Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835056 | Conductive fiber and method for making same | John H. Sanders, Joe A. Mann | 1989-05-30 |
| 4806227 | Carbon black inhibition of pitch polymerization | Alvin F. Beale, Jr. | 1989-02-21 |