Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6022947 | Light-colored, low molecular weight phenolic-modified rosin esters | Charles R. Frihart, Brett Neumann | 2000-02-08 |
| 5019167 | Stabilized rosin esters and hot melt adhesives containing them | Robert W. Johnson | 1991-05-28 |
| 4477613 | Stabilization of tackifying resin dispersions | James M. Evans, Keijo Ukkonen, James E. Hansen | 1984-10-16 |