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:
Nov. 25, 2025
Filed:
Mar. 22, 2021
Applicant:
Dsm Ip Assets B.v., Heerlen, NL;
Inventors:
Werner Bonrath, Kaiseraugst, CH;
Marc-André Mueller, Kaiseraugst, CH;
Bettina Wuestenberg, Kaiseraugst, CH;
Viktor Zimmermann, Kaiseraugst, CH;
Assignee:
DSM IP ASSETS B.V., Maastricht, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 333/48 (2006.01);
U.S. Cl.
CPC ...
C07D 333/48 (2013.01);
Abstract
The present invention relates to a new process for the production of new specific intermediates, which are preferably used in the production of vitamin A, vitamin A acetate, or β-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin.