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. 16, 2016
Filed:
Dec. 12, 2014
Applicant:
Mallinckrodt Llc, Hazelwood, MO (US);
Inventors:
Peter X. Wang, Creve Coeur, MO (US);
Robert E. Halvachs, Belleville, IL (US);
Kevin R. Roesch, Godfrey, IL (US);
Henry J. Buehler, St. Louis, MO (US);
Joseph P. Haar, Jr., Edwardsville, IL (US);
Gary L. Cantrell, Troy, IL (US);
Assignee:
Mallinckrodt LLC, Hazelwood, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 31/485 (2006.01); C07D 489/02 (2006.01);
U.S. Cl.
CPC ...
A61K 31/485 (2013.01); C07D 489/02 (2013.01); Y02P 20/582 (2015.11);
Abstract
An improved process for the N-alkylation of tertiary morphinan alkaloid bases to form the corresponding quaternary morphinan alkaloid derivatives.