Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4863884 | Method for rejuvenating used catalysts | John Milligan | 1989-09-05 | |
| 4769219 | Catalyst rejuvenation vessel assembly | John Milligan | 1988-09-06 | $2,338,000 |