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:
Jul. 29, 2003
Filed:
Jun. 19, 2001
Judith Louise Erb, Ann Arbor, MI (US);
Nallaperumal Chidambaram, Dearborn Heights, MI (US);
James Germain Downward, IV, Ann Harbor, MI (US);
IA, Inc., Ann Arbor, MI (US);
Abstract
A testing apparatus having an absorbent matrix , including a membrane which contains a plurality of counter-ions Chromionophore (or fluorionophore)s and affinophores compete to carry ions into the membrane and neutralize the charge of the counter-ions Biological recognition molecules bind to a portion of the affinophores and prevent them from entering the membrane thereby allowing more chromionophore (or fluorionophore)s to enter the membrane The portion of affinophores bound to the biological recognition molecules is inversely proportional to the amount or concentration of analyte occurring within the solution or medium The result of this is that the color of the membrane-covered matrix changes in a manner related to the concentration of the analyte. One application of this apparatus is a strip test for prediction of ovulation.