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. 06, 2026
Filed:
Jun. 14, 2022
Applicant:
Regeneron Pharmaceuticals, Inc., Tarrytown, NY (US);
Inventors:
Assignee:
Regeneron Pharmaceuticals, Inc., Tarrytown, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N 30/72 (2006.01); G01N 30/06 (2006.01); G01N 33/68 (2006.01);
U.S. Cl.
CPC ...
G01N 30/7233 (2013.01); G01N 30/06 (2013.01); G01N 33/6848 (2013.01);
Abstract
The present invention generally pertains to methods of quantifying free fatty acids in a pharmaceutical formulation. In particular, the present invention pertains to a method of quantifying free fatty acids released from polysorbate hydrolysis in a pharmaceutical formulation comprising a pharmaceutical product, polysorbate and free fatty acids, using liquid chromatography-mass spectrometry, without the use of an extraction step.