Sigmar-Peter von Halasz
10Patents
7h-index
16Co-inventors
63Inventor score
Filing activity: Jun 20, 1974 → Mar 20, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4500437A | Water soluble copolymers for use in fracture-acidizing of wells | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4158023A | Process for the manufacture of octafluoropropane | Chemistry; Metallurgy | 30 | Expired |
| US3962358A | Process for preparing perfluorononanes | Chemistry; Metallurgy | 10 | Expired |
| US3985810A | Process for preparing perfluorinated ethers | Chemistry; Metallurgy | 10 | Expired |
| US4324930A | 2,3-Dichloro-2-trifluoromethyl-1,1,1,3,4,4,5,5,5-nonafluoropentane and process for its manufacture | Chemistry; Metallurgy | 8 | Expired |
| US4970007A | Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4145311A | Process for reactivating fluorination catalysts | Performing Operations; Transporting | 7 | Expired |
| US5349019A | New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils | Chemistry; Metallurgy | 5 | Expired |
| US4551513A | Water soluble copolymers | Chemistry; Metallurgy | 5 | Expired |
| US5718821A | Copolymers of ethylenically unsaturated carboxylic acid esters with polyoxyalkylene ethers of lower, unsaturated alcohols as flow-improving agents for paraffin containing oils | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.