VD

Varadarajan Dwarakanath

Chevron: 61 patents #35 of 4,788Top 1%
KO Kemira Oyj: 1 patents #176 of 376Top 50%
Overall (All Time): #48,405 of 4,157,543Top 2%
53
Patents All Time

Issued Patents All Time

Showing 1–25 of 53 patents

Patent #TitleCo-InventorsDate
12391867 Olefin sulfonates Andrew Michael Thomas, Curtis B. Campbell, Gayani W. Pinnawala, Andrew M. Davidson, Ping Wang 2025-08-19
12378464 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, David Espinosa, Taimur Malik, Logan Jackson +5 more 2025-08-05
12371606 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, David Espinosa, Taimur Malik, Logan Jackson +5 more 2025-07-29
12371619 Polyanionic surfactants and methods of making and using thereof Gayani W. Pinnawala, Sujeewa S. Palayangoda, Gregory A. Winslow 2025-07-29
12352149 Compositions containing friction reducers and methods of using thereof in oil and gas operations Gojko Matovic, Nabijan Nizamidin, Michael Ogechukwuka Unomah, Do Hoon Kim, Taimur Malik +3 more 2025-07-08
12331245 Use of a borate-acid buffer in oil and gas operations Nabijan Nizamidin, Gayani W. Pinnawala, Guo-Qing Tang, Gregory A. Winslow, Jordan Taylor Isbell +1 more 2025-06-17
12286588 Polyanionic surfactants and methods of making and using thereof Gayani W. Pinnawala, Sujeewa S. Palayangoda, Gregory A. Winslow 2025-04-29
12275893 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, David Espinosa, Taimur Malik, Logan Jackson +5 more 2025-04-15
12247162 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, David Espinosa, Taimur Malik, Logan Jackson +5 more 2025-03-11
12012549 Methods of using olefin sulfonates Gayani W. Pinnawala, Andrew Michael Thomas, Curtis B. Campbell, Andrew M. Davidson, Ping Wang 2024-06-18
12012547 Olefin sulfonate compositions Gayani W. Pinnawala, Andrew Michael Thomas, Curtis B. Campbell, Andrew M. Davidson, Ping Wang 2024-06-18
11905461 Methods for foam stimulation Taimur Malik, Lin Zuo, Jimin Daniel ZHOU, Nabijan Nizamidin, Gregory A. Winslow +2 more 2024-02-20
11898100 Compositions and methods for breaking foams and emulsions Gayani W. Pinnawala, Sujeewa S. Palayangoda, Mohamad SALMAN, Mohsen S. Tagavifar 2024-02-13
11884879 Compositions for use in oil and gas operations Dennis Arun Alexis, Gayani Pinnawala Arachchilage, Do Hoon Kim, Taimur Malik, Gregory A. Winslow +1 more 2024-01-30
11834609 Injection fluids for stimulating fractured formations Dustin L. Walker, Gayani W. Pinnawala, Nabijan Nizamidin, Guo-Qing Tang, Dustin J. LOWRY +2 more 2023-12-05
11787998 Use of a borate-acid buffer in oil and gas operations Nabijan Nizamidin, Gayani W. Pinnawala, Guo-Qing Tang, Gregory A. Winslow, Jordan Taylor Isbell +1 more 2023-10-17
11760921 Injection fluids comprising a non-ionic surfactant for treating unconventional formations Dustin L. Walker, Gayani W. Pinnawala, Nabijan Nizamidin, Guo-Qing Tang, Dustin J. LOWRY +2 more 2023-09-19
11753582 Injection fluids comprising an anionic surfactant for treating unconventional formations Dustin L. Walker, Gayani W. Pinnawala, Nabijan Nizamidin, Guo-Qing Tang, Dustin J. LOWRY +2 more 2023-09-12
11739254 Methods for use in oil and gas operations Dennis Arun Alexis, Gayani Pinnawala Arachchilage, Do Hoon Kim, Taimur Malik, Gregory A. Winslow +1 more 2023-08-29
11377586 Use of a borate-acid buffer in oil and gas operations Nabijan Nizamidin, Gayani W. Pinnawala, Guo-Qing Tang, Gregory A. Winslow, Jordan Taylor Isbell +1 more 2022-07-05
11299409 Polymer compositions and methods of use Logan Jackson, Thomas J. Lynch, Ronald Robinson, Frances Fournier, Hong Yang +5 more 2022-04-12
11261300 Methods and systems for generating aqueous polymer solutions Do Hoon Kim, Dennis Arun Alexis, David Espinosa, Taimur Malik, Peter G. New +2 more 2022-03-01
11248160 Compositions for use in oil and gas operations Dennis Arun Alexis, Gayani Pinnawala Arachchilage, Do Hoon Kim, Taimur Malik, Gregory A. Winslow +1 more 2022-02-15
11248159 Method of using multicarboxylate compositions in enhanced oil recovery Robert G. Shong, Gregory A. Winslow, Sophany Thach 2022-02-15
11084973 Methods for hydrocarbon recovery Do Hoon Kim, Dennis Arun Alexis, David Espinosa, Taimur Malik, Logan Jackson +5 more 2021-08-10