US3261082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of tailoring thin film impedance devices
Assignee: International Business Machines Corp
•
Filing: 1962-03-27
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Granted: 1966-07-19
•
Expires: 1982-03-27
Abstract
No abstract record available.
Inventors
- 👤 Leon I Maissel
- 👤 Donald R Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:59
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/22; H01C17/26; H01C17/265; H01C17/267; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF TAILORING THE RESISTANCE OF A THIN FILM IMPEDANCE DEVICE, COMPRISING: HEATING THE FILM OF THE IMPEDANCE DEVICE TO A TEMPERATURE ABOVE ITS NORMAL STABLIZING TEMPERATURE BY APPLING AT LEAST ONE DISCRETE ELECTRICAL IMPULSE TO THE FILM FOR A PREDETERMINED PERIOD OF TIME EQUAL TO OR LESS THAN ONE HUNDRED MILLISECONDS TO MODIFY ITS BULK RESISTIVITY FROM ITS INITIAL VALUE TO A PREDETERMINED DESIRED VALUE.
Claim 2
Independent Claim
67 words
A METHOD OF TAILORING THE RESISTANCE OF A THIN FILM IMPEDANCE DEVICE, COMPRISING: HEATING THE FILM OF THE IMPEDANCE DEVICE TO A TEMPERATURE ABOVE ITS NORMAL STABLIZING TEMPERATURE BY APPLING AT LEAST ONE DISCRETE ELECTRICAL IMPULSE TO THE FILM FOR A PREDETERMINED PERIOD OF TIME EQUAL TO OR LESS THAN ONE HUNDRED MILLISECONDS TO MODIFY ITS BULK RESISTIVITY FROM ITS INITIAL VALUE TO A PREDETERMINED DESIRED VALUE.
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |