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. 21, 2006
Filed:
Jul. 24, 2003
Applicant:
Norman Milstein, Cincinnati, OH (US);
Inventor:
Norman Milstein, Cincinnati, OH (US);
Assignee:
Cognis Corporation, Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 311/72 (2006.01);
U.S. Cl.
CPC ...
Abstract
Processes for preparing color-stable, low-impurity tocopherol compositions are described, wherein the processes comprise: (a) providing a protecting group-substituted tocopherol compound, for example an acetate of a natural-source tocopherol compound; (b) purifying the protecting group-substituted tocopherol compound, for example through crystallization; and (c) solvolyzing the purified compound to form free tocopherol. Also described are the tocopherol compositions prepared thereby.