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:
Sep. 15, 2026
Filed:
Oct. 06, 2021
Amgen Inc., Thousand Oaks, CA (US);
Matthew G. Beaver, Natick, MA (US);
Michael T. Corbett, San Carlos, CA (US);
Yuanqing Fang, Belmont, MA (US);
David D. Ford, Cambridge, MA (US);
Andrew T. Parsons, Cambridge, MA (US);
Gabrielle St-Pierre, Thousand Oaks, CA (US);
Reem Telmesani, Brighton, MA (US);
Amgen Inc., Thousand Oaks, CA (US);
Abstract
Provided herein is a process comprising heating a composition comprising (P)-compound A or a salt thereof and a solvent to a temperature of 250° C. to 350° C. to form racemized compound A. Also provided is a process for isolating (P)-compound A from a composition comprising (P)-compound A and a tartrate, as described herein. Further provided herein, is a process for isolating a free acid of a tartrate or a hydrate thereof from a composition comprising a tartrate, (P)-compound A, and an organic solvent.