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US3591480A Expired / Lapsed US ⏱️ 0.0 years remaining

Glucose measuring system

Assignee: International Business Machines Corp
•
Filing: 1968-07-15
•
Granted: 1971-07-06
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Expires: 1988-07-15
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Abstract

Abstract THEN A PLATINUM AND CALOMEL ELECTRODE, COUPLED VIA AN ELECTROLYTE SOLUTION, ACT TO CAUSE GALVANIC COULOMETRIC REDUCTION OF THE IODINE TO REGENERATE IODIDE. AT STEADY STATE THE ONLY CURRENT-REGULATING MECHANISM IS THE DIFFUSION OF GLUCOSE ACROSS THE MEMBRANE, WHICH IS A LINEAR FUNCTION OF CONCENTRATION. A MEASURING SYSTEM IS PROVIDED WHICH DIRECTLY MEASURES THE CONCENTRATION OF GLUCOSE IN BIOLOGICAL FLUIDS. GLUCOSE FROM A BIOLOGICAL FLUID IS DIFFUSED THROUGH A SEMIPERMEABLE MEMBRANE INTO A REACTION CHAMBER AND IS CATALYZED BY THE ENZYME GLUCOSE OXIDASE WHEREUPON GLUCONIC ACID AND HYDROGEN PEROXIDE ARE FORMED. IODIDE IONS IN THE REACTION CHAMBER THEN EFFECT THE DECOMPOSITION OF THE HYDROGEN PEROXIDE TO FORM IODINE AND WATER.

Inventors

  • 👤 Gordon W Neff
  • 👤 Carlos J Sambucetti
  • 👤 John E Iomko

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 01:47
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/001; C12Q1/005; C12Q1/006; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/327; G01N27/3271; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222; Y10T436/143333; Y10T436/144444; Y10T436/25; Y10T436/25375; Y10T436/255

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-07-05 1975-01-04 1975-07-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-07-05 1979-01-04 1979-07-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-07-05 1983-01-04 1983-07-06 $7700.00 Window Closed / Lapsed

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