Roger A. Grey
75Patents
15h-index
40Co-inventors
84Inventor score
Filing activity: Jan 31, 1979 → Apr 7, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4744796A | Microemulsion fuel system | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US6008388A | Epoxidation process | Chemistry; Metallurgy | 40 | Expired |
| US7314545B2 | Desulfurization process | Chemistry; Metallurgy | 38 | Expired |
| US6005123A | Epoxidation process | Chemistry; Metallurgy | 31 | Expired |
| US6498259B1 | Direct epoxidation process using a mixed catalyst system | Chemistry; Metallurgy | 29 | Expired |
| US5364909A | Graft polymer compositions containing mono-amine functionalized polyoxyalkylene ethers | Chemistry; Metallurgy | 27 | Expired |
| US5171830A | Catalytic process for the preparation of polyalkylene carbonates | Chemistry; Metallurgy | 26 | Expired |
| US5091543A | Preparation of cyclic carbonates using alkylammonium and tertiary amine catalysts | Chemistry; Metallurgy | 25 | Expired |
| US4268454A | Anionic group VIII metal hydride catalysts | Chemistry; Metallurgy | 24 | Expired |
| US4731497A | Alkylation of aromatics with alpha-olefins | Chemistry; Metallurgy | 23 | Expired |
| US4254059A | Process for hydrogenation of nitriles | Performing Operations; Transporting | 22 | Expired |
| US4359404A | Hydrogenation of esters using alkali doped heterogeneous Group VIII transition metal catalysts | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6958405B2 | Polymer-encapsulated titanium zeolites for oxidation reactions | Performing Operations; Transporting | 18 | Expired |
| US6194591A | Aqueous epoxidation process using modified titanium zeolite | Performing Operations; Transporting | 17 | Expired |
| US5360787A | Dispersant compositions comprising sulfonated isobutylene maleic anhydride copolymer for subterranean well drilling and completion | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5210163A | Process for preparing alternating copolymers of olefinically unsaturated sulfonate salts and unsaturated dicarboxylic acid anhydrides | Chemistry; Metallurgy | 13 | Expired |
| US5939569A | Epoxidation process | Chemistry; Metallurgy | 13 | Expired |
| US5116882A | Process for making copolymers of vinyl aromatic monomers and vinyl phosphonic acid derivatives and foamed articles therefrom | Chemistry; Metallurgy | 12 | Expired |
| US6037484A | Epoxidation process | Chemistry; Metallurgy | 11 | Expired |
| US6063942A | Catalyst preparation and epoxidation process | Performing Operations; Transporting | 11 | Expired |
| US5292817A | Flame-retardant thermoplastic copolymers based on vinyl phosphonate derivatives grafted onto rubber | Chemistry; Metallurgy | 11 | Expired |
| US4418227A | Improved process for hydrogenating aldehydes and ketones by employing anionic group VIII metal hydride compositions as hydrogenation catalysts | Chemistry; Metallurgy | 10 | Expired |
| US7256149B2 | Catalyst regeneration process | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5115060A | Alternating copolymers of olefinically unsaturated sulfonate salts and unsaturated imides | Chemistry; Metallurgy | 9 | Expired |
| US7387981B1 | Direct epoxidation catalyst and process | Performing Operations; Transporting | 9 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.