Patent US3505651A successfully refreshed from Google Patents.
US3296574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film resistors with multilayer terminals
Assignee: Individual
•
Filing: 1962-12-21
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Granted: 1967-01-03
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Tassara Luigi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/006; H01C1/00; H01C1/14; H01C1/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A RESISTOR COMPRISING: A RIGID INSULATING SUBSTRATE; A FIRST LAYER OF NICKEL-CHROMIUM ALLOY RESISTIVE MATERIAL THEREON; AT LEAST TWO CONDUCTIVE TERMINALS CONTACTING DIFFERENT PARTS OF THE SURFACE OF SAID RESISTIVE MATERIAL AND EACH COMPRISING A SECOND LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, COPPER-MANGANESE, AND SILVER, SAID SECOND LAYER COVERING AND ADHERING TO ONE OF SAID PARTS OF THE SURFACE OF SAID RESISTIVE MATERIAL, A LAYER OF METAL WHICH IS RELATIVELY HIGHLY CONDUCTIVE COMPARED TO SAID RESISTIVE MATERIAL, AND A BRIDGING LAYER OF METAL BETWEEN SAID CONDUCTIVE METAL LAYER AND SAID SECOND LAYER AND IN SURFACE-TO-SURFACE CONTACT WITH BOTH SAID CONDUCTIVE METAL LAYER AND SAID SECOND LAYER AND CAPABLE OF ALLOYING WITH SAID SECOND LAYER; AND AN IMPERVIOUS LAYER OF INSULATING MATERIAL COVERING SAID RESISTIVE MATERIAL BETWEEN SAID TERMINALS.
Claim 2
Dependent Claim
132 words
A RESISTOR COMPRISING: A RIGID INSULATING SUBSTRATE; A FIRST LAYER OF NICKEL-CHROMIUM ALLOY RESISTIVE MATERIAL THEREON; AT LEAST TWO CONDUCTIVE TERMINALS CONTACTING DIFFERENT PARTS OF THE SURFACE OF SAID RESISTIVE MATERIAL AND EACH COMPRISING A SECOND LAYER OF METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, COPPER-MANGANESE, AND SILVER, SAID SECOND LAYER COVERING AND ADHERING TO ONE OF SAID PARTS OF THE SURFACE OF SAID RESISTIVE MATERIAL, A LAYER OF METAL WHICH IS RELATIVELY HIGHLY CONDUCTIVE COMPARED TO SAID RESISTIVE MATERIAL, AND A BRIDGING LAYER OF METAL BETWEEN SAID CONDUCTIVE METAL LAYER AND SAID SECOND LAYER AND IN SURFACE-TO-SURFACE CONTACT WITH BOTH SAID CONDUCTIVE METAL LAYER AND SAID SECOND LAYER AND CAPABLE OF ALLOYING WITH SAID SECOND LAYER; AND AN IMPERVIOUS LAYER OF INSULATING MATERIAL COVERING SAID RESISTIVE MATERIAL BETWEEN SAID TERMINALS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |