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:
Feb. 24, 1981
Filed:
Jan. 12, 1979
Applicant:
Inventors:
Assignee:
Kuraray Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603455 ;
Abstract
dl-.alpha.-Tocopherol is prepared by condensing trimethylhydroquinone with phytyl halide in a chlorinated lower aliphatic hydrocarbon solvent, in the presence of metallic tin and a Friedel-Crafts catalyst.
Shiono, Manzo. (1981). Preparation of dl-.alpha.-tocopherol (U.S. Patent No. 4252726). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4252726
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile