Mark A. Plummer
28Patents
8h-index
13Co-inventors
72Inventor score
Filing activity: Jul 5, 1973 → Feb 24, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4723603A | Preventing plugging by insoluble salts in a hydrocarbon-bearing formation and associated production wells | Chemistry; Metallurgy | 95 | Expired |
| US6736961B2 | Removal of sulfur from a hydrocarbon through a selective membrane | Chemistry; Metallurgy | 28 | Expired |
| US6187172A | Viscosity reduction of crude oils and residuums | Chemistry; Metallurgy | 11 | Expired |
| US4013125A | Flooding with micellar dispersions containing petroleum sulfonates obtained by sulfonating whole or topped crude oil | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4147638A | Sulfonation of crude oils to produce petroleum sulfonates | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4592905A | Conversion of hydrogen sulfide to sulfur and hydrogen | Chemistry; Metallurgy | 9 | Expired |
| US3997451A | Sulfonate blends useful for improved oil recovery | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3964548A | Method for oil recovery by flooding with micellar dispersions containing crude oil sulfonates | Chemistry; Metallurgy | 8 | Expired |
| US5180572A | Conversion of hydrogen sulfide to sulfur and hydrogen | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4144266A | Sulfonation of crude oils to produce petroleum sulfonates | Emerging Cross-Sectional Technologies | 7 | Expired |
| US3956372A | Process for the production of petroleum sulfonate | Chemistry; Metallurgy | 6 | Expired |
| US4908064A | Road asphalt composition | Chemistry; Metallurgy | 5 | Expired |
| US4581128A | Hydrocarbon desulfurization process | Chemistry; Metallurgy | 5 | Expired |
| US3951828A | Process of injecting a micellar dispersion into a subterranean reservoir | Chemistry; Metallurgy | 3 | Expired |
| US4505810A | Hydrogen tetrachloroaluminate as a co-catalyst with sodium tetrachloroaluminate for the conversion of heavy hydrocarbons | Chemistry; Metallurgy | 3 | Expired |
| US4614623A | Sulfonation of crude oils with gaseous SO.sub.3 to produce petroleum sulfonates | Chemistry; Metallurgy | 3 | Expired |
| US5334363A | Process for recovering sulfur and hydrogen from hydrogen sulfide | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8124347B2 | Photosynthetic hydrogen production from the green alga chlamydomonas reinhardth | Chemistry; Metallurgy | 3 | Active |
| US5736117A | Sulfur debonding agent enhancing sulfur recovery from a hydrogen sulfide conversion process | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4560517A | Sulfonation of crude oils with gaseous SO.sub.3 to produce petroleum sulfonates | Chemistry; Metallurgy | 3 | Expired |
| US4557803A | Cracking process catalyst selection based on cation electronegativity | Chemistry; Metallurgy | 2 | Expired |
| US4555327A | Cracking with tetrachloroaluminate catalysts and water | Chemistry; Metallurgy | 1 | Expired |
| US4504378A | Sodium tetrachloroaluminate catalyzed process for the molecular weight reduction of liquid hydrocarbons | Chemistry; Metallurgy | 1 | Expired |
| US4147637A | Oil recovery by increasing the injectivity index of micellar systems containing crude oil sulfonates | Emerging Cross-Sectional Technologies | 0 | Expired |
| US8759058B2 | Photosynthetic hydrogen production from the green alga chlamydomonas reinhardii | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.