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:
Nov. 20, 2001
Filed:
Jul. 16, 1998
Robert J. Markovsky, Amesbury, MA (US);
Cheryl A. Boyer, Malden, MA (US);
Stanley E. Charm, Boston, MA (US);
Paul R. Donahue, Southboro, MA (US);
Yael Agi Glickman, Moshav Tsofit, IL;
Steven J. Saul, Arlington, MA (US);
Joan L. Scheemaker, Chelmsford, MA (US);
Richard T. Skiffington, North Reading, MA (US);
Shefali B. Trivedi, Quincy, MA (US);
Eliezer Zomer, Newton, MA (US);
Charm Sciences, Inc., Lawrence, MA (US);
Abstract
A test device for detecting the presence of a residue analyte in a sample includes a support strip and a sample-absorbing matrix attached to the support strip. The sample-absorbing matrix has a material for absorbing an amount of the sample. The test device also includes a mobile-phase support for holding a mobile-phase composition. The mobile-phase support is attached to the support strip and in contact with the sample-absorbing matrix. A mobile-phase composition is disposed on the mobile-phase support and has a receptor for binding with the analyte. The mobile-phase composition can be carried in the sample. A stationary-phase membrane is attached to the support strip and has a first membrane end in contact with the mobile-phase composition and a second membrane end. The membrane allows lateral capillary flow of the sample from the first membrane end to the second membrane end. A test zone is on the stationary-phase membrane between the first membrane end and second membrane end and having a first binder for binding with an unbound receptor. A control zone is the stationary-phase a membrane between the test zone and second membrane end and has a second binder for binding with an analyte-bound receptor or residual unbound receptor.