Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4964955 | Method of reducing pitch in pulping and papermaking operations | William E. Pratt, Kenneth E. Weber, Robert E. Roeder | 1990-10-23 |
| 4755501 | Color developing composition for carbonless paper copying system | Yew C. Chang | 1988-07-05 |
| 4400485 | Rubber composition | Harold Mukamal, Laurence E. Ferreira | 1983-08-23 |
| 4391733 | Mineral treatment and composition | Laurence E. Ferreira, Robert C. Cloud | 1983-07-05 |
| 4391734 | Mineral treatment and composition | Laurence E. Ferreira, Ralph J. Bertolacini | 1983-07-05 |