Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822847 | Method of increasing viscosity of an aqueous solution with a sulfo betaine polymer | Donald N. Schulz | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822847 | Method of increasing viscosity of an aqueous solution with a sulfo betaine polymer | Donald N. Schulz | 1989-04-18 |