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:
Nov. 03, 2020
Filed:
Sep. 03, 2019
Applicant:
Eisai R&d Management Co., Ltd., Tokyo, JP;
Inventors:
Taiju Nakamura, Kamisu, JP;
Taichi Abe, Kamisu, JP;
Yusuke Miyashita, Kamisu, JP;
Hirofumi Kuroda, Kamisu, JP;
Yusuke Ayata, Kamisu, JP;
Atsushi Akao, Kamisu, JP;
Assignee:
Eisai R&D Management Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 215/48 (2006.01); A61P 35/00 (2006.01); A61K 31/47 (2006.01);
U.S. Cl.
CPC ...
C07D 215/48 (2013.01); A61P 35/00 (2018.01); A61K 31/47 (2013.01);
Abstract
Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.