US2745932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistor
Assignee: American Electro Metal Corp
•
Filing: 1953-06-03
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Granted: 1956-05-15
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Expires: 1973-06-03
Abstract
No abstract record available.
Inventors
- 👤 Frank W Glaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/04; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/148; H05B2203/00; H05B2203/018
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN AN ELECTRIC HEATER DEVICE, A SOLID ELONGATED HEATER BODY OF SUBSTANTIAL THICKNESS ARRANGED TO BE TRAVERSED BY ELECTRIC HEATING CURRENT AND CONSISTING OF CARBONACEOUS MATERIAL, SAID BODY HAVING METAL ELECTRODES AT OPPOSITE END REGIONS, THE ENTIRE EXPOSED SURFACE OF SAID HEATER BODY BETWEEN SAID END REGIONS HAVING AS AN INTEGRAL PART THEREOF A DENSE CONTINUOUS ENCLOSURE LAYER OF A DOUBLE CARBIDE OF MOLYBDENUM AND SILICON HAVING A MELTING TEMPERATURE OF AT LEAST 1800* C.
Claim 2
Dependent Claim
75 words
IN AN ELECTRIC HEATER DEVICE, A SOLID ELONGATED HEATER BODY OF SUBSTANTIAL THICKNESS ARRANGED TO BE TRAVERSED BY ELECTRIC HEATING CURRENT AND CONSISTING OF CARBONACEOUS MATERIAL, SAID BODY HAVING METAL ELECTRODES AT OPPOSITE END REGIONS, THE ENTIRE EXPOSED SURFACE OF SAID HEATER BODY BETWEEN SAID END REGIONS HAVING AS AN INTEGRAL PART THEREOF A DENSE CONTINUOUS ENCLOSURE LAYER OF A DOUBLE CARBIDE OF MOLYBDENUM AND SILICON HAVING A MELTING TEMPERATURE OF AT LEAST 1800* C.
References Cited (Backward Citations)
US1134788A
Cited
US2597964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |