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US2883307A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrical resistance paint capable of forming a heating film

Assignee: Georgia Tech Research Institute
•
Filing: 1953-07-30
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Granted: 1959-04-21
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Expires: 1973-07-30
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Abstract

No abstract record available.

Inventors

  • 👤 Jr Clyde Orr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 11:07
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/18

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 101 words
A METHOD OF MAKING A RESISTANCE ELEMENT FOR HEATING PURPOSES, WHICH INCLUDES MIXING FROM APPROXIMATELY 30% TO APPROXIMATELY 80% BY WEIGHT A SILICATE WATER SOLUTION SELECTED FROM THE GROUP CONSISTING OF SODIUM SILICATE AND POTASSIUM SILICATE, FROM APPROXIMATELY 10% TO APPROXIMATELY 30% BY WEIGHT A FINELY DIVIDED CONDUCTING MATERIAL FROM APPROXIMATELY 5% TO APPROXIMATELY 10% BY WEIGHT COAL, FROM APPROXIMATELY 1% TO APPROXIMATELY 15% BY WEIGHT BENTONITE AND UP TO APPROXMATELY 50% BY WEIGHT WATER TO MAKE A FREE FLOWING RESISTANCE PAINT, COATING AN INSULATION CARRYING ELEMENT WITH A THIN FILM OF SAID RESISTANCE PAINT AND DRYING SAID FILM IN AIR.
Claim 2
Dependent Claim 30 words
A METHOD AS CLAIMED IN CLAIM 8 WHEREIN AN ELECTRICALLY INSULATING FILM IS COATED OVER SAID FILM OF SAID RESISTANCE PAINT AFTER SAID FILM OF SAID RESISTANCE PAINT HAS DRIED.

References Cited (Backward Citations)

US617375A Cited
US798260A Cited
US1762990A Cited
US2047087A Cited
US2261260A Cited
US2330782A Cited
US2409893A Cited
US2479914A Cited
US2703356A Cited
US2683673A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1962-04-20 1962-10-20 1963-04-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1966-04-20 1966-10-20 1967-04-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1970-04-20 1970-10-20 1971-04-21 $7700.00 Window Closed / Lapsed

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