Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882405 | Terpolymers of acrylamide, alkylacrylamide and betaine monomers | Ilan Duvdevani, Jan Bock, Enock Berluche | 1989-11-21 |
| 4880436 | Method for controlling viscosity of organic liquid and compositions | Kissho Kitano, Ilan Duvdevani | 1989-11-14 |
| 4822847 | Method of increasing viscosity of an aqueous solution with a sulfo betaine polymer | Jeffrey J. Kaladas | 1989-04-18 |