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US3572995A Expired / Lapsed US ⏱️ 0.0 years remaining

Blood-oxygen measurement and meter

Assignee: Royal Medical Corp
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Filing: 1968-06-05
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Granted: 1971-03-30
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Expires: 1988-06-05
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Abstract

Abstract APPARATUS AND METHOD FOR ELECTRICALLY AND QUICKLY MEASURING AND INDICATING THE AMOUNT OF OXYGEN IN BLOOD. THROUGH THIS PROCESS THE IONIZED OXYGEN IS CONVERTED TO OXYGEN ATOMS IN A BLOOD-SAMPLE SOLUTION. THE TOTAL VALUE OF THE GRADUALLY REDUCING FLOW OF THESE IONS IS DETERMINED IN A CIRCUIT BY CURRENT DIVISION, AMPLIFICATION, AND SUMMATION IN A CAPACITOR. THE FINAL RESULT IS QUICKLY SEEN ON AN INDICATOR, CALIBRATED TO READ IN VOLUME UNITS OF OXYGEN IN A PREDETERMINED AMOUNT OF TESTED BLOOD. ECONOMICALLY DISPOSABLE, QUICKLY REPLACEABLE ELECTRODES ARE POSITIONED IN THE IONIZED SOLUTION. TO PREVENT ADHERENCE OF EFFICIENCYDESTROYING, BLOOD PARTICLES ON THEM THEY ARE VIBRATED BY AN ULTRASONIC GENERATOR.

Inventors

  • 👤 Billy Otis Martin
  • 👤 Robert Cherry Martin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 07:09
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/42; G01N27/423; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4925; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497

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) 1974-03-29 1974-09-28 1975-03-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-29 1978-09-28 1979-03-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-29 1982-09-28 1983-03-30 $7700.00 Window Closed / Lapsed

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