Inventor · disambiguated record
Dirk Manzel
Also filed as: MANZEL DIRK
7 granted patents·6 citations·filing 2015–2019
71Inventor score
Top patents by PatentIndex Score
7 records- 0188US10577311B2Method for producing isocyanatesCOVESTRO DEUTSCHLAND AG·Filed 2016·Granted Mar 3, 2020·5 cites·17 claims
- 0279US10947187B2Method for producing methylene-diphenylene-diisocyanates and polymethylene-polyphenylene-polyisocyanatesCOVESTRO INTELLECTUAL PROPERTY GMBH & CO KG·Filed 2019·Granted Mar 16, 2021·1 cites·14 claims
- 0344US10364214B1Method for producing isocyanatesCOVESTRO DEUTSCHLAND AG·Filed 2017·Granted Jul 30, 2019·0 cites·15 claims
- 0443US11213867B2Method for cleaning phosgene conducting apparatusCOVESTRO DEUTSCHLAND AG·Filed 2018·Granted Jan 4, 2022·0 cites·15 claims
- 0542US11365172B2Production plant for producing a chemical product by reacting H-functional reactants with phosgene, and method for operating same with an interruption to productionCOVESTRO DEUTSCHLAND AG·Filed 2018·Granted Jun 21, 2022·0 cites·17 claims
- 0640US10280135B2Method for producing isocyanatesCOVESTRO DEUTSCHLAND AG·Filed 2016·Granted May 7, 2019·0 cites·16 claims
- 0739US9815703B2Method for starting up and shutting down a phosgene generatorCOVESTRO DEUTSCHLAND AG·Filed 2015·Granted Nov 14, 2017·0 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when Dirk Manzel 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 →