US2674583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature coefficient resistors and methods of making them
Assignee: AT&T Inc
•
Filing: 1949-12-23
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Granted: 1954-04-06
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Expires: 1969-12-23
Abstract
No abstract record available.
Inventors
- 👤 Christensen Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:54
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/025; H; H01; H01B; H01B1/00; H01C; H01C7/00; H01C7/04; H01C7/042; H01C7/043; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN THE METHOD OF MAKING A CONDUCTING DEVICE OF METALLIC OXIDE MATERIAL, THE STEP IN PREPARING THE UNCURED MATERIAL WHICH COMPRISES MIXING METALLIC OXIDE PARTICLES OF THE ORDER OF 10-6 CENTIMETERS DIAMETER WITH ABOUT AN EQUAL QUANTITY BY WEIGHT OF METALLIC OXIDE PARTICLES OF THE ORDER OF 10-4 CENTIMETERS DIAMETER AND A BINDER COMPRISING A CARBON-TO-CARBON VALENCE BOND POLYMER WHICH IS SOLUBLE IN AN ORGANIC SOLVENT, IS NON-HALOGENATED AND HAS A POLYMER CHAIN LENGTH OF AT LEAST 500 ANGSTROM UNITS.
Claim 2
Dependent Claim
80 words
IN THE METHOD OF MAKING A CONDUCTING DEVICE OF METALLIC OXIDE MATERIAL, THE STEP IN PREPARING THE UNCURED MATERIAL WHICH COMPRISES MIXING METALLIC OXIDE PARTICLES OF THE ORDER OF 10-6 CENTIMETERS DIAMETER WITH ABOUT AN EQUAL QUANTITY BY WEIGHT OF METALLIC OXIDE PARTICLES OF THE ORDER OF 10-4 CENTIMETERS DIAMETER AND A BINDER COMPRISING A CARBON-TO-CARBON VALENCE BOND POLYMER WHICH IS SOLUBLE IN AN ORGANIC SOLVENT, IS NON-HALOGENATED AND HAS A POLYMER CHAIN LENGTH OF AT LEAST 500 ANGSTROM UNITS.
References Cited (Backward Citations)
US2361527A
Cited
US2364790A
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US2358211A
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US2414793A
Cited
GB618966A
Cited
US2593507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |