Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4484631 | Use of polyampholytes to enhance oil and/or gas recovery | Nancy S. Sherwood, Christine A. Costello | 1984-11-27 |
| 4460477 | Use of a carboxylic functional polyampholyte to inhibit the precipitation and deposit of scale in aqueous systems | Christine A. Costello | 1984-07-17 |