Inventor
WOJTECH BERNHARD
DE10 patents
Patents
10 patentsUS5073622ADec 17, 1991
Process for the preparation of novolak resins with low metal ion content
HOECHST AG61 citations94
US4720577AJan 19, 1988
Process for the extraction of carboxylic acids from dilute aqueous solutions
HOECHST AG19 citations78
US4373073AFeb 8, 1983
Process for the preparation of glycidyl ethers of monohydric or polyhydric phenols, the glycidyl ethers and use thereof
HOECHST AG22 citations77
US4626605ADec 2, 1986
Process for extracting phenols from aqueous solutions
HOECHST AG8 citations71
US4196180AApr 1, 1980
Purification of phosphoric acid by means of organic solvents
HOECHST AG7 citations70
US3996336ADec 7, 1976
Purification of phosphoric acid
HOECHST AG3 citations61
US4986974AJan 22, 1991
Process for the separation of halogenated hydrocarbons from hydrochloric acid
HOECHST AG2 citations60
US5068358ANov 26, 1991
Process for extracting n-methyl-2-pyrrolidone
HOECHST AG2 citations59
US4814518AMar 21, 1989
Process for extracting nitrohydroxyaromatics from aqueous solutions
HOECHST AG4 citations54
US4864065ASep 5, 1989
Process for removing halogenated hydroxyaromatics from aqueous solutions
HOECHST AG0 citations45