David L. Gefvert
5Patents
4h-index
2Co-inventors
43Inventor score
Filing activity: Sep 30, 1988 → Nov 14, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5256187A | Separation of precious metals by an ion exchange process | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6737392B1 | MDEA ester quats with high content of monoester in blends with tea ester quats | Chemistry; Metallurgy | 13 | Expired |
| US7572761B2 | Process for cleaning and softening fabrics | Chemistry; Metallurgy | 10 | Active |
| US5284633A | Solvent extraction of precious metals with hydroxyquinoline and stripping with acidified thiourea | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4855114A | Dioxime kinetic enhancer for solvent extraction of gallium from basic aqueous solutions thereof | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.