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:
Dec. 06, 1988
Filed:
Mar. 27, 1987
Applicant:
Inventors:
David L Coffen, Glen Ridge, NJ (US);
Rudolf Schmid, Munchenstein, CH;
Mark J Sebastian, Plainfield, NJ (US);
Assignee:
Hoffman-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549407 ; 549408 ; 549274 ; 560261 ;
Abstract
6-Etherified hydroxy -2-(4',8',12'-trimethyl-5'-tridecenyl)-2,5,7,8-tetramethylchromans with an oxo or hydroxy substituent at the 2' position which may be substituted with an arylsulfonyl or a carboxyalkyl at the 3' position and containing a single or double bond at the 11 position, said chromans being intermediates for producing natural vitamin E.