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:
Oct. 13, 2020
Filed:
Apr. 18, 2017
Applicant:
Yonsung Fine Chemical Co., Ltd., Hwaseong-si, Gyeonggi-do, KR;
Inventors:
Hyun Ik Shin, Yongin-si, KR;
Hyoseon Lee, Bucheon-si, KR;
Kyung Jin Lee, Suwon-si, KR;
Kee Young Lee, Seoul, KR;
Changyoung Oh, Seongnam-si, KR;
Assignee:
YONSUNG FINE CHEMICAL CO., LTD., Hwaseong-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 35/37 (2006.01); C07C 405/00 (2006.01); C07D 317/44 (2006.01); C07C 59/72 (2006.01); C07B 51/00 (2006.01);
U.S. Cl.
CPC ...
C07C 405/0083 (2013.01); C07C 35/37 (2013.01); C07D 317/44 (2013.01); C07B 51/00 (2013.01); C07C 59/72 (2013.01); C07C 2603/14 (2017.05); Y02P 20/55 (2015.11);
Abstract
The present invention relates to a cost-effective and efficient method for preparing treprostinil with high purity, and an intermediate therefor.