Francis E. Evans
12Patents
6h-index
11Co-inventors
59Inventor score
Filing activity: Dec 17, 1973 → Nov 29, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4227027A | Recyclable boron trifluoride catalyst and method of using same | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4216168A | Preparation of high purity tetrahydrocarbylammonium tetrahydridoborates | Chemistry; Metallurgy | 18 | Expired |
| US4174349A | Preparation of fluoroorganic compounds with calcium fluoride | Chemistry; Metallurgy | 10 | Expired |
| US4943423A | Process for recovering boron trifluoride from an impure gaseous boron trifluoride residue | Chemistry; Metallurgy | 8 | Expired |
| US4072027A | Stabilized heat activated heat exchange absorption pair | Chemistry; Metallurgy | 7 | Expired |
| US4265871A | Purification of boron-containing sulfuric acid | Chemistry; Metallurgy | 6 | Expired |
| US4781909A | Process for removing boron from sulfuric acid | Chemistry; Metallurgy | 4 | Expired |
| US3943100A | Nylon flame retardants based on certain organic acids | Chemistry; Metallurgy | 4 | Expired |
| US4209654A | Recyclable boron trifluoride catalyst and method of using same | Emerging Cross-Sectional Technologies | 3 | Expired |
| US3956236A | Synergistic compositions for increasing flame resistance of polymers | Textiles; Paper | 3 | Expired |
| US4157377A | Process for producing calcium fluoborate | Chemistry; Metallurgy | 2 | Expired |
| US4371707A | Process for the conversion of boron trifluoride dimethyl ether complex to the boron trifluoride dialkyl ether complex | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.