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:
Dec. 17, 2024
Filed:
Mar. 02, 2022
Applicant:
United Therapeutics Corporation, Silver Spring, MD (US);
Inventors:
Hitesh Batra, Herndon, VA (US);
Liang Guo, Vienna, VA (US);
Patrick Poisson, Chapel Hill, NC (US);
Susovan Jana, Rockville, MD (US);
Assignee:
United Therapeutics Corporation, Silver Spring, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 471/04 (2006.01); A01N 43/90 (2006.01); A61K 9/00 (2006.01); A61K 9/14 (2006.01); A61K 31/5575 (2006.01); A61K 45/06 (2006.01);
U.S. Cl.
CPC ...
A61K 9/14 (2013.01); A61K 9/0075 (2013.01); A61K 31/5575 (2013.01); A61K 45/06 (2013.01);
Abstract
Provided are treprostinil derivatives with a reduced ability to form undesired impurities in a pharmaceutical formulation, such as a dry powder formulation, further containing a carboxyl group containing inactive ingredient, such as fumaryl diketopiperazine.