Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5225527 | Modified colophony resins, a process for their preparation, their use and paper-sizing agents containing colophony resins of this type | Johannes Fallmann, Wolfgang Streicher | 1993-07-06 |
| 4540635 | Modified colophony rosins, a process for their preparation, their use and paper-sizing agents containing such modified colophony rosins | Erhard Prantz, Wolfgang Schoerkhuber | 1985-09-10 |