US3634334A
Expired / Lapsed
US
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Electrical resistance material and method of making the same
Assignee: Gulf & Western Ind Prod Co
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Filing: 1968-10-18
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Granted: 1972-01-11
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Expires: 1988-10-18
Abstract
Abstract AN ELECTRICAL RESISTANCE MATERIAL AND METHOD OF MAKING THE SAME WHEREIN THE MATERIAL COMPRISES A DISPERSION OF LARGE METAL PARTICLES AND SMALL METAL PARTICLES DISPERSED IN A FUSED, GLASSY MATRIX, THE SUM OF METAL PARTICLES CONSTITUTING ABOUT 25-80% OF THE MATERIAL AND THE RATIO OF LARGE TO SMALL METAL PARTICLES BEING WITHIN THE RANGE OF ABOUT 2:1 TO 10:1.
Inventors
- 👤 Lester Earl Burgess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:11
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06526
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |