Inventor
PIEPER WERNER
DE18 patents
⚠️ This page may combine multiple inventors who share the name “PIEPER WERNER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
14 patentsUS4507249AMar 26, 1985
Process for making derivatives of vinylphosphonic acid or vinylpyrophosphonic acid
HOECHST AG9 citations73
US4486357ADec 4, 1984
Process for making vinylphosphonic acid or vinylpyrophosphonic acid
HOECHST AG7 citations73
US4587334AMay 6, 1986
Process for making cyanuric acid
HOECHST AG3 citations62
US4529559AJul 16, 1985
Process for making derivatives of vinylphosphonic acid or vinylpyrophosphonic acid
HOECHST AG3 citations62
US4473509ASep 25, 1984
Process for making phosphonic anhydrides
HOECHST AG2 citations61
US4525333AJun 25, 1985
Process for separating gallium and indium from aqueous solutions
HOECHST AG3 citations58
US4468355AAug 28, 1984
Process for making 1-hydroxy-alkane-1-phosphonic acids
HOECHST AG1 citations52
US4735748AApr 5, 1988
Process for making phosphonic acid dichlorides
HOECHST AG1 citations51
US4692281ASep 8, 1987
Carboxytetralinephosphonic acids and process for making them
HOECHST AG0 citations51
US4692282ASep 8, 1987
Phenyltetraline-diphosphonic acids and process for making them
HOECHST AG1 citations51
US4645835AFeb 24, 1987
Process for making chloroisocyanuric acids
HOECHST AG1 citations51
US4427603AJan 24, 1984
Process for making phosphonic acid ester chlorides
HOECHST AG0 citations50
US5122359AJun 16, 1992
Process for reprocessing sulfuric acid from phosphorous purification
HOECHST AG1 citations42
US5213717AMay 25, 1993
Apparatus for fumigating waste waters
HOECHST AG0 citations41