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:
Jun. 20, 2023
Filed:
Apr. 29, 2021
Applicant:
Waters Technologies Corporation, Milford, MA (US);
Inventors:
Jinchuan Yang, Hopkinton, MA (US);
Paul Rainville, Princeton, MA (US);
Assignee:
Waters Technologies Corporation, Milford, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D 15/38 (2006.01); B01D 15/40 (2006.01);
U.S. Cl.
CPC ...
B01D 15/3833 (2013.01); B01D 15/40 (2013.01);
Abstract
The present disclosure provides methods for the separation and quantitation of enantiomers of vitamin E using supercritical fluid chromatography (SFC) or carbon dioxide-based chromatography on chiral columns. The disclosed methods may be used to quantitatively determine the concentration of RRR-α-tocopherol in foods, food ingredients, dietary supplements, vitamin premixes, nutritional formulas, and medicines. Further provided is a method of differentiating the source of α-tocopherol as natural or synthetic.