Werner Schwertfeger
58Patents
17h-index
58Co-inventors
87Inventor score
Filing activity: Jan 14, 1981 → Nov 20, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6255536A | Fluorine containing vinyl ethers | Chemistry; Metallurgy | 99 | Expired |
| US6833403B1 | Aqueous dispersions of fluoropolymers | Chemistry; Metallurgy | 80 | Expired |
| US7166198B2 | Treatment of fluorocarbon feedstocks | Performing Operations; Transporting | 73 | Expired |
| US6794550B2 | Method of making an aqueous dispersion of fluoropolymers | Emerging Cross-Sectional Technologies | 58 | Expired |
| US6825250B2 | Process for reducing the amount of fluorinated surfactant in aqueous fluoropolymer dispersions | Chemistry; Metallurgy | 43 | Expired |
| US7671112B2 | Method of making fluoropolymer dispersion | Emerging Cross-Sectional Technologies | 41 | Active |
| US7018541B2 | Removal of fluorinated surfactants from waste water | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6642415B1 | Method for recovering fluorinated emulsifiers | Chemistry; Metallurgy | 32 | Expired |
| US6436244B1 | Process for the elution of fluorinated emulsifiers | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6482979B1 | Perfluorinated acid fluorides and preparation thereof | Chemistry; Metallurgy | 29 | Expired |
| US7074862B2 | Emulsifier free aqueous emulsion polymerization process for making fluoropolymers | Chemistry; Metallurgy | 29 | Expired |
| US4987254A | Fluorinated carboxylic acid fluorides | Chemistry; Metallurgy | 25 | Expired |
| US4808651A | Solutions of fluoropolymers, and their use | Chemistry; Metallurgy | 22 | Expired |
| US6255535A | Fluorine containing allylethers and higher homologs | Chemistry; Metallurgy | 20 | Expired |
| US6703520B2 | Process of preparing halogenated esters | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6657013B2 | Imidate-containing fluoropolymer compositions | Chemistry; Metallurgy | 19 | Expired |
| US6803425B2 | Fluoropolymers having pendant imidate structures | Chemistry; Metallurgy | 18 | Expired |
| US7754795B2 | Coating composition | Chemistry; Metallurgy | 17 | Active |
| US6943228B2 | Ultraclean fluoroelastomer suitable for use in the manufacturing of electronic components | Chemistry; Metallurgy | 14 | Expired |
| US7795332B2 | Method of removing fluorinated carboxylic acid from aqueous liquid | Emerging Cross-Sectional Technologies | 14 | Active |
| US4940814A | Reaction of hexafluoropropene oxide with fluorinated carboxylic acid fluorides | Chemistry; Metallurgy | 12 | Expired |
| US4933388A | Solutions of copolymers of the tetrafluoroethylene/ethylene type | Chemistry; Metallurgy | 8 | Expired |
| US7358296B2 | Aqueous dispersions of fluoropolymers | Chemistry; Metallurgy | 8 | Expired |
| US7776946B2 | Aqueous emulsion polymerization of fluorinated monomers using a fluorinated surfactant | Chemistry; Metallurgy | 8 | Active |
| US7838608B2 | Fluorinated surfactants for making fluoropolymers | Chemistry; Metallurgy | 8 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.