US3220889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuit components
Assignee: Lanteris Space LLC
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Filing: 1962-08-02
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Granted: 1965-11-30
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Expires: 1982-08-02
Abstract
No abstract record available.
Inventors
- 👤 Mauro J Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:46
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/22; H01C17/26; H01C17/265; H01C17/267; H01C1/00; H01C1/16; H01C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN THE METHOD OF PRECISION ADJUSTING THE ELECTRICAL RESISTANCE OF A THIN FILM RESISTER OF TANTALUM, SUBJECTING SAID RESISTER TO CONTROLLED INTERNAL HEATING AND CONVECTIVE HEAT DISSIPATION, BY THE STEPS WHICH COMPRISES: ELECTRICALLY OVERLOADING THE RESISTER IN THE PRESENCE OF OXYGEN TO OXIDIZE SAID RESISTER; AND CONCURRENTLY MINIMIZING HEAT GRADIENTS IN THE RESISTER BY FLOWING OXYGEN-CONTAINING GASEOUS MEDIUM OVER THE RESISTOR.
Claim 2
Dependent Claim
61 words
IN THE METHOD OF PRECISION ADJUSTING THE ELECTRICAL RESISTANCE OF A THIN FILM RESISTER OF TANTALUM, SUBJECTING SAID RESISTER TO CONTROLLED INTERNAL HEATING AND CONVECTIVE HEAT DISSIPATION, BY THE STEPS WHICH COMPRISES: ELECTRICALLY OVERLOADING THE RESISTER IN THE PRESENCE OF OXYGEN TO OXIDIZE SAID RESISTER; AND CONCURRENTLY MINIMIZING HEAT GRADIENTS IN THE RESISTER BY FLOWING OXYGEN-CONTAINING GASEOUS MEDIUM OVER THE RESISTOR.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |