Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5610221 | Tire tread composition comprising highly reinforcing reinforced amorphous precipitated silica | Walter H. Waddell, Larry R. Evans | 1997-03-11 |
| 5605569 | Precipitated silica having high sodium sulfate content | James L. Boyer, Harold E. Swift, Robert C. Wang | 1997-02-25 |
| 5605950 | Tire tread composition comprising highly reinforcing reinforced amorphous precipitated silica | Larry R. Evans, Walter H. Waddell | 1997-02-25 |