Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5468480 | Pharmaceutical composition of purified chymopapain | David John Buttle, Daniel H. Rich | 1995-11-21 |
| 5380656 | Chymopapain and method of purifying it on an inhibitory dipeptide affinity column | David John Buttle, Daniel H. Rich | 1995-01-10 |