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:
Oct. 09, 1990
Filed:
Jun. 10, 1988
Applicant:
Inventors:
Axel Paul, Mannheim, DE;
Peter Tonne, Neustadt, DE;
Eckhard Roske, Ludwigshafen, DE;
Hardo Siegel, Speyer, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562575 ;
Abstract
A pure D- or L-alanine enantiomer is prepared by reacting an optically active chloropropionic acid with ammonia in water or a water/alcohol mixture at from 50.degree. to 110.degree. C.
Paul, Axel. (1990). Preparation of d- or l-alanine or high enantiomeric purity (U.S. Patent No. 4962231). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4962231
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile