Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645859 | Process for producing an alpha or beta-hydroxy acid-vinylpyrrolidone polymer, copolymer or graft polymer complex in the form of free-flowing powders having a high acid loading | Ratan K. Chaudhuri, Russell B. Biss | 1997-07-08 |
| 5631273 | Synergistic water soluble preservative compositions of biocidal mixtures | — | 1997-05-20 |