Walter D. Vann
13Patents
5h-index
41Co-inventors
62Inventor score
Filing activity: Sep 10, 2002 → Sep 6, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7109729B2 | Method for analysis of a working fluid using impedance spectroscopy | Physics | 9 | Expired |
| US8399390B2 | HVI-PAO in industrial lubricant and grease compositions | Chemistry; Metallurgy | 8 | Active |
| US7172903B2 | Method for on-line monitoring of lubricating oil using light in the visible and near IR spectra | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8613852B2 | Process for producing a high stability desulfurized heavy oils stream | Chemistry; Metallurgy | 7 | Active |
| US7176168B2 | Lubricant containing a synergistic combination of rust inhibitors, antiwear agents, and a phenothiazine antioxidant | Chemistry; Metallurgy | 5 | Expired |
| US6876193B2 | Method for deconvolution of impedance spectra | Physics | 2 | Expired |
| US8894845B2 | Alkali metal hydroprocessing of heavy oils with enhanced removal of coke products | Chemistry; Metallurgy | 1 | Active |
| US6872692B2 | Synthetic hydrocarbon fluid | Chemistry; Metallurgy | 1 | Expired |
| US8696890B2 | Desulfurization process using alkali metal reagent | Chemistry; Metallurgy | 1 | Active |
| US8673132B2 | Heavy oil conversion process with in-situ potassium sulfide generation | Chemistry; Metallurgy | 1 | Active |
| US8778173B2 | Process for producing a high stability desulfurized heavy oils stream | Chemistry; Metallurgy | 0 | Active |
| US10942161B2 | Electrostatic varnish and precursor detection in lubricants | Chemistry; Metallurgy | 0 | Active |
| US8404106B2 | Regeneration of alkali metal reagent | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.