Bernard Cheminal
24Patents
7h-index
13Co-inventors
66Inventor score
Filing activity: Jan 30, 1979 → Jan 18, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5523500A | Mass catalysts based on chromium and nickel oxides and their application to the fluorination of halogenated hydrocarbons | Chemistry; Metallurgy | 21 | Expired |
| US5731481A | Process for the manufacture of 1,1,1,2-Tetrafluoroethane | Chemistry; Metallurgy | 17 | Expired |
| US5880049A | Regeneration of catalysts for gas phase fluorination | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5453551A | Purification of pentafluoroethane | Chemistry; Metallurgy | 11 | Expired |
| US4579976A | Catalytic process for the preparation of trifluoroacetaldehyde | Chemistry; Metallurgy | 9 | Expired |
| US4579974A | Catalytic process for the preparation of hexafluoroacetone | Chemistry; Metallurgy | 7 | Expired |
| US4310697A | Process for the manufacture of dimethylethylamine | Chemistry; Metallurgy | 7 | Expired |
| US5055624A | Synthesis of 1,1-dichloro-1,2,2,2-tetrafluoroethane | Chemistry; Metallurgy | 6 | Expired |
| US4643851A | Process for preparing trifluoroacetyl chloride | Chemistry; Metallurgy | 6 | Expired |
| US6242659A | Process for the manufacture of difluoromethane | Chemistry; Metallurgy | 5 | Expired |
| US5932776A | Process for fluorination of perchloroethylene or of pentachloroethane | Chemistry; Metallurgy | 4 | Expired |
| US5430205A | Process for the purification of 1,1,1,2-tetrafluoroethane | Chemistry; Metallurgy | 3 | Expired |
| US5053564A | Selective hydrogenolysis of perhalogenated ethane derivatives | Chemistry; Metallurgy | 3 | Expired |
| US4849555A | Synthesis of 1-chloro-1, 1-difluoroethane | Chemistry; Metallurgy | 3 | Expired |
| US5616820A | Process for the manufacture of 1,1,1,2-tetrafluoro-2-chloroethane and of pentafluoroethane | Chemistry; Metallurgy | 3 | Expired |
| US4248673A | Process for obtaining colorless and stable isophorone | Chemistry; Metallurgy | 3 | Expired |
| US4647706A | Process for the synthesis of 2,2,2-trifluoroethanol and 1,1,1,3,3,3-hexafluoroisopropanol | Chemistry; Metallurgy | 2 | Expired |
| US4745236A | Synthesis of chloropentafluoroethane | Chemistry; Metallurgy | 2 | Expired |
| US5705718A | Process for the purification of 1,1,1,2-tetrafluoroethane | Chemistry; Metallurgy | 2 | Expired |
| US5354928A | Process for the manufacture of 1,1,1,2-tetrafluorochloroethane and of pentafluoroethane | Performing Operations; Transporting | 2 | Expired |
| US6639115B2 | Process for the manufacture of difluoromethane | Chemistry; Metallurgy | 1 | Expired |
| US6395941B1 | Process for the purification of 1,1,1,2-tetrafluoroethane | Chemistry; Metallurgy | 1 | Expired |
| US4642386A | Process for the preparation of pure hydrates of fluoral and of hexafluoroacetone from hemiacetals | Chemistry; Metallurgy | 0 | Expired |
| US4658070A | Process for the synthesis of 2,2,2-trifluoroethanol | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.