Inventor
HAFNER VOLKER
DE4 patents
Patents
4 patentsUS6140536AOct 31, 2000
Process for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA)
DEGUSSA9 citations69
US6316661B1Nov 13, 2001
Process for the production of 2,3,5-trimethylhydroquinone diesters
DEGUSSA3 citations61
US4157300AJun 5, 1979
Process for the purification of phenol and phenol formaldehyde containing waste water
DEGUSSA5 citations58
US6146612ANov 14, 2000
Method for recovering sulfuric acid from sulfate salts
DEGUSSA0 citations50