Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5912306 | Cationic compounds useful as drainage aids and stabilizers for rosin-based sizing agents | Brian M. Stubbs, Malcolm J. Welch | 1999-06-15 |
| 5393338 | Cationic compounds useful as drainage aids and stabilizers for rosin-based sizing agents | Brian M. Stubbs, Malcolm J. Welch | 1995-02-28 |