Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9796919 | Encapsulation of an acid precursor for oil field applications | Yun Chang, Curt Thies | 2017-10-24 |
| 9580639 | Controlled release of surfactants for enhanced oil recovery | Yun Chang | 2017-02-28 |