US2846560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater wire
Assignee: General Electric Co
•
Filing: 1957-05-31
•
Granted: 1958-08-05
•
Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Jacoby
- 👤 Frank E Becker
- 👤 Rosenberg Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN ELECTRIC HEATER WIRE COMPRISING A PAIR OF SPACED METALLIC CONDUCTORS, AND A COMPOSITION INSULATING AT ROOM TEMPERATURE BETWEEN SAID CONDUCTORS, SAID COMPOSITION HAVING A HIGH NEGATIVE COEFFICIENT OF THERMAL IMPEDANCE AND HAVING INCORPORATED THEREIN FROM 0.04% TO 5% BY WEIGHT OF A SURFACE ACTIVE AGENT COMPATIBLE WITH SAID COMPOSITION, SAID SURFACE ACTIVE AGENT HAVING A CHANGE IN COEFFICIENT OF THERMAL IMPEDANCE PER 100* F. IN EXCESS OF 45% AND A DIRECT CURRENT RESISTANCE AT 80*F. NO GREATER THAN THREE TIMES THAT OF STEARYLDIMETHYLBENZYL AMMONIUM CHLORIDE.
Claim 2
Dependent Claim
86 words
AN ELECTRIC HEATER WIRE COMPRISING A PAIR OF SPACED METALLIC CONDUCTORS, AND A COMPOSITION INSULATING AT ROOM TEMPERATURE BETWEEN SAID CONDUCTORS, SAID COMPOSITION HAVING A HIGH NEGATIVE COEFFICIENT OF THERMAL IMPEDANCE AND HAVING INCORPORATED THEREIN FROM 0.04% TO 5% BY WEIGHT OF A SURFACE ACTIVE AGENT COMPATIBLE WITH SAID COMPOSITION, SAID SURFACE ACTIVE AGENT HAVING A CHANGE IN COEFFICIENT OF THERMAL IMPEDANCE PER 100* F. IN EXCESS OF 45% AND A DIRECT CURRENT RESISTANCE AT 80*F. NO GREATER THAN THREE TIMES THAT OF STEARYLDIMETHYLBENZYL AMMONIUM CHLORIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |