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US3820239A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of manufacturing thermistor

Assignee: Individual
•
Filing: 1973-07-03
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Granted: 1974-06-28
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Expires: 1993-07-03
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Abstract

Abstract THE DISCLOSURE IS DIRECTED TO THERMISTORS FOR TEMPERATURE MEASUREMENT AND METHOD OF MAKING THE SAME, WHEREIN THE YIELD IN THE MANUFACTURE IS VERY HIGH AND THE CHOICE OF THE PRODUCTS CAN BE MADE IN THE MIDWAY OF THE MANUFACTURE SO THAT SMALL-SIZED THERMISTORS HAVING LITTLE CHANGE IN THE RESISTANCE FOR THE LONG USE CAN BE OBTAINED INEXPENSIBLY, SAID THERMISTORS BEING USABLE AT A HIGH TEMPERATURE. THE METHOD INCLUDES THE STEPS OF FORMING A DISC-SHAPED THERMISTOR BODY, COATING A HEAT RESISTING CONDUCTIVE MATERIAL ON BOTH SIDES OF THE BODY TO PROVIDE ELECTRODES, CONNECTING METALLIC LEADS TO THE ELECTRODES, DISPOSING THE RESULTANT BODY IN A GLASS MEMBER, AND HEATING THE GLASS MEMBER TO EMBED THE RESULTANT BODY IN THE GLASS WHILE SIMULTANEOUSLY FIRING THE HEAT RESISTING CONDUCTIVE MATERIAL.

Inventors

  • 👤 Y Nagata

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 09:09
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/28; H01C1/00; H01C1/14; H01C1/1413; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/49087; Y10T29/49098

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) 1977-06-27 1977-12-27 1978-06-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-27 1981-12-27 1982-06-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-27 1985-12-27 1986-06-28 $7700.00 Window Closed / Lapsed

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