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. 07, 2002
Filed:
Apr. 20, 2001
Applicant:
Inventors:
Jean-Erick Ancel, Saint Genis Laval, FR;
Pierre Meilland, Chaponost, FR;
Assignee:
Aventis Animal Nutrition, S.A., Antony, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 6/700 ; C07C 4/711 ;
U.S. Cl.
CPC ...
C07C 6/700 ; C07C 4/711 ;
Abstract
The invention relates to a process for making vitamin A from ethynyl-retro-&agr;-ionol using an allene acetate as intermediate.
Ancel, Jean-Erick. (2002). Method for preparing vitamin a (U.S. Patent No. 6384270). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6384270
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile