Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5221821 | Method for producing an extruder barrel assembly | Michael Burns, William A. Kramer, Edward J. McGrady | 1993-06-22 | $8,144,000 |
| 5068406 | Compartmented oxidation method | Juergen K. Holzhauer, Aubrey C. Reeve | 1991-11-26 | $18,710,000 |
| 4828020 | Internal finned heater-cooler for an extruder barrel | Paul J. Guhl | 1989-05-09 | $1,171,000 |
| 4587355 | Oxidation with a solid catalyst | John G. Hundley | 1986-05-06 | $42,089,000 |