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:
Jan. 08, 2019
Filed:
Feb. 20, 2014
Applicant:
Takeda Pharmaceutical Company Limited, Osaka, JP;
Inventors:
Naohiro Fukuda, Osaka, JP;
Tomomi Ikemoto, Osaka, JP;
Assignee:
TAKEDA PHARMACEUTICAL COMPANY LIMITED, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 403/04 (2006.01); C07D 231/12 (2006.01); C07D 403/10 (2006.01);
U.S. Cl.
CPC ...
C07D 403/04 (2013.01); C07D 231/12 (2013.01); C07D 403/10 (2013.01);
Abstract
The present invention provides an industrially advantageous method of producing a pyridazinone compound. The present invention relates to the following method of producing a pyridazinone compound: Formula (II), (IIIa), (IV) or (IV″), Formula (IIIb), (Vb) or (V″b), Formula (VI), (I) or (I″), wherein each symbol is as described in the specification.