Inventor
GRAFEN PAUL
DE12 patents
Patents
12 patentsUS4519961AMay 28, 1985
Production of dry powders of substances which are sensitive to oxidation
BASF AG47 citations92
US6111117AAug 29, 2000
Process for isolation of pure substances from mixtures of high-boiling air and/or temperature-sensitive substances which require a high separation efficiency by rectification under medium vacuum, and columns suitable for this process
BASF AG16 citations91
US5950454ASep 14, 1999
Cloth or cloth-like packing which is subject to low pressure losses and has an ordered structure for use in material-exchange columns and rectification method using such packing
BASF AG22 citations91
US5063194ANov 5, 1991
Palladium catalyst
BASF AG30 citations91
US6554965B1Apr 29, 2003
Rectification column for isolating pure substances from high boiling air-and/or temperature sensitive substances
BASF AG15 citations83
US5468883ANov 21, 1995
Preparation of vitamin E
BASF AG14 citations73
US5290567AMar 1, 1994
Pulverulent products composed of a water-insoluble core substance and of a protective covering
BASF AG7 citations72
US4191692AMar 4, 1980
Manufacture of tocopherol
BASF AG11 citations70
US4182731AJan 8, 1980
Preparation of aqueous solutions or fine aqueous dispersions of polyenyltriarylphosphonium salts
BASF AG18 citations70
US5523420AJun 4, 1996
Preparation of alpha-tocopherol and alpha-tocopheryl acetate in liquid or supercritical carbon dioxide
BASF AG10 citations69
US4206153AJun 3, 1980
Treatment of methanolic-aqueous residues from syntheses employing triphenylphosphonium salts
BASF AG2 citations61
US5041572AAug 20, 1991
Preparation of 2,3,5-trimethyl-p-benzoquinone
BASF AG3 citations59