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:
Feb. 13, 1996
Filed:
Apr. 15, 1994
Vivien H Mak, Menlo Park, CA (US);
Michael L Francoeur, Los Altos, CA (US);
Pharmetrix Corporation, Menlo Park, CA (US);
Abstract
A diffusion test apparatus (2), used to test diffusion of a drug within a vehicle through a test membrane (8), includes a receiver assembly (6) and a donor assembly (4) secured to one another. The receiver assembly includes a number of open-top receiver receptacles (26) arranged in a chosen pattern along its face (12). Similarly, the donor assembly includes a number of open-top donor receptacles (38) arranged along its face (10) in a mirror image of the chosen pattern. The test membrane is captured between the receiver and donor faces. The drug diffuses through the test membrane and into the receiver liquid (53) during an incubation period (62). Samples (66) of the receiver liquid are preferably automatically transferred to a conventional microtiter plate (70) using a programmed liquid transfer system for assay by a scintillation counter (76).