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. 19, 1978
Filed:
Apr. 19, 1977
Applicant:
Inventors:
Harris E Petree, Kernersville, NC (US);
Hal L Myatt, Greensboro, NC (US);
Alex M Jelenevsky, Nashville, NC (US);
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562448 ;
Abstract
A process for the preparation of phenolic ethylenediamine polycarboxylic acids in predominantly the ortho isomeric form which comprises reacting a phenol compound, ethylenediamine, glyoxylic acid and a base, said phenol compound functioning both as a reactant and as the sole solvent for the reaction system. The product can then be isolated or directly reacted with an iron salt to form the corresponding iron chelate.
Petree, Harris. (1978). Preparation of phenolic ethylenediaminepolycarboxylic acids (U.S. Patent No. 4130582). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4130582
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile