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:
Oct. 09, 1979
Filed:
May. 02, 1978
Edmund E Buzza, Fullerton, CA (US);
John E Lillig, Diamond Bar, CA (US);
Beckman Instruments, Inc., Fullerton, CA (US);
Abstract
A method of checking the electrical isolation provided by a gas permeable membrane for a carbon dioxide sensor in an analyzer for simultaneously measuring the carbon dioxide and chloride content of a blood sample as it reacts with a reagent in a sample cell. The method involves actuating the carbon dioxide sensor during its normal 'off-time' and measuring any signal generated thereby while a coulometric generator in the analyzer is initially activated to titrate to a repeatable initial value any chloride present in the reagent alone. Any signal generated by the sensor above a predetermined value is indicative of a defective membrane and may be utilized to inhibit further operation of the analyzer.