Issued Patents 2025
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12371619 | Polyanionic surfactants and methods of making and using thereof | Gayani W. Pinnawala, Sujeewa S. Palayangoda, Varadarajan Dwarakanath | 2025-07-29 |
| 12331245 | Use of a borate-acid buffer in oil and gas operations | Nabijan Nizamidin, Gayani W. Pinnawala, Guo-Qing Tang, Varadarajan Dwarakanath, Jordan Taylor Isbell +1 more | 2025-06-17 |
| 12312534 | Treating fluid comprising hydrocarbons, water, and polymer | Sumitra Subrahmanyan, Gayani W. Pinnawala, Sophany Thach, Dennis Arun Alexis, Harold C. Linnemeyer +3 more | 2025-05-27 |
| 12286588 | Polyanionic surfactants and methods of making and using thereof | Gayani W. Pinnawala, Sujeewa S. Palayangoda, Varadarajan Dwarakanath | 2025-04-29 |
| 12215276 | Ph control in fluid treatment | Sujeewa S. Palayangoda, Kerry K. Spilker, Sumitra Subrahmanyan, Gayani W. Pinnawala, Sophany Thach +5 more | 2025-02-04 |