Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849503 | Novel poly(aryl ethers) | Robert J. Cotter, Robert Barclay, Jr., George T. Kwiatkowski, James E. Harris | 1989-07-18 |
| 4814419 | Polyarylether sulfones useful for molding into a circuit board substrate | Robert J. Cotter, Robert Barclay, Jr. | 1989-03-21 |