Inventor · disambiguated record
Volker Hafner
Also filed as: HAEFNER VOLKER · HAFNER VOLKER · JUNKERMANN HELMUT
10 granted patents·1 pending application·63 citations·filing 1977–2007
87Inventor score
Top patents by PatentIndex Score
11 records- 0177US7148379B2Preparation of 2-hydroxy-4-methylthiobutyric acidDEGUSSA·Filed 2005·Granted Dec 12, 2006·3 cites·17 claims
- 0267US5847207AProcess for producing 2-hydroxy-4-methylthiobutyric acid (MHA) and its use as feed stuff supplementDEGUSSA·Filed 1995·Granted Dec 8, 1998·12 cites·16 claims
- 0366US5976609AProcess for recovering 2-hydroxy-4-methylthiobutyric acid (MHA), MHA and its useDEGUSSA·Filed 1995·Granted Nov 2, 1999·9 cites·8 claims
- 0463US6316661B1Process for the production of 2,3,5-trimethylhydroquinone diestersDEGUSSA·Filed 2000·Granted Nov 13, 2001·3 cites·10 claims
- 0563US6140536AProcess for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA)DEGUSSA·Filed 1996·Granted Oct 31, 2000·9 cites·18 claims
- 0655US6008409AMethod for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) which is stable in storageDEGUSSA·Filed 1997·Granted Dec 28, 1999·19 cites·12 claims
- 0749US2009192309A1Process for preparing triallyl cyanurateEVONIK DEGUSSA GMBH·Filed 2007·Application pending·0 cites
- 0848US4307037AProcess for the production of iminodiacetonitrileDEGUSSA·Filed 1980·Granted Dec 22, 1981·3 cites·14 claims
- 0937US4157300AProcess for the purification of phenol and phenol formaldehyde containing waste waterDEGUSSA·Filed 1977·Granted Jun 5, 1979·5 cites·12 claims
- 1036US6566559B2Process for the production of isopropenyl methyl etherDEGUSSA·Filed 2001·Granted May 20, 2003·0 cites·11 claims
- 1129US6146612AMethod for recovering sulfuric acid from sulfate saltsDEGUSSA·Filed 1998·Granted Nov 14, 2000·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →