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US3709812A Expired / Lapsed US ⏱️ 0.0 years remaining

Carbon dioxide sensor

Assignee: DS MEDICAL PRODUCTS Co A CORP
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Filing: 1970-10-16
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Granted: 1973-01-09
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Expires: 1990-10-16
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Abstract

Abstract A CARBON DIOXIDE SENSOR HAS AN ELONGATED FLEXIBLE CURRENT COLLECTOR, AN ELECTROCHEMICALLY ACTIVE REGION OF HYDRIDED PALLADIUM WITH A SURFACE COATING OF PLATINUM BLACK IN ELECTRICAL CONTACT WITH A PORTION OF THE CURRENT COLLECTOR, A SECOND ELONGATED FLEXIBLE CURRENT COLLECTOR SURROUNDING THE FIRST CURRENT COLLECTOR, A SECOND ELECTROCHEMICALLY ACTIVE REGION OF SILVER AND SILVER HALIDE IN ELECTRICAL CONTACT WITH THE SECOND CURRENT COLLECTOR, A FIRST LAYER OF ELECTRICAL INSULATION DISPOSED BETWEEN THE FIRST AND SECOND CURRENT COLLECTORS, A SECOND LAYER OF ELECTRICAL INSULATION DISPOSED OVER THE SECOND CURRENT COLLECTOR, AN ANION EXCHANGE RESIN ELECTROLYTE CONTACTING BOTH ELECTROCHEMICALLY ACTIVE REGIONS, AND AN OUTER SHEATH OF CARBON DIOXIDE DIFFUSION BARRIER MATERIAL ENCAPSULATING AT LEAST THE ELECTROCHEMICALLY ACTIVE REGIONS AND THE ELECTROLYTE.

Inventors

  • 👤 L Niedrach
  • 👤 J Bergeron

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 07:48
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0027; G01N33/0036; G01N33/004

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) 1976-01-09 1976-07-10 1977-01-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-01-09 1980-07-10 1981-01-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-01-09 1984-07-10 1985-01-09 $7700.00 Window Closed / Lapsed

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