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:
Sep. 26, 2006
Filed:
Apr. 11, 2003
Jared Starling, Mansfield, OH (US);
Prasad S. Khadkikar, Lexington, OH (US);
Robert Sterken, Mansfield, OH (US);
Charles L. Volz, Mansfield, OH (US);
Edward J. Blok, Wadsworth, OH (US);
Donald E. Donnelly, Fenton, MO (US);
Jared Starling, Mansfield, OH (US);
Prasad S. Khadkikar, Lexington, OH (US);
Robert Sterken, Mansfield, OH (US);
Charles L. Volz, Mansfield, OH (US);
Edward J. Blok, Wadsworth, OH (US);
Donald E. Donnelly, Fenton, MO (US);
Therm-O-Disc, Incorporated, Mansfield, OH (US);
Abstract
A chemiresistor sensor probe for detecting target analytes. The probe includes a body having a first control surface and a second control surface recessed within the first. A sensor film comprises numerous conductive particles disposed upon the second surface. The film swells upon absorbing one or more analytes for which it has an affinity, thus causing the conductive particles to become more dispersed and increasing the resistance between the particles. The thickness of the film is equal to the distance between the first surface and the second surface, thus permitting the thickness to be controlled by varying the distance between the control surfaces. The robustness of the sensor probe is enhanced by placing a porous or mesh electrode along with, or in place of, a chemical binding agent between the film and the terminals. The robustness is also improved by placing a diode in series with the sensor circuit.