Inventor
KOEHLER GUENTHER
DE18 patents
⚠️ This page may combine multiple inventors who share the name “KOEHLER GUENTHER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HUELS CHEMISCHE WERKE AG
10 patentsUS6121466ASep 19, 2000
Process for the preparation of macrocyclic esters
HUELS CHEMISCHE WERKE AG38 citations92
US5717111AFeb 10, 1998
Process for the continuous preparation of macrocyclic compounds
HUELS CHEMISCHE WERKE AG15 citations73
US5387718AFeb 7, 1995
Method of manufacturing alkylphenyl alkyl ethers or alkylphenyl alkyl thioethers
HUELS CHEMISCHE WERKE AG11 citations72
US6218567B1Apr 17, 2001
Process for preparing hydroxybenzoic esters of oxo alcohols
HUELS CHEMISCHE WERKE AG6 citations71
US5789603AAug 4, 1998
Method for preparing 2-acetyl-γ-butyrolactone
HUELS CHEMISCHE WERKE AG13 citations68
US6107496AAug 22, 2000
Process for the preparation of cyclic esters
HUELS CHEMISCHE WERKE AG5 citations62
US6045662AApr 4, 2000
Process for preparing high-purity cyclopropyl methyl ketone
HUELS CHEMISCHE WERKE AG6 citations62
US5786502AJul 28, 1998
Process for preparing diesters of higher α,ω-dicarboxylic acids
HUELS CHEMISCHE WERKE AG0 citations51
US5436365AJul 25, 1995
Process for the preparation of pimelic esters
HUELS CHEMISCHE WERKE AG1 citations51
US6140514AOct 31, 2000
Process for the preparation of macrocyclic esters or lactones
HUELS CHEMISCHE WERKE AG1 citations42
DEGUSSA
6 patentsUS6784227B2Aug 31, 2004
Crosslinking base layer for fixing interlinings according to double dot and paste process
DEGUSSA45 citations92
US7385092B2Jun 10, 2008
Process for preparing alkanediols and alkanetriols having a vicinal diol group
DEGUSSA9 citations81
US6958421B2Oct 25, 2005
Salt-free preparation of cyclobutanone
DEGUSSA2 citations55
US7208640B2Apr 24, 2007
Process for isolating highly pure 2-methoxypropene
DEGUSSA0 citations51
US6747176B2Jun 8, 2004
Preparation of 2-chloro-1,1,1-trialkoxyethane
DEGUSSA0 citations47
US6500980B1Dec 31, 2002
Process for preparing amino derivatives of C-H-acid compounds
DEGUSSA0 citations41