P

Inventor

DWARAKANATH VARADARAJAN

US57 patents
⚠️ This page may combine multiple inventors who share the name “DWARAKANATH VARADARAJAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHEVRON USA INC

44 patents
US9909053B2Mar 6, 2018

Polymer compositions

CHEVRON USA INC34 citations97
US9902894B2Feb 27, 2018

Polymer compositions

CHEVRON USA INC34 citations97
US9896617B2Feb 20, 2018

Polymer compositions

CHEVRON USA INC35 citations97
US9976072B2May 22, 2018

Multicarboxylate compositions and method of making the same

CHEVRON USA INC43 citations96
US7770641B2Aug 10, 2010

Method for enhancing oil recovery with an improved oil recovery surfactant

CHEVRON USA INC78 citations96
US9902895B2Feb 27, 2018

Polymer compositions

CHEVRON USA INC33 citations93
US9617464B2Apr 11, 2017

Mixed carbon length synthesis of primary guerbet alcohols

CHEVRON USA INC43 citations93
US9605198B2Mar 28, 2017

Mixed carbon length synthesis of primary Guerbet alcohols

CHEVRON USA INC43 citations91
US9752071B2Sep 5, 2017

Composition and method for remediation of near wellbore damage

CHEVRON USA INC21 citations90
US10011757B2Jul 3, 2018

Method for remediation of damage in regions of formations near injection wells

CHEVRON USA INC16 citations89
US10626320B2Apr 21, 2020

Methods for hydrocarbon recovery

CHEVRON USA INC7 citations83
US10233382B2Mar 19, 2019

Method of using multicarboxylate compositions in enhanced oil recovery

CHEVRON USA INC6 citations83
US10337303B2Jul 2, 2019

Enhanced oil recovery compositions and methods thereof

CHEVRON USA INC7 citations82
US10197489B2Feb 5, 2019

Processes and systems for characterizing and optimizing fracturing fluids

CHEVRON USA INC16 citations82
US10677706B2Jun 9, 2020

Processes and systems for characterizing and optimizing fracturing fluids

CHEVRON USA INC6 citations80
US11084973B2Aug 10, 2021

Methods for hydrocarbon recovery

CHEVRON USA INC2 citations72
US10619087B2Apr 14, 2020

Methods for hydrocarbon recovery

CHEVRON USA INC3 citations72
US12012547B2Jun 18, 2024

Olefin sulfonate compositions

CHEVRON USA INC2 citations71
US11834609B2Dec 5, 2023

Injection fluids for stimulating fractured formations

CHEVRON USA INC2 citations71
US11760921B2Sep 19, 2023

Injection fluids comprising a non-ionic surfactant for treating unconventional formations

CHEVRON USA INC1 citations71
US11753582B2Sep 12, 2023

Injection fluids comprising an anionic surfactant for treating unconventional formations

CHEVRON USA INC3 citations71
US11248160B2Feb 15, 2022

Compositions for use in oil and gas operations

CHEVRON USA INC1 citations71
US10851629B2Dec 1, 2020

Enhanced oil recovery compositions and methods thereof

CHEVRON USA INC4 citations71
US10436693B2Oct 8, 2019

Portable apparatus and methods for analyzing injection fluids

CHEVRON USA INC5 citations70
US10168265B2Jan 1, 2019

Portable apparatus and methods for analyzing injection fluids

CHEVRON USA INC5 citations70
US11261300B2Mar 1, 2022

Methods and systems for generating aqueous polymer solutions

CHEVRON USA INC1 citations69
US9810049B2Nov 7, 2017

Systems and methods for inline chemical injection for dump flood water injectors

CHEVRON USA INC5 citations68
US12378464B2Aug 5, 2025

Methods for hydrocarbon recovery

CHEVRON USA INC0 citations62
US12371606B2Jul 29, 2025

Methods for hydrocarbon recovery

CHEVRON USA INC0 citations62
US12275893B2Apr 15, 2025

Methods for hydrocarbon recovery

CHEVRON USA INC0 citations62
US12247162B2Mar 11, 2025

Methods for hydrocarbon recovery

CHEVRON USA INC0 citations62
US12286588B2Apr 29, 2025

Polyanionic surfactants and methods of making and using thereof

CHEVRON USA INC0 citations61
US11248159B2Feb 15, 2022

Method of using multicarboxylate compositions in enhanced oil recovery

CHEVRON USA INC0 citations61
US12577451B2Mar 17, 2026

Polyanionic surfactants and methods of making and using thereof

CHEVRON USA INC0 citations60
US12435262B2Oct 7, 2025

Injection fluids comprising an anionic surfactant for treating unconventional formations

CHEVRON USA INC0 citations60
US12331245B2Jun 17, 2025

Use of a borate-acid buffer in oil and gas operations

CHEVRON USA INC0 citations60
US11884879B2Jan 30, 2024

Compositions for use in oil and gas operations

CHEVRON USA INC0 citations60
US11787998B2Oct 17, 2023

Use of a borate-acid buffer in oil and gas operations

CHEVRON USA INC0 citations60
US11739254B2Aug 29, 2023

Methods for use in oil and gas operations

CHEVRON USA INC0 citations60
US11377586B2Jul 5, 2022

Use of a borate-acid buffer in oil and gas operations

CHEVRON USA INC0 citations60
US11008502B2May 18, 2021

Methods for preparing an aqueous surfactant-polymer solution

CHEVRON USA INC0 citations60
US12528982B2Jan 20, 2026

Compositions and methods for breaking foams and emulsions

CHEVRON USA INC0 citations59
US11898100B2Feb 13, 2024

Compositions and methods for breaking foams and emulsions

CHEVRON USA INC0 citations59
US10822539B2Nov 3, 2020

Methods for hydrocarbon recovery

CHEVRON USA INC0 citations51

CHEVRON ORONITE CO

2 patents

WINSLOW GREGORY

1 patent

CAMPBELL CURTIS B

1 patent

DWARAKANATH VARADARAJAN

1 patent

KEMIRA OYJ

1 patent

Showing the top 50 of 57 patents by PatentIndex Score.