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. 21, 2004
Filed:
Dec. 20, 2002
Applicant:
Inventors:
Sham N. Redkar, Bound Brook, NJ (US);
James R. Schleck, Somerset, NJ (US);
Vilas M. Chopdekar, Edison, NJ (US);
Assignee:
Jame Fine Chemicals, Inc., Bound Brook, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 3/17024 ; C07H 1/302 ; C07C 6/988 ;
U.S. Cl.
CPC ...
A61K 3/17024 ; C07H 1/302 ; C07C 6/988 ;
Abstract
The invention pertains to a method for preparing pseudoephedrine tannate by reacting pseudoephedrine free base at a temperature of about 70 to about 110° C. with tannic acid neat or as an aqueous slurry containing about 5 to about 30 wt. % water.