Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6627693 | Elastomeric compositions having improved appearance | Michael Thomas Curtin | 2003-09-30 |
| 5426147 | Low permeability rubber compositions | David C. Novakoski | 1995-06-20 |
| 5393821 | Carbon blacks | Chiung-Huei Shieh, William A. Farr, Thomas E. McElwain, Roscoe W. Taylor, William J. Patterson +2 more | 1995-02-28 |
| 5382621 | Skim compounds incorporating low ash carbon blacks | — | 1995-01-17 |