Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 12391867 | Olefin sulfonates | Andrew Michael Thomas, Curtis B. Campbell, Gayani W. Pinnawala, Varadarajan Dwarakanath, Andrew M. Davidson | 2025-08-19 | |
| 12012547 | Olefin sulfonate compositions | Gayani W. Pinnawala, Varadarajan Dwarakanath, Andrew Michael Thomas, Curtis B. Campbell, Andrew M. Davidson | 2024-06-18 | $368,304,000 |
| 12012549 | Methods of using olefin sulfonates | Varadarajan Dwarakanath, Gayani W. Pinnawala, Andrew Michael Thomas, Curtis B. Campbell, Andrew M. Davidson | 2024-06-18 | $368,304,000 |
| 9745259 | Process for preparing alcohol ether sulfates | Curtis B. Campbell | 2017-08-29 | $317,910,000 |
| 8703641 | Hydroconversion multi-metallic catalyst and method for making thereof | Alexander E. Kuperman, Theodorus Ludovicus Michael Maesen, Dennis Dykstra, Soy Uckung | 2014-04-22 | $52,754,000 |