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:
Aug. 16, 2005
Filed:
Feb. 04, 2000
Cynthia M. Ciliberto, Port Deposit, MD (US);
Kenneth M. Feld, Chalfont, PA (US);
Donna M. Heren, Yardley, PA (US);
Cynthia M. Ciliberto, Port Deposit, MD (US);
Kenneth M. Feld, Chalfont, PA (US);
Donna M. Heren, Yardley, PA (US);
Aventis Pharmaceuticals Inc., Bridgewater, NJ (US);
Abstract
A dissolution test sample holder for testing topical formulations for dermal and/or transdermal drug delivery is disclosed. The holder has a cylinder tubular body with an end cap removably attached to one end. The end cap has a peripheral wall which frictionally engages the body to hold the end cap in place. A flange extends perpendicularly from the peripheral wall inwardly defining an aperture in the end cap and providing a support surface for a membrane held within the end cap. A ring is positioned within the end cap on the membrane, the membrane being sandwiched between the ring and the support surface. The ring protects the membrane by preventing contact between it and the body and provides a volume for holding the test sample in contact with the membrane.