Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4245517 | Method and apparatus for measuring modulus of a plastic polymer | Robert I. Barker | 1981-01-20 |
| 4229970 | Method and apparatus for measuring the rheological properties of an extrudable material | Robert I. Barker, David P. King | 1980-10-28 |