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:
Apr. 16, 2024
Filed:
Apr. 03, 2020
Applicant:
Dsm Ip Assets B.v., Heerlen, NL;
Inventors:
Fabrice Aquino, Kaiseraugst, CH;
Werner Bonrath, Kaiseraugst, CH;
Marc-André Mueller, Kaiseraugst, CH;
Bettina Wuestenberg, Kaiseraugst, CH;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 49/21 (2006.01); C07C 45/67 (2006.01);
U.S. Cl.
CPC ...
C07C 49/21 (2013.01); C07C 45/67 (2013.01); C07C 2601/16 (2017.05);
Abstract
The application relates to a process for the preparation of a compound of formula (II) by cyclisation of a polyene of formula (I), and to an intermediate of formula (III). The obtained compounds are useful intermediates in the preparation of specific isoprenoids, preferably in the production of vitamin A and derivatives of vitamin A.
Aquino, Fabrice. (2024). Process for the preparation of intermediates for the synthesis of vitamin a derivatives from polyenes by cyclisation (U.S. Patent No. 11958797). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11958797
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile