US3339085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-layer pressure sensitive barrier type transducer device
Assignee: Raytheon Co
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Filing: 1964-04-08
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Granted: 1967-08-29
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Expires: 1984-04-08
Abstract
No abstract record available.
Inventors
- 👤 Anthony P Schmid
- 👤 Roger F Nelson
- 👤 Rindner Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:59
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/50; G; G01; G01L; G01L1/00; G01L1/18; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A STRAIN-SENSITIVE TRANSDUCER DEVICE COMPRISING A SEMICONDUCTOR BODY HAVING FOUR LAYERS, THE FIRST AND THIRD LAYERS BEING OF ONE CONDUCTIVITY TYPE, AND THE SECOND AND FOURTH LAYERS BEING OF OPPOSITE CONDUCTIVITY TYPE, ONE OF SAID LAYERS HAVING A PLANE SURFACE, BARRIER JUNCTIONS BETWEEN SAID LAYERS, ONE OF SAID JUNCTIONS EXTENDING IN A PLANE PARALLEL WITH SAID PLANE SURFACE AND DISPOSED CLOSER TO SAID SURFACE THAN THE OTHER JUNCTIONS, FORCEINDUCING MEANS FOR APPLYING COMPRESSION STRESS TO A POINT ON SAID SURFACE FOR INTRODUCING STRAIN IN A SMALL REGION OF THE UNDERLYING PARALLEL JUNCTION AND CIRCUIT MEANS FOR FORWARD BIASING SAID PARALLEL JUNCTION.
Claim 2
Dependent Claim
101 words
A STRAIN-SENSITIVE TRANSDUCER DEVICE COMPRISING A SEMICONDUCTOR BODY HAVING FOUR LAYERS, THE FIRST AND THIRD LAYERS BEING OF ONE CONDUCTIVITY TYPE, AND THE SECOND AND FOURTH LAYERS BEING OF OPPOSITE CONDUCTIVITY TYPE, ONE OF SAID LAYERS HAVING A PLANE SURFACE, BARRIER JUNCTIONS BETWEEN SAID LAYERS, ONE OF SAID JUNCTIONS EXTENDING IN A PLANE PARALLEL WITH SAID PLANE SURFACE AND DISPOSED CLOSER TO SAID SURFACE THAN THE OTHER JUNCTIONS, FORCEINDUCING MEANS FOR APPLYING COMPRESSION STRESS TO A POINT ON SAID SURFACE FOR INTRODUCING STRAIN IN A SMALL REGION OF THE UNDERLYING PARALLEL JUNCTION AND CIRCUIT MEANS FOR FORWARD BIASING SAID PARALLEL JUNCTION.
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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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |