Inventor · disambiguated record
Hans Joachim Hasselbach
Also filed as: HASSELBACH HANS J · HASSELBACH HANS JOACHIM
35 granted patents·3 pending applications·260 citations·filing 1990–2021
97Inventor score
Files withDEGUSSA17EVONIK OPERATIONS GMBH8BUSS DIETER2EVONIK DEGUSSA GMBH2FINKELDEI CASPAR HEINRICH2
Top patents by PatentIndex Score
38 records- 0192US5770769AProcess for the preparation of D,L-methionine or the salt thereofDEGUSSA·Filed 1996·Granted Jun 23, 1998·59 cites·31 claims
- 0287US5990349AProcess for the preparation of D,L-methionine or the salt thereofDEGUSSA·Filed 1998·Granted Nov 23, 1999·42 cites·17 claims
- 0386US10899706B2Method for preparing methionineEVONIK OPERATIONS GMBH·Filed 2017·Granted Jan 26, 2021·3 cites·20 claims
- 0485US7833508B2Reaction vessel and process for its useEVONIK DEGUSSA GMBH·Filed 2009·Granted Nov 16, 2010·8 cites·18 claims
- 0585US7655072B2Process for purifying CO2 gas streamsDEGUSSA·Filed 2005·Granted Feb 2, 2010·19 cites·30 claims
- 0683US9133113B2Method for the production of 2-hydroxy-4-(methylthio)butyronitrile from 3-(methylthio)propanal and hydrogen cyanideEVONIK DEGUSSA GMBH·Filed 2014·Granted Sep 15, 2015·2 cites·11 claims
- 0781US9029597B2Method for the conversion of methylmercaptopropionaldehyde formed from crude acrolein and crude methyl mercaptanSTEFFAN MARTIN·Filed 2012·Granted May 12, 2015·4 cites·15 claims
- 0880US8729288B2Method for the production of 2-hydroxy-4-(methylthio)butyronitrile from 3-(methylthio)propanal and hydrogen cyanideBUSS DIETER·Filed 2012·Granted May 20, 2014·2 cites·23 claims
- 0980US7119228B2Process for producing methionineDEGUSSA·Filed 2005·Granted Oct 10, 2006·6 cites·20 claims
- 1079US9403764B2Method of production of a methionine saltHASSELBACH HANS JOACHIM·Filed 2015·Granted Aug 2, 2016·2 cites·13 claims
- 1179US8624066B2Process for preparing methylmercaptopropionaldehydeFINKELDEI CASPAR HEINRICH·Filed 2011·Granted Jan 7, 2014·2 cites·20 claims
- 1278US9023284B2Method of production of a methionine saltHASSELBACH HANS JOACHIM·Filed 2012·Granted May 5, 2015·3 cites·11 claims
- 1378US6126972AProcess for the preparation of aqueous sodium methioninate solutions and use of those solutions in the production of a granulateDEGUSSA·Filed 1999·Granted Oct 3, 2000·21 cites·16 claims
- 1477US9156782B2Process for the preparation of methionineKOERFER MARTIN·Filed 2013·Granted Oct 13, 2015·2 cites·10 claims
- 1574US9206121B2Method for the production of D,L-methionineBUSS DIETER·Filed 2015·Granted Dec 8, 2015·1 cites·11 claims
- 1674US8759592B2Process for preparing methylmercaptopropionaldehydeFINKELDEI CASPAR HEINRICH·Filed 2013·Granted Jun 24, 2014·1 cites·21 claims
- 1773US6797827B2Process for the preparation of alpha-amino acids by hydrolysis of hydantoins at elevated pressure and elevated temperatureDEGUSSA·Filed 2003·Granted Sep 28, 2004·6 cites·22 claims
- 1871US10683240B2Production method for dipeptide-containing granulesEVONIK OPERATIONS GMBH·Filed 2018·Granted Jun 16, 2020·1 cites·13 claims
- 1971US7179938B2Process for the preparation of methionineDEGUSSA·Filed 2002·Granted Feb 20, 2007·6 cites·23 claims
- 2068US7199270B2Method for the separation of methyl mercaptan from reaction gas mixturesDEGUSSA·Filed 2004·Granted Apr 3, 2007·5 cites·16 claims
- 2166US5969176AProcess for the production of trimethylhydroquinone diesters and of trimethylhydroquinoneDEGUSSA·Filed 1999·Granted Oct 19, 1999·9 cites·12 claims
- 2263US6140536AProcess for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA)DEGUSSA·Filed 1996·Granted Oct 31, 2000·9 cites·18 claims
- 2360US6103924AProcess for the preparation of 2,3,5-trimethylhydroquinone diestersDEGUSSA·Filed 1999·Granted Aug 15, 2000·7 cites·21 claims
- 2458US6329535B1Process for preparing esterified chroman compoundsDEGUSSA·Filed 2000·Granted Dec 11, 2001·3 cites·21 claims
- 2558US6265617B1Process for the preparation of 3,5,5-trimethylcyclohexa-3-en-1-one (β-isophorone) by isomerization of 3,5,5- trimethylcyclohexa-2-en-1-one (α-isophorone)DEGUSSA·Filed 1999·Granted Jul 24, 2001·6 cites·14 claims
- 2657US5049283AMethod for the recovery of aqueous solutions of free, neutral α-amino acids from aqueous solutions of their alkali-metal saltsDEGUSSA·Filed 1990·Granted Sep 17, 1991·6 cites·5 claims
- 2755US9464045B2Process for the preparation of methionineKOERFER MARTIN·Filed 2015·Granted Oct 11, 2016·0 cites·12 claims
- 2855US6008409AMethod for obtaining 2-hydroxy-4-methylthiobutyric acid (MHA) which is stable in storageDEGUSSA·Filed 1997·Granted Dec 28, 1999·19 cites·12 claims
- 2954US12195422B2Process for the preparation of D,L-methionineEVONIK OPERATIONS GMBH·Filed 2020·Granted Jan 14, 2025·0 cites·14 claims
- 3054US6150563AAliphatic alkanals with improved storage stability and method of improving the storage stabilityDEGUSSA·Filed 1998·Granted Nov 21, 2000·6 cites·10 claims
- 3153US2023391720A1D,l-methionine with an optimized particle size distributionEVONIK OPERATIONS GMBH·Filed 2021·Application pending·0 cites
- 3252US9617209B2Process for obtaining methionineREICHERT STEFAN·Filed 2014·Granted Apr 11, 2017·0 cites·22 claims
- 3350US10919848B2Process for preparing methionineEVONIK OPERATIONS GMBH·Filed 2018·Granted Feb 16, 2021·0 cites·12 claims
- 3450US2024083858A1Process for the diastereomerically pure preparation of dl/ld-methionylmethionineEVONIK OPERATIONS GMBH·Filed 2021·Application pending·0 cites
- 3548US11180426B2Dipeptide-containing granular materialEVONIK OPERATIONS GMBH·Filed 2017·Granted Nov 23, 2021·0 cites·21 claims
- 3640US12512186B2Method and system for process controlEVONIK OPERATIONS GMBH·Filed 2021·Granted Dec 30, 2025·0 cites·14 claims
- 3731US2018194804A1Simplified and scalable method for synthesis of 2,6-bis(methionyl)- 1,4-diketopiperazineEvonik Dequssa GmbH·Filed 2016·Application pending·0 cites
- 3829US6146612AMethod for recovering sulfuric acid from sulfate saltsDEGUSSA·Filed 1998·Granted Nov 14, 2000·0 cites·11 claims
Join the waitlist — get patent alerts
Get an alert when Hans Joachim Hasselbach files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →