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:
Jan. 07, 2014
Filed:
Apr. 13, 2008
Applicants:
Peter X. MA, Ann Arbor, MI (US);
Xiaohua Liu, Ann Arbor, MI (US);
Laurie Mccauley, Ann Arbor, MI (US);
Inventors:
Peter X. Ma, Ann Arbor, MI (US);
Xiaohua Liu, Ann Arbor, MI (US);
Laurie McCauley, Ann Arbor, MI (US);
Assignee:
The Regents of The University of Michigan, Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F 2/00 (2006.01); B29C 33/40 (2006.01); A01N 61/00 (2006.01); A61K 39/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A delivery device includes a hollow container, and a plurality of biodegradable and/or erodible polymeric layers established in the container. A layer including a predetermined substance is established between each of the plurality of polymeric layers, whereby degradation of the polymeric layer and release of the predetermined substance occur intermittently. Methods for forming the device are also disclosed herein.