US3200010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistance element
Assignee: Beckman Coulter Inc
•
Filing: 1961-12-11
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Granted: 1965-08-10
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Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Sr Thomas M Place
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:23
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C1/00; H01C1/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A RESISTANCE ELEMENT COMPRISING AN ELECTRICALLY NONCONDUCTIVE BASE HAVING: A CERMET RESISTANCE FILM FIRED THEREON AND HAVING A GAP THEREIN; AND A NONCONDUCTIVE FILM FIRED THEREON IN SAID GAP AND CONTACTING SAID RESISTANCE FILM AT OPPOSITE EDGES OF SAID GAP, SAID NONCONDUCTIVE FILM IN SAID GAP COMPRISING THE CERMET RESISTANCE MATERIAL OF SAID RESISTANCE FILM WITH UP TO A FEW PERCENT BY WEIGHT OF AND ADDITIVE SELECTED FROM THE GROUP CONSISTING OF TIN OXIDE, ZIRCONIUM SILICATE, MAGNESIUM OXIDE, ANTIMONY OXIDE OR GROUND FIRED STEATITE TO RENDER SAID CERMET MATERIAL NONCONDUCTIVE.
Claim 2
Dependent Claim
90 words
A RESISTANCE ELEMENT COMPRISING AN ELECTRICALLY NONCONDUCTIVE BASE HAVING: A CERMET RESISTANCE FILM FIRED THEREON AND HAVING A GAP THEREIN; AND A NONCONDUCTIVE FILM FIRED THEREON IN SAID GAP AND CONTACTING SAID RESISTANCE FILM AT OPPOSITE EDGES OF SAID GAP, SAID NONCONDUCTIVE FILM IN SAID GAP COMPRISING THE CERMET RESISTANCE MATERIAL OF SAID RESISTANCE FILM WITH UP TO A FEW PERCENT BY WEIGHT OF AND ADDITIVE SELECTED FROM THE GROUP CONSISTING OF TIN OXIDE, ZIRCONIUM SILICATE, MAGNESIUM OXIDE, ANTIMONY OXIDE OR GROUND FIRED STEATITE TO RENDER SAID CERMET MATERIAL NONCONDUCTIVE.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |