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:
Aug. 27, 2019
Filed:
Oct. 13, 2015
Applicant:
Siegfried Ag, Zofingen, CH;
Inventors:
Beat Theodor Weber, Gualala, CA (US);
Lionel Roux, Hegenheim, FR;
Assignee:
Siegfried AG, Zofingen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 489/12 (2006.01); A61K 31/485 (2006.01);
U.S. Cl.
CPC ...
A61K 31/485 (2013.01); C07D 489/12 (2013.01);
Abstract
The invention relates to an improved method of preparing buprenorphine, a salt thereof, analogs of buprenorphine and their salts. In particular, the invention relates to a method of preparing buprenorphine and related products and salts in economic and ecologic ways having increased yields.