. Rigby | 1989-08-22 |