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:
Aug. 09, 1994
Filed:
Dec. 26, 1991
Matthew J Leader, Laguna Niguel, CA (US);
Kee Van Sin, White Bear Lake, MN (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
The sensor apparatus of the present invention includes on a nonconducting substrate electrically conductive pathways leading to at least two analyte electrodes and one reference electrode. The analyte electrodes each have sensitivities for both analytes but each has a membrane and/or electrolyte that favors the conversion of ionic potential to electronic potential for a different analyte. The apparatus has an fluid circuit means for liquid contact between the electrodes so that electric signals can be sent by electric circuitry to an analyzing means. The analyzing means determines the values of the analytes from the following simultaneous relationships: ##EQU1## where: delta mV=change in millivolts