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:
Sep. 23, 2014
Filed:
Sep. 24, 2010
Peter N. Nugara, Richmond, VA (US);
Bruce C. Begnoche, Midlothian, VA (US);
Stephen K. Franzyshen, Richmond, VA (US);
Fenghua Deng, Richmond, VA (US);
Daniel C. Sanders, Richmond, VA (US);
Christine A. Creegan, Richmond, VA (US);
Steven R. Cosentino, Quinton, VA (US);
Peter N. Nugara, Richmond, VA (US);
Bruce C. Begnoche, Midlothian, VA (US);
Stephen K. Franzyshen, Richmond, VA (US);
Fenghua Deng, Richmond, VA (US);
Daniel C. Sanders, Richmond, VA (US);
Christine A. Creegan, Richmond, VA (US);
Steven R. Cosentino, Quinton, VA (US);
DuPont Teijin Films U.S. Limited Partnership, Chester, VA (US);
Abstract
A composite structure suitable for making transdermal delivery devices includes in sequence: (a) a liner film layer; (b) a containment layer having from zero to 15 wt % content of vinyl acetate repeating units, the layer including either a thermal bonding copolyester resin or a combination of an ethylene-vinyl acetate component and a nonpolar polymer; and (c) a polyester film layer less than 20 μm in thickness. A drug layer lies either between the liner film layer and the containment layer or within a concave depression in the containment layer. A composition including an ethylene-vinyl acetate component and an ABA block copolymer, wherein the A segments of the block copolymer are styrenic segments, is also provided. The composition includes between 1 and 15 wt % of vinyl acetate repeating units, based on the total weight of composition exclusive of any solvents.