Lawrence E. Whittington
22Patents
11h-index
18Co-inventors
72Inventor score
Filing activity: Dec 22, 1977 → Jun 5, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6100385A | Catalytic method for the preparation of lignin phenol surfactants in organic solvents | Chemistry; Metallurgy | 32 | Expired |
| US4739040A | Surfactants from lignin | Chemistry; Metallurgy | 30 | Expired |
| US6207808A | Catalytic method for the preparation of lignin phenol surfactants in organic solvents | Chemistry; Metallurgy | 21 | Expired |
| US4790382A | Alkylated oxidized lignins as surfactants | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4787454A | Recovering hydrocarbons with surfactants from lignin | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4739041A | Alkylated oxidized lignins as surfactants | Chemistry; Metallurgy | 16 | Expired |
| US4277352A | Demulsification of emulsions produced from surfactant recovery operations and recovery of surfactants therefrom | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5114599A | Use of lignin/amine/surfactant blends in enhanced oil recovery | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4822501A | Use of lignin/amine/surfactant blends in enhanced oil recovery | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4548721A | Method of enhanced oil recovery and compositions useful therein | Chemistry; Metallurgy | 12 | Expired |
| US4319636A | Surfactant waterflood oil recovery process | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5100567A | Shear-thickening solutions with hydroxypropyl cellulose | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4276933A | Surfactant waterflood method for the recovery of oil | Fixed Constructions | 10 | Expired |
| US4159037A | High conformance oil recovery process | Chemistry; Metallurgy | 10 | Expired |
| US5169559A | Method for forming a high viscosity gel | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4299284A | High sweep efficiency enhanced oil recovery process | Fixed Constructions | 7 | Expired |
| US4721161A | Method for decreasing permeability around a wellbore | Chemistry; Metallurgy | 7 | Expired |
| US4161218A | High conformance enhanced oil recovery process | Fixed Constructions | 6 | Expired |
| US4161982A | High conformance enhanced oil recovery process | Fixed Constructions | 6 | Expired |
| US5076361A | Gel method for decreasing permeability around a wellbore | Chemistry; Metallurgy | 6 | Expired |
| US4193900A | Fire carcass resilient rubber compositions | Chemistry; Metallurgy | 5 | Expired |
| US4281714A | Lithium salts as additives in petroleum recovery processes | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.