Inventor
PIEPER FRIEDRICH
DE13 patents
⚠️ This page may combine multiple inventors who share the name “PIEPER FRIEDRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HENKEL KGAA
9 patentsUS4744794AMay 17, 1988
Leather fatliquoring agents combinable with tanning and retanning compositions
HENKEL KGAA13 citations73
US4741738AMay 3, 1988
Sulfonation of fats and oils
HENKEL KGAA7 citations72
US4903362AFeb 27, 1990
Sulfited fats as oiling agents for leather and skins
HENKEL KGAA6 citations70
US4800045AJan 24, 1989
Sulfited fats
HENKEL KGAA5 citations70
US5041597AAug 20, 1991
Surface-active sulfophosphoric-acid-(partial)-alkyl-esters
HENKEL KGAA2 citations62
US4451261AMay 29, 1984
Preparation of lubricating agents for leathers and furs
HENKEL KGAA3 citations61
US4654042AMar 31, 1987
Sulfonated lubricating agents for leather and furs process therefore
HENKEL KGAA3 citations60
US4956116ASep 11, 1990
Surface-active, saturated sulfophosphoric acid-(partial)-alkyl esters
HENKEL KGAA1 citations51
US4765875AAug 23, 1988
Preparation of sulfonated lubricating agents for leather and furs
HENKEL KGAA0 citations49