US3167451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of resistor production
Assignee: Sprague Electric Co
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Filing: 1959-08-26
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Granted: 1965-01-26
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Expires: 1979-08-26
Abstract
No abstract record available.
Inventors
- 👤 Tierman Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:33
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/08; H01C7/00; H01C7/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR MAKING A METAL FILM RESISTOR WHICH COMPRISES THE STEPS OF DEPOSITING METALS ON A FILAMENT, POSITIONING SAID FILAMENT AND AN INERT NON-CONDUCTIVE BASE IN A VACUUM SYSTEM, AND EVAPORATING THE ENTIRE METAL DEPOSITS FROM SAID FILAMENT TO EXHAUSTION, SO THAT A KNOWN QUANTITY AND QUALITY OF SAID METAL DEPOSITS IS VAPOR DEPOSITED ON SAID BASE.
Claim 2
Dependent Claim
58 words
A PROCESS FOR MAKING A METAL FILM RESISTOR WHICH COMPRISES THE STEPS OF DEPOSITING METALS ON A FILAMENT, POSITIONING SAID FILAMENT AND AN INERT NON-CONDUCTIVE BASE IN A VACUUM SYSTEM, AND EVAPORATING THE ENTIRE METAL DEPOSITS FROM SAID FILAMENT TO EXHAUSTION, SO THAT A KNOWN QUANTITY AND QUALITY OF SAID METAL DEPOSITS IS VAPOR DEPOSITED ON SAID BASE.
References Cited (Backward Citations)
GB360826A
Cited
US2153786A
Cited
DE702937C
Cited
US2962393A
Cited
US3018193A
Cited
US2969296A
Cited
US3018198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |