Inventor · disambiguated record
Axel Hengstermann
Also filed as: HENGSTERMANN AXEL
16 granted patents·1 pending application·152 citations·filing 2003–2018
93Inventor score
Files withEVONIK DEGUSSA GMBH5NITZ JOERG-JOACHIM3EVONIK STOCKHAUSEN GMBH2KUPPINGER FRANZ-FELIX2BALDUF TORSTEN1
Top patents by PatentIndex Score
17 records- 0196US8895683B2Superabsorbent polymers and methods of making the sameEVONIK DEGUSSA GMBH·Filed 2013·Granted Nov 25, 2014·18 cites·11 claims
- 0296US8481784B2Superabsorbent polymers and methods of making the sameEVONIK STOCKHAUSEN GMBH·Filed 2012·Granted Jul 9, 2013·19 cites·23 claims
- 0395US8293941B2Superabsorbent polymers and methods of making the sameKUPPINGER FRANZ-FELIX·Filed 2012·Granted Oct 23, 2012·18 cites·13 claims
- 0495US8198481B2Process for preparing acrylic acid purified by crystallization from hydroxypropionic acid and apparatus thereforeKUPPINGER FRANZ-FELIX·Filed 2007·Granted Jun 12, 2012·36 cites·13 claims
- 0593US10392340B2Purification of crude isophoronediamine by partial condensation in series with total condensationEVONIK DEGUSSA GMBH·Filed 2017·Granted Aug 27, 2019·7 cites·20 claims
- 0692US9878979B2Fine purification of isophoronenitrile by melt crystallizationNITZ JOERG-JOACHIM·Filed 2016·Granted Jan 30, 2018·6 cites·9 claims
- 0791US9868699B2Process for removing cations from an isophoronenitrile product mixtureNITZ JOERG-JOACHIM·Filed 2016·Granted Jan 16, 2018·6 cites·18 claims
- 0889US8399658B2Method for isolation of laurolactam from a laurolactam synthesis process streamHENGSTERMANN AXEL·Filed 2010·Granted Mar 19, 2013·18 cites·15 claims
- 0984US9085506B2Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamineGALLE MARKUS·Filed 2011·Granted Jul 21, 2015·8 cites·65 claims
- 1084US8889914B2Method for producing isophoroneORSCHEL MATTHIAS·Filed 2011·Granted Nov 18, 2014·4 cites·34 claims
- 1180US8362299B2Method for producing and purifying aqueous phasesEVONIK STOCKHAUSEN GMBH·Filed 2009·Granted Jan 29, 2013·4 cites·16 claims
- 1270US7807826B2Purification of a crude lactam mixture by means of melt crystallizationEVONIK DEGUSSA GMBH·Filed 2008·Granted Oct 5, 2010·1 cites·18 claims
- 1368US9035102B2Hydrolysis of the residues obtained in the production of isophorone to recover isophorone and acetoneNITZ JOERG-JOACHIM·Filed 2014·Granted May 19, 2015·1 cites·34 claims
- 1454US10519096B2Process for preparing amino compounds from nitrile compoundsEVONIK DEGUSSA GMBH·Filed 2018·Granted Dec 31, 2019·0 cites·20 claims
- 1548US8252120B2Washing apparatus, a method of purifying a wash material and use of the washing apparatusNORDHOFF STEFAN·Filed 2003·Granted Aug 28, 2012·6 cites·28 claims
- 1644US10343975B2Coupling of distillative purification with a partial condenser for pre-purification of isophoronediamineEVONIK DEGUSSA GMBH·Filed 2017·Granted Jul 9, 2019·0 cites·15 claims
- 1739US2014187817A1Preparation of methacrylic acidBALDUF TORSTEN·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →