Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5718821 | Copolymers of ethylenically unsaturated carboxylic acid esters with polyoxyalkylene ethers of lower, unsaturated alcohols as flow-improving agents for paraffin containing oils | Matthias Krull, Werner Reimann, Juliane Balzer, Horst Geiss | 1998-02-17 |
| 5349019 | New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils | Herbert Wirtz, Michael Feustel, Juliane Balzer | 1994-09-20 |
| 4970007 | Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil | Dennis Miller, Manfred Schmidt, Arno Holst | 1990-11-13 |
| 4551513 | Water soluble copolymers | Friedrich Engelhardt, Klaus Kuhlein, Ulrich Riegel, Jeffery C. Dawson, Anthony R. Reed | 1985-11-05 |
| 4500437 | Water soluble copolymers for use in fracture-acidizing of wells | Friedrich Engelhardt, Klaus Kuhlein, Ulrich Riegel, Jeffery C. Dawson, Anthony R. Reed | 1985-02-19 |
| 4324930 | 2,3-Dichloro-2-trifluoromethyl-1,1,1,3,4,4,5,5,5-nonafluoropentane and process for its manufacture | — | 1982-04-13 |