Inventor
MAIXNER STEFAN
DE20 patents
⚠️ This page may combine multiple inventors who share the name “MAIXNER STEFAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BASF AG
11 patentsUS7342134B2Mar 11, 2008
Method for the distillative recovery of toluylenediamine
BASF AG8 citations71
US6686465B2Feb 3, 2004
Preparation of cyclic lactams
BASF AG3 citations63
US7501047B2Mar 10, 2009
Method for purifying caprolactam
BASF AG3 citations62
US7217818B2May 15, 2007
Purification of caprolactam
BASF AG2 citations62
US6878798B2Apr 12, 2005
Method for producing a polymer, using caprolactam
BASF AG3 citations62
US6828457B2Dec 7, 2004
Method for reducing the content of an unsaturated amine in a mixture containing an amine and a nitrile
BASF AG2 citations62
US7115781B2Oct 3, 2006
Iron-containing oxidic material suitable for use as hydrogenation catalyst precursor
BASF AG1 citations52
US6896772B2May 24, 2005
Method for separating ammonia from solutions containing caprolactam and ammonia
BASF AG0 citations52
US7875740B2Jan 25, 2011
Iron-containing material suitable for use as hydrogenation catalyst
BASF AG0 citations49
US6683178B2Jan 27, 2004
Preparation of cyclic lactams
BASF AG0 citations42
US7385073B2Jun 10, 2008
Method for reducing the content of an unsaturated amine in a mixture containing an amino nitrile, a diamine, a dinitrile or mixtures thereof
BASF AG0 citations41
BASF SE
5 patentsUS12497352B2Dec 16, 2025
Process for producing isocyanates
BASF SE0 citations60
US12415780B2Sep 16, 2025
Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates
BASF SE0 citations54
US11512046B2Nov 29, 2022
Heterogeneous catalysts for the direct carbonylation of nitro aromatic compounds to isocyanates
BASF SE1 citations54
US10435354B2Oct 8, 2019
Process for preparing isocyanates in dialkyl carbonates as solvent
BASF SE0 citations51
US10093615B2Oct 9, 2018
Process for preparing isocyanates in dialkyl carbonates as solvent
BASF SE1 citations51