Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4720018 | Scoring arrangement for a tamper-indicating plastic closure | Michael Corcoran | 1988-01-19 |
| 4666053 | Tamper-indicating plastic closure | Michael Corcoran, James Bennington Stopher | 1987-05-19 |
| 4664280 | Composite closure | Ralph H. Whitney, Sheldon L. Wilde, Daniel G. Denman | 1987-05-12 |