Patent US3766627A successfully refreshed from Google Patents.
Patent US3320568A successfully refreshed from Google Patents.
US3320568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitized notched transducers
Assignee: Raytheon Co
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Filing: 1964-08-10
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Granted: 1967-05-16
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Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Lewis K Russell
- 👤 Wilhelm H Legat
- 👤 Iii Roy C Hackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:26
CPC Classifications
H; H04; H04R; H04R23/00; H04R23/006; H10; H10D; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/115; Y10S148/159; Y10S148/169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A DEVICE COMPRISING (A) A BODY OF SEMICONDUCTOR MATERIAL HAVING A FIRST REGION OF SELECTED CONDUCTIVITY TYPE AND A SECOND REGION OF OPPOSITE CONDUCTIVITY TYPE, SAID FIRST AND SECOND REGIONS HAVING RESPECTIVE FIRST AND SECOND OPPOSITELY DISPOSED PLANAR SURFACES, AND A P-N JUNCTION THEREIN BETWEEN SAID REGIONS AND EXTENDING IN A PLANE PARALLEL WITH ONE OF SAID SURFACES, (B) A GROOVE EXTENDING TRANSVERSELY ACROSS SAID FIRST SURFACE INTO SAID FIRST REGION AND TERMINATING SHORT OF SAID JUNCTION, SAID SECOND REGION HAVING SENSITIVITY ENHANCING POINT DEFECTS IN THE ARREA OF SAID JUNCTION CLOSEST TO SAID GROOVE, (C) FIRST AND SECOND ELECTRODES ELECTRICALLY CONNECTED RESPECTIVELY TO SAID FIRST AND SECOND REGIONS FOR CONNECTION OF THE DEVICE INTO AN EXTERNAL CIRCUIT, (D) AND MOUNTING MEANS CONNECTED TO ONE END OF THE BODY FOR SUPPORTING THE BODY IN A CANTILEVERED POSITION FOR BENDING MOVEMENT ABOUT THE APEX OF THE GROOVE.
Claim 2
Independent Claim
146 words
A DEVICE COMPRISING (A) A BODY OF SEMICONDUCTOR MATERIAL HAVING A FIRST REGION OF SELECTED CONDUCTIVITY TYPE AND A SECOND REGION OF OPPOSITE CONDUCTIVITY TYPE, SAID FIRST AND SECOND REGIONS HAVING RESPECTIVE FIRST AND SECOND OPPOSITELY DISPOSED PLANAR SURFACES, AND A P-N JUNCTION THEREIN BETWEEN SAID REGIONS AND EXTENDING IN A PLANE PARALLEL WITH ONE OF SAID SURFACES, (B) A GROOVE EXTENDING TRANSVERSELY ACROSS SAID FIRST SURFACE INTO SAID FIRST REGION AND TERMINATING SHORT OF SAID JUNCTION, SAID SECOND REGION HAVING SENSITIVITY ENHANCING POINT DEFECTS IN THE ARREA OF SAID JUNCTION CLOSEST TO SAID GROOVE, (C) FIRST AND SECOND ELECTRODES ELECTRICALLY CONNECTED RESPECTIVELY TO SAID FIRST AND SECOND REGIONS FOR CONNECTION OF THE DEVICE INTO AN EXTERNAL CIRCUIT, (D) AND MOUNTING MEANS CONNECTED TO ONE END OF THE BODY FOR SUPPORTING THE BODY IN A CANTILEVERED POSITION FOR BENDING MOVEMENT ABOUT THE APEX OF THE GROOVE.
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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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |