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:
Mar. 01, 2011
Filed:
May. 18, 2004
Jaber G. Qasem, Portage, MI (US);
Sumner H. Cathcart, Mattawan, MI (US);
Jack T. Irwin, Kalamazoo, MI (US);
Jaber G. Qasem, Portage, MI (US);
Sumner H. Cathcart, Mattawan, MI (US);
Jack T. Irwin, Kalamazoo, MI (US);
L. Perrigo Company, Allegan, MI (US);
Abstract
A compressible extended release tablet or tablet layer having a drug release profile that is not strongly dependent on tablet hardness may be prepared by dry blending a pharmaceutically active ingredient with hydroxypropyl methylcellulose, wherein the hydroxypropyl methylcellulose has a bimodal or multimodal number average molecular weight distribution that includes at least one mode over 20,000 Daltons and at least one mode under 10,000 Daltons. An additional advantage of the invention is that the tablet formulations may be prepared without resort to wet granulation.