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:
Feb. 27, 1990
Filed:
Mar. 01, 1988
Applicant:
Inventors:
Tetsuya Aono, Nagaokakyo, JP;
Katsutoshi Mizuno, Toyonaka, JP;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
514456 ; 549401 ;
Abstract
A novel chromone derivative having a strong antitumor activity of the general formula: ##STR1## wherein R.sup.1 is an unsaturated alkyl or cycloalkyl group having 3 to 7 carbon atoms; R.sup.2 is hydrogen atom or a halogen atom; R.sup.3 is hydrogen atom or a lower alkyl group; and X is carboxyl group, or its salt, ester or amide.
Aono, Tetsuya. (1990). Chromone derivatives useful as antitumor agents (U.S. Patent No. 4904690). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4904690
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile