Patent US3121337A successfully refreshed from Google Patents.
US3121337A
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Piezoresistive transducer employing oxygen-deficient rutile as the piezoresistive material
Assignee: Lockheed Martin Corp
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Filing: 1959-11-24
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Granted: 1964-02-18
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Expires: 1979-11-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Lewis E Hollander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/12; G01P15/123
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
A PIEZORESISTIVE ACCELEROMETER COMPRISING A PIECE OF SEMICONDUCTOR MAATERIAL OF OXYGEN-DEFICIENT RUTILE, SAID PIECE OF MATERIAL HAVING A LONGITUDINAL AXIS, MEANS ATTACHED TO SAID PIECE OF MATERIAL FOR PASSING A CURRENT THROUGH OPPOSITE PORTIONS THEREOF, SAID PIECE OF MATERIAL BEING CONSTRUCTED AND ARRANGED SO THAT THE "A" CRYSTAL AXIS OF SAID PIECE OF MATERIAL, THE FLOW OF CURRENT THERETHROUGH, AND THE STRESS APPLIED THERETO ARE ALL IN A DIRECTION PARALLEL TO SAID LONGITUDINAL AXIS, MEANS SUPPORTING SAID PIECE OF MATERIAL, AND A LOAD MASS ADAPTED TO CHANGE THE STRESS ON SAID PIECE OF SEMICONDUCTOR MATERIAL IN RESPONSE TO ACCELERATION APPLIED TO SAID ACCELEROMETER.
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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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |