Roger Scott Johnson
9Patents
3h-index
16Co-inventors
54Inventor score
Filing activity: Mar 3, 1997 → Aug 11, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8133587B2 | Proppant materials comprising a coating of thermoplastic material, and methods of making and using | Emerging Cross-Sectional Technologies | 28 | Active |
| US6132885A | Composites prepared with ready-to-use resin/wax emulsion adhesives | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8133970B2 | Oxidized and maleated derivative compositions | Emerging Cross-Sectional Technologies | 6 | Active |
| US8133408B2 | Pitch emulsions | Chemistry; Metallurgy | 2 | Active |
| US10435611B2 | Methods for producing emulsifiers for oil-based drilling fluids | Chemistry; Metallurgy | 1 | Active |
| US9403703B2 | Guanidine-based polymers for separation processes | Chemistry; Metallurgy | 1 | Active |
| US8557138B2 | Pitch emulsions | Chemistry; Metallurgy | 0 | Active |
| US11142676B2 | Methods for producing emulsifiers for oil-based drilling fluids | Chemistry; Metallurgy | 0 | Active |
| US9868891B2 | Methods for producing emulsifiers for oil-based drilling fluids | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.