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:
Jul. 03, 1990
Filed:
Nov. 14, 1988
Applicant:
Inventor:
Christian Fizet, Zimmersheim, FR;
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07J / ;
U.S. Cl.
CPC ...
549413 ; 552545 ;
Abstract
A novel process for the concentration of natural tocopherols and/or steroids in materials derived from natural sources by treating this material with calcium hydroxide in the presence of water in an inert water-miscible organic solvent and subsequently separating from this material the thus-formed calcium salts.
Fizet, Christian. (1990). Concentration of natural ingredients from natural materials (U.S. Patent No. 4939276). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4939276
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile