Inventor
PFLEIDERER ERNST
32 patents
⚠️ This page may combine multiple inventors who share the name “PFLEIDERER ERNST”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ROEHM GMBH
26 patentsUS4314800AFeb 9, 1982
Method for treating pelts and leather
ROEHM GMBH43 citations92
US4220724ASep 2, 1980
Method for treating raw materials containing collagen
ROEHM GMBH31 citations92
US4220723ASep 2, 1980
Enzymatic treatment of proteinaceous animal waste products
ROEHM GMBH32 citations92
US3986926AOct 19, 1976
Method for preparing tannable pelts from animal skins and hides
ROEHM GMBH37 citations92
US5102422AApr 7, 1992
Methods for leather processing including liquid enzyme formulation
ROEHM GMBH24 citations90
US4943530AJul 24, 1990
Liquid enzyme preparations
ROEHM GMBH27 citations90
US4484924ANov 27, 1984
Process for producing unhaired, storable hides and skins
ROEHM GMBH20 citations82
US4294087AOct 13, 1981
Enzymatic method for hair recovery with concurrent opening of hide structure
ROEHM GMBH20 citations82
US4293647AOct 6, 1981
Method of dissolving collagen-containing tissues
ROEHM GMBH18 citations82
US3939040AFeb 17, 1976
Enzymatic bating method
ROEHM GMBH27 citations82
US4636222AJan 13, 1987
Enzymatic unhairing method
ROEHM GMBH24 citations81
US4314801AFeb 9, 1982
Soaking method
ROEHM GMBH9 citations74
US4310328AJan 12, 1982
Process for liming pelts of animal hides and skins
ROEHM GMBH6 citations74
US4278432AJul 14, 1981
Soaking method
ROEHM GMBH9 citations74
US4273876AJun 16, 1981
Enzymatic bating method
ROEHM GMBH10 citations74
US3966551AJun 29, 1976
Method for preparing tannable pelts from animal skins and hides
ROEHM GMBH15 citations74
US5089414AFeb 18, 1992
Enzymatic soaking method
ROEHM GMBH7 citations73
US4968621ANov 6, 1990
Method for the wet degreasing of hide and skin stock
ROEHM GMBH13 citations73
US4961750AOct 9, 1990
Acrylate tanning agent
ROEHM GMBH14 citations73
US4960428AOct 2, 1990
Method for liming skins and hides
ROEHM GMBH17 citations73
US4443221AApr 17, 1984
Tanning method
ROEHM GMBH10 citations71
US4398911AAug 16, 1983
Tanning method
ROEHM GMBH8 citations71
US4889811ADec 26, 1989
Methods for making leather
ROEHM GMBH8 citations68
US4351639ASep 28, 1982
Process for liming pelts of animal hides and skins
ROEHM GMBH2 citations63
US4344762AAug 17, 1982
Soaking method
ROEHM GMBH6 citations63
US4105402AAug 8, 1978
Treatment of sulfide-limed pelts in acid baths
ROEHM GMBH0 citations52