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:
Jun. 26, 2012
Filed:
May. 18, 2005
Walter C. Babcock, Bend, OR (US);
Dwayne T. Friesen, Bend, OR (US);
David Keith Lyon, Bend, OR (US);
Warren Kenyon Miller, Bend, OR (US);
Daniel Tod Smithey, Bend, OR (US);
Walter C. Babcock, Bend, OR (US);
Dwayne T. Friesen, Bend, OR (US);
David Keith Lyon, Bend, OR (US);
Warren Kenyon Miller, Bend, OR (US);
Daniel Tod Smithey, Bend, OR (US);
Bend Research, Inc., Bend, OR (US);
Abstract
Disclosed are polymers of hydroxypropyl methyl cellulose acetate succinate (HPMCAS) and hydroxypropyl methyl cellulose acetate (HPMCA) with unique degrees of substitution of hydroxypropoxy, methoxy, acetyl, and succinoyl groups. When used in making compositions comprising a low-solubility drug and such polymers, the polymers provide enhanced aqueous concentrations and/or improved physical stability.