Inventor · disambiguated record
Stefan Drees
Also filed as: DREES STEFAN
8 granted patents·68 citations·filing 2002–2022
82Inventor score
Files withEVONIK OPERATIONS GMBH3LUEKEN HANS-GERD2OXENO OLEFINCHEMIE GMBH2EVONIK OXENO GMBH & CO KG1
Top patents by PatentIndex Score
8 records- 0194US6720457B2Process for the hydroformylation of higher olefins using cobalt compounds as catalystOXENO OLEFINCHEMIE GMBH·Filed 2002·Granted Apr 13, 2004·39 cites·20 claims
- 0293US7179947B2Process for the hydroformylation of olefinsOXENO OLEFINCHEMIE GMBH·Filed 2005·Granted Feb 20, 2007·15 cites·16 claims
- 0387US8138379B2One-stage continuous process for hydroformylating higher olefins or olefin mixturesLUEKEN HANS-GERD·Filed 2008·Granted Mar 20, 2012·8 cites·13 claims
- 0480US8129571B2Multistage continuous process for the hydroformylation of higher olefins or olefin mixturesLUEKEN HANS-GERD·Filed 2008·Granted Mar 6, 2012·6 cites·10 claims
- 0564US11820739B2Process for preparing aldehydes and cooling a stream of matterEVONIK OPERATIONS GMBH·Filed 2022·Granted Nov 21, 2023·0 cites·20 claims
- 0660US11773041B2Process for preparing aldehydes and cooling a stream of matterEVONIK OPERATIONS GMBH·Filed 2022·Granted Oct 3, 2023·0 cites·20 claims
- 0754US12296301B2Variable, self-regulating permeate recycling in organophilic nanofiltrationEVONIK OXENO GMBH & CO KG·Filed 2021·Granted May 13, 2025·0 cites·20 claims
- 0854US11806669B2Variable and self-regulating permeate recycling in organophilic nanofiltrationEVONIK OPERATIONS GMBH·Filed 2021·Granted Nov 7, 2023·0 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when Stefan Drees 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 →