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:
May. 03, 1994
Filed:
Apr. 13, 1992
Applicant:
Inventors:
Quan Zhou, Newton Centre, MA (US);
Mary E Tabacco, Brighton, MA (US);
Bruce N Nelson, South Boston, MA (US);
Assignee:
Geo-Centers, Inc., Newton Centre, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 39 ; 422 8206 ; 422 8207 ; 422 8208 ; 422 8211 ; 427-2 ; 436 41 ; 436111 ; 436113 ; 436134 ; 436142 ; 436166 ; 436172 ;
Abstract
A device for detecting the presence or concentration of an analyte, a method of making the device, and a method of detecting the presence or concentration of an analyte. The invention features one or more supports, such as beads, which carry a thin film of polymer substrate. The polymer substrate has a sensing reagent and a porous matrix. The sensing reagent alters the optical properties of the polymer substrate in the presence of analyte.