The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2018
Filed:
Nov. 25, 2016
Applicants:
Joerg-joachim Nitz, Essen, DE;
Stephan Kohlstruk, Gladbeck, DE;
Robert Jansen, Bottrop, DE;
Anja Mueller, Dortmund, DE;
Jan Cassens, Recklinghausen, DE;
Axel Hengstermann, Senden, DE;
Inventors:
Joerg-Joachim Nitz, Essen, DE;
Stephan Kohlstruk, Gladbeck, DE;
Robert Jansen, Bottrop, DE;
Anja Mueller, Dortmund, DE;
Jan Cassens, Recklinghausen, DE;
Axel Hengstermann, Senden, DE;
Assignee:
Evonik Degussa GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 253/34 (2006.01);
U.S. Cl.
CPC ...
C07C 253/34 (2013.01);
Abstract
The present invention relates to the fine purification of isophoronenitrile (IPN) by melt crystallization.