Issued Patents All Time
Showing 51–51 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4574144 | Sulfonated polyimides and polyamic acids and method for their preparation | David J. Smith | 1986-03-04 |
Showing 51–51 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4574144 | Sulfonated polyimides and polyamic acids and method for their preparation | David J. Smith | 1986-03-04 |