Stephen Cliffe
11Patents
1h-index
9Co-inventors
43Inventor score
Filing activity: Jun 23, 2009 → Oct 23, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8889602B2 | Copolymer for shale stabilization and method of use | Chemistry; Metallurgy | 1 | Active |
| US11584876B2 | Additive to improve cold temperature properties in oil-based fluids | Fixed Constructions | 0 | Active |
| US11827838B2 | Polymeric amidoamine emulsifiers | Chemistry; Metallurgy | 0 | Active |
| US11447680B2 | Additive to improve cold temperature properties in oil-based fluids | General | 0 | Revoked |
| US11884871B2 | Polymeric rheology modifiers | Chemistry; Metallurgy | 0 | Active |
| US11340377B2 | NMR characterization and monitoring of drilling fluids | General | 0 | Revoked |
| US10253238B2 | Anti-accretion additives for wellbore fluids and methods of use thereof | Chemistry; Metallurgy | 0 | Active |
| US11555138B2 | Fluids and methods for mitigating sag and extending emulsion stability | Fixed Constructions | 0 | Active |
| US12365824B2 | Polymeric amidoamine emulsifiers | Chemistry; Metallurgy | 0 | Active |
| US11708518B2 | Additive to improve cold temperature properties in oil-based fluids | Fixed Constructions | 0 | Active |
| US11543556B2 | NMR characterization and monitoring of drilling fluids | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.