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:
Aug. 27, 2002
Filed:
Mar. 08, 2001
Applicant:
Inventors:
Assignee:
Degussa AG, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract
A process for the production of &agr;-tocopherol acetate in a recirculating process by condensation of trimethylhydroquinone and isophytol in the presence of a catalyst system of a zinc halide and an aqueous protonic acid and, optionally, an elemental metal, in a polar solvent/water mixture extractable or miscible with water, and subsequent acylation of the resultant &agr;-tocopherol and recirculation of the catalyst system.
Krill, Steffen. (2002). Process for the production of &agr;-tocopherol acetate by condensation of trimethylhydroquinone with isophytol with recycling of an acetic catalyst solution (U.S. Patent No. 6441199). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6441199
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile