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:
Sep. 24, 2019
Filed:
Jul. 20, 2018
Applicant:
Wista Laboratories Ltd., Singapore, SG;
Inventors:
James Peter Sinclair, Old Aberdeen, GB;
Sarah Louise Nicoll, Old Aberdeen, GB;
John Mervyn David Storey, Old Aberdeen, GB;
Assignee:
WISTA LABORATORIES LTD., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 279/18 (2006.01); C07C 381/02 (2006.01);
U.S. Cl.
CPC ...
C07D 279/18 (2013.01); C07C 381/02 (2013.01);
Abstract
Methods of synthesizing and purifying certain 3,7-diamino-phenothiazin-5-ium compounds (referred to herein as 'diaminophenothiazinium compounds') including Methylthioninium Chloride (MTC) (also known as Methylene Blue) are provided.