Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4937123 | Process for providing polyamide materials with stain resistance | John C. H. Chang, Imelda A. Muggli | 1990-06-26 | $5,087,000 |
| 4822373 | Process for providing polyamide materials with stain resistance with sulfonated novolak resin and polymethacrylic acd | John C. H. Chang, Imelda A. Muggli | 1989-04-18 | $3,457,000 |
| 4484990 | Mist suppressant for solvent extraction metal electrowinning | David Alan Bultman | 1984-11-27 | $4,320,000 |