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:
May. 17, 1994
Filed:
Mar. 05, 1993
Applicant:
Inventor:
David Laffan, Visp, CH;
Assignees:
Lonza Ltd., Gampel/Valais, CH;
Sankyo Company Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568765 ;
Abstract
The substituted pentaalkylchromans of the general formula: ##STR1## wherein R denotes a lower alkyl group having 1 to 4 C atoms and Hal denotes chlorine, bromine or iodine, are novel intermediates for the preparation of hypolipidaemic pharmaceuticals. A process for their preparation is described in which a trialkylhydroquinone is reacted with a halogenated butenol to give a substituted tetraalkylhydroquinone, which is finally cyclized to the final product.
Laffan, David. (1994). Substituted pentaalkylchromans (U.S. Patent No. 5313007). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5313007
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile