Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4329315 | Sheet stress relaxation | Harold H. Hopfe | 1982-05-11 |
| 4226818 | Production of polyvinylbutyral sheet rolls | Robert A. Esposito, Thomas E. Soar | 1980-10-07 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4329315 | Sheet stress relaxation | Harold H. Hopfe | 1982-05-11 |
| 4226818 | Production of polyvinylbutyral sheet rolls | Robert A. Esposito, Thomas E. Soar | 1980-10-07 |