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:
Jul. 13, 2004
Filed:
Mar. 31, 2003
Daniel James Adams, Cuyahoga Falls, OH (US);
David William Weaver, Avon Lake, OH (US);
William R. Wilber, Avon Lake, OH (US);
Jian-Hwa Guo, Hudson, OH (US);
Edward S. Greenberg, Solon, OH (US);
Noveon IP Holdings Corp., Cleveland, OH (US);
Abstract
The present invention pertains to a method for forming polyacrylic acid granules and granules formed therefrom wherein the granules are flowable, have an increased bulk density relative to the as polymerized polyacrylic acids, and a low amount of dust which is generally characterized herein as particles which pass through a 325 mesh screen. The granules formed by the method of the present invention can be used to prepare controlled release tablets, especially controlled release pharmaceutical tablets. The controlled release properties of the tablets formed from granules prepared according to the present invention are unexpectedly better than tablets prepared from granules formed by other known granulation methods.