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Werner Pietzonka
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Therwil, CH
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Patents Grants
last 30 patents
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Patent Grant
Process for the rectification of mixtures of high-boiling air- and/...
Patent number
8,747,621
Issue date
Jun 10, 2014
DSM IP Assets B.V.
Juan Herguijuela
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the rectification of mixtures of high-boiling air- and/...
Patent number
8,420,838
Issue date
Apr 16, 2013
DSM IP Assets B.V.
Juan Herguijuela
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the working-up of a vitamin E- and vitamin E-acetate-co...
Patent number
8,414,850
Issue date
Apr 9, 2013
DSM IP Assets B.V.
Werner Pietzonka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the working-up of a vitamin E- and vitamin E-acetate- c...
Patent number
8,183,396
Issue date
May 22, 2012
DSM IP Assets B.V.
Werner Pietzonka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the rectification of mixtures of high-boiling air-and/o...
Patent number
7,858,813
Issue date
Dec 28, 2010
DSM IP Assets B.V.
Juan Herguijuela
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
PROCESS FOR THE RECTIFICATION OF MIXTURES OF HIGH-BOILING AIR- AND/...
Publication number
20130284581
Publication date
Oct 31, 2013
DSM IP Assets B. V.
Juan Herguijuela
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
PROCESS FOR THE WORKING-UP OF A VITAMIN E- AND VITAMIN E-ACETATE-CO...
Publication number
20120156107
Publication date
Jun 21, 2012
DSM IP Assets B.V.,
Werner PIETZONKA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for the working-up of a vitamin E- and vitamin E-acetate- c...
Publication number
20090287002
Publication date
Nov 19, 2009
Werner Pietzonka
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process For the Rectification of Mixtures of High-Boiling Air-and/o...
Publication number
20080194846
Publication date
Aug 14, 2008
DSM IP Assets B. V.
Juan Herguijuela
C07 - ORGANIC CHEMISTRY