Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873020 | Fluorochemical surfactants and process for preparing same | — | 1989-10-10 |
| 4822373 | Process for providing polyamide materials with stain resistance with sulfonated novolak resin and polymethacrylic acd | Maynard H. Olson, John C. H. Chang | 1989-04-18 |