Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7776798 | Quaternary ammonium salts as thickening agents for aqueous systems | Shankar Subramanian, Cenk R. Burgazli, Yun-Peng Zhu, Shawn Zhu | 2010-08-17 |
| 7358215 | Quaternary ammonium salts as thickening agents for aqueous systems | Shankar Subramanian, Cenk R. Burgazli, Yun-Peng Zhu, Shawn Zhu | 2008-04-15 |
| 6828281 | Surfactant blends for aqueous solutions useful for improving oil recovery | Wangqi Hou | 2004-12-07 |