Inventor
LACH DIETRICH
19 patents
Patents
19 patentsUS4888412ADec 19, 1989
Tanning assistant
BASF AG18 citations73
US4596581AJun 24, 1986
Carboxyl- and amino-containing copolymer for after-tanning mineral tanned leather
BASF AG13 citations72
US4403993ASep 13, 1983
Preparation of water-soluble or self-dispersing resin tanning agents
BASF AG8 citations72
US5296531AMar 22, 1994
Pigment preparations
BASF AG13 citations71
US4936864AJun 26, 1990
Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistants, their preparation and use in the tanning of leather
BASF AG6 citations62
US4629616ADec 16, 1986
Basic chromium aluminum sulfates and their preparation
BASF AG3 citations62
US4563520AJan 7, 1986
Metal complexes of dis- or trisazo compounds containing a middle component twice substituted by hydroxy and/or amino
BASF AG4 citations62
US4491543AJan 1, 1985
Dis-, tris-, and tetrakisazo compounds containing resorcinol, sulfonylamino, and two or three sulfonic acid groups
BASF AG4 citations62
US4390340AJun 28, 1983
Tanning agent, its preparation and its use for retanning
BASF AG4 citations62
US4377387AMar 22, 1983
Deliming hides
BASF AG3 citations62
US4042604AAug 16, 1977
Isolation of dinitroanthraquinone having a high content of α,α-d
BASF AG4 citations62
US4272243AJun 9, 1981
Dyeing of grain leather
BASF AG6 citations61
US4053488AOct 11, 1977
Separation of 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone
BASF AG3 citations60
US4213760AJul 22, 1980
Deliming of hides
BASF AG4 citations59
US4908239AMar 13, 1990
Finishing of leather
BASF AG2 citations57
US4729768AMar 8, 1988
Deliming of hides and use of cyclic esters of sulfurous acid as deliming agents
BASF AG0 citations51
US4675021AJun 23, 1987
Amphoteric condensates and their use in retanning
BASF AG1 citations51
US4474695AOct 2, 1984
Complex dye mixture containing at least two cobalt 1:2 complexes of azo dyes
BASF AG0 citations51
US4322210AMar 30, 1982
Auxiliary, and process, for the soaking of hides
BASF AG1 citations51