Willem Koelewijn

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Zwolle, NL

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Patents Grantslast 30 patents

Information Patent Grant
Acidizing treatment fluid for delayed acidification in the oil fiel...
- Patent number 11,912,937
- Issue date Feb 27, 2024
- NOURYON CHEMICALS INTERNATIONAL B.V.
- Willem Koelewijn
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the purification of a liquid feed comprising MCA and DCA
- Patent number 9,505,694
- Issue date Nov 29, 2016
- Akzo Nobel Chemicals International B.V.
- Melle Rinze Nieuwhof
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrochemical process to prepare a halogenated carbonyl group-con...
- Patent number 7,918,987
- Issue date Apr 5, 2011
- Akzo Nobel N.V.
- Hans Lammers
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Phlegmatization of cyclic ketone peroxides
- Patent number 6,358,435
- Issue date Mar 19, 2002
- Akzo Nobel N.V.
- Pieter Schuurman
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
ACIDIZING TREATMENT FLUID FOR DELAYED ACIDIFICATION IN THE OIL FIEL...
- Publication number 20230220271
- Publication date Jul 13, 2023
- NOURYON CHEMICALS INTERNATIONAL B.V.
- Willem KOELEWIJN
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
PROCESS FOR THE PURIFICATION OF A LIQUID FEED COMPRISING MCA AND DCA
- Publication number 20140275625
- Publication date Sep 18, 2014
- Akzo Nobel Chemicals International B.V.
- Melle Rinze Nieuwhof
- C07 - ORGANIC CHEMISTRY
Information Patent Application
ELECTROCHEMICAL PROCESS TO PREPARE A HALOGENATED CARBONYL GROUP-CON...
- Publication number 20090107849
- Publication date Apr 30, 2009
- Hans Lammers
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR