Patent US5802285A successfully refreshed from Google Patents.
Patent US2846559A successfully refreshed from Google Patents.
US2846559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosensitive organic material
Assignee: General Electric Co
•
Filing: 1957-05-31
•
Granted: 1958-08-05
•
Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Rosenberg Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:35
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; H01C7/049; H01B; H01B3/00; H01B3/18; H01B3/28; H01B3/30; H01B3/44; H01B3/447; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
AN ELECTRIC HEATER WIRE COMPRISING A PAIR OF SPACED METALLIC CONDUCTORS, AND A COMPOSITION HAVING A HIGH NEGATIVE COEFFICIENT OF THERMAL IMPEDANCE BETWEEN SAID CONDUCTORS, SAID COMPOSITION CONSISTING ESSENTIALLY OF A SOLID COPOLYMER OF 30% TO 85% BY WEIGHT OF ACRYLONITRILE, 15% TO 70% BY WEIGHT OF AN ACRYLIC ACID ESTER, AND UP TO 5% BY WEIGHT OF A SURFACE ACTIVE AGENT.
Claim 2
Dependent Claim
62 words
AN ELECTRIC HEATER WIRE COMPRISING A PAIR OF SPACED METALLIC CONDUCTORS, AND A COMPOSITION HAVING A HIGH NEGATIVE COEFFICIENT OF THERMAL IMPEDANCE BETWEEN SAID CONDUCTORS, SAID COMPOSITION CONSISTING ESSENTIALLY OF A SOLID COPOLYMER OF 30% TO 85% BY WEIGHT OF ACRYLONITRILE, 15% TO 70% BY WEIGHT OF AN ACRYLIC ACID ESTER, AND UP TO 5% BY WEIGHT OF A SURFACE ACTIVE AGENT.
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 |