DN

Douglas G. Naae

Chevron: 17 patents #241 of 4,788Top 6%
Overall (All Time): #277,138 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10501677 Surfactant compositions Gregory A. Winslow, Varadarajan Dwarakanath, Taimur Malik, Gayani Pinnawala Arachchilage 2019-12-10
9181505 Integrated biofuel process James F. Stevens, Mukund Karanjikar, Kerry K. Spilker, Dennis P. Essl, Peter C. Ricci +5 more 2015-11-10
8894818 Process for generating a hydrocarbon feedstock lignin William L. Schinski, Alexander E. Kuperman, Jinyi Han 2014-11-25
8795472 Process for generating a hydrocarbon feedstock from lignin William L. Schinski, Alexander E. Kuperman, Jinyi Han 2014-08-05
6207808 Catalytic method for the preparation of lignin phenol surfactants in organic solvents Lawrence E. Whittington, Dan Edward Kieke 2001-03-27
6100385 Catalytic method for the preparation of lignin phenol surfactants in organic solvents Lawrence E. Whittington, Dan Edward Kieke 2000-08-08
5230814 Hydrocarbon recovery comprising injecting a slug comprising oil soluble alkoxylated surfactants from lignin Michael G. DaGue, Nancy G. Dunn 1993-07-27
5169559 Method for forming a high viscosity gel Lawrence E. Whittington 1992-12-08
5100567 Shear-thickening solutions with hydroxypropyl cellulose Lawrence E. Whittington 1992-03-31
5095985 Enhance oil recovery using oil soluble sulfonate surfactants from lignin and alkylphenol Centha A. Davis 1992-03-17
5095986 Enhanced oil recovery using oil soluble sulfonates from lignin and benzyl alcohol Centha A. Davis 1992-03-17
5076361 Gel method for decreasing permeability around a wellbore Lawrence E. Whittington 1991-12-31
5035288 Lignin phenol/lignin/amine surfactant system Dan Edward Kieke 1991-07-30
5027898 Foaming agents for carbon dioxide and steam floods 1991-07-02
4787454 Recovering hydrocarbons with surfactants from lignin Lawrence E. Whittington, Will A. Ledoux, Francis E. Debons 1988-11-29
4781251 Recovering hydrocarbons with water soluble alkylphenol lignin surfactants Francis E. Debons 1988-11-01
4739040 Surfactants from lignin Lawrence E. Whittington, Will A. Ledoux, Francis E. Debons 1988-04-19