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:
Mar. 19, 1991
Filed:
Feb. 13, 1989
Applicant:
Inventors:
Masao Nakano, Hyogo, JP;
Miaki Asakawa, Himeji, JP;
Yusei Nagamura, Himeji, JP;
Akio Fukui, Fujisawa, JP;
Yoichi Nakagawa, Takarazuka, JP;
Assignee:
Nippon Shokubai Kagaku Kogyo Company, Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
556131 ; 562579 ; 562582583 ; 562585 ; 562587 ; 562589 ; 252 891 ;
Abstract
A preparation of metallic salt of ethercarboxylic acid in a pure form by restraining the formation of fumaric acid likely to occur when maleic acid and/or maleic anhydride react with oxycarboxylic acid. The ethercarboxylic product is a useful chelating agent.
Nakano, Masao. (1991). Process for producing metallic salt of ethercarboxylic acid (U.S. Patent No. 5001245). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5001245
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile