Robert M. Lewis
22Patents
9h-index
15Co-inventors
72Inventor score
Filing activity: Jul 30, 1979 → Jan 17, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4637992A | Intercalated clay compositions | Emerging Cross-Sectional Technologies | 56 | Expired |
| US4510257A | Silica-clay complexes | Chemistry; Metallurgy | 53 | Expired |
| US4259844A | Stacked disc heat exchanger for refrigerator cold finger | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| USD668124S1 | Hand tool | General | 19 | Active |
| US4356701A | Cryopump | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4717513A | Silica intercalated crystalline zirconium phosphate-type materials | Performing Operations; Transporting | 18 | Expired |
| US4961843A | Lewis econosizer for hydraulically classifying particles | Performing Operations; Transporting | 17 | Expired |
| US6666335B1 | Multi-mineral/ash benefication process and apparatus | Performing Operations; Transporting | 15 | Expired |
| US6165030A | Pedal driven propulsion device | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4653972A | Bookbinding machine | Performing Operations; Transporting | 9 | Expired |
| US4454722A | Cryopump | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4497908A | Copper-alkali metal-ruthenium/silica catalyst for converting syngas to linear alpha-olefins | Chemistry; Metallurgy | 7 | Expired |
| US4455389A | Magnesium hydride modified aluminum/siliceous compositions | Chemistry; Metallurgy | 5 | Expired |
| US4442307A | Conversion of dimethyl ether to formaldehyde using Bi-Mo-Fe catalyst | Performing Operations; Transporting | 4 | Expired |
| US10221724B2 | Horizontal engine build stand | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US4450099A | Barium hydride modified aluminum/siliceous compositions | Chemistry; Metallurgy | 3 | Expired |
| US4439624A | Conversion of dimethyl ether to formaldehyde using Bi-Mo-Cu catalyst | Performing Operations; Transporting | 2 | Expired |
| US4472530A | Zirconium hydride modified aluminum/siliceous compositions | Performing Operations; Transporting | 1 | Expired |
| US10920621B2 | Horizontal engine build stand | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US4435602A | Conversion of dimethyl ether to formaldehyde | Chemistry; Metallurgy | 1 | Expired |
| US9885286B2 | Gas turbine engine assembly method and system | Emerging Cross-Sectional Technologies | 1 | Active |
| US10533498B2 | Gas turbine engine assembly method and system | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.