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. 19, 2026
Filed:
Mar. 17, 2021
Applicant:
Ilab, Bucheon-si, KR;
Inventor:
Suk Ho Lee, Hwaseong-si, KR;
Assignee:
ILAb, Bucheon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 311/30 (2006.01); A61K 31/352 (2006.01); C07C 65/24 (2006.01); C07C 311/30 (2006.01);
U.S. Cl.
CPC ...
C07C 311/30 (2013.01); A61K 31/352 (2013.01); C07C 65/24 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present invention relates to a method for preparing 2-(2,5-difluorophenyl)-3-carboxy-7-chloro-(4H)-4-benzopyranone represented by formula 1 below, a novel intermediate used therein, and a method for preparing the same. Specifically, an object of the present invention is to provide a novel preparation method, in which the compound of formula 1 below can be efficiently and economically synthesized and can be mass-produced in a high yield.
Lee, Suk. (2026). Method for producing benzopyranone compound and novel intermediate used therein (U.S. Patent No. 12630503). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12630503
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile