Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874588 | Method and apparatus for rapidly dissolving polymers in water | Edwin T. Sortwell, Manuel Slovinsky | 1989-10-17 |
| 4845192 | Method of rapidly dissolving polymer gels in water | Edwin T. Sortwell | 1989-07-04 |