Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11414586 | Branched acid emulsifier compositions and methods of use | Yiyan Chen | 2022-08-16 |
| 11377579 | Alkyl cyclic anhydride based emulsifiers for oil based mud | Yiyan Chen, Reda Karoum | 2022-07-05 |