Patent US3189767A successfully refreshed from Google Patents.
US3189767A
Expired / Lapsed
US
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Ultrasonic transmitting means and method of producing same
Assignee: General Electric Co
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Filing: 1963-01-28
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Granted: 1965-06-15
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Richard G Goldman
- 👤 William R Marklein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
FOR USE WITH A PIEZOELECTRIC ELEMENT HAVING TWO SPACED SURFACES, A TRANSMITTING MEANS COMPRISING A HOMOGENEOUS CERAMIC BLOCK, SAID BLOCK HAVING ONE END ENGAGING ONE OF SAID SURFACES, SAID BLOCK HAVING UNIFORMLY CHANGING DENSITY FROM SAID ONE END TO THE OTHER END OF SAID BLOCK SO THAT THE ACOUSTICAL IMPEDANCE OF SAID BLOCK VARIES UNIFORMLY WHEREBY SAID BLOCK IS RENDERED FREE FROM DISCONTINUITY OF ACOUSTICAL IMPEDANCE.
Claim 2
Dependent Claim
66 words
FOR USE WITH A PIEZOELECTRIC ELEMENT HAVING TWO SPACED SURFACES, A TRANSMITTING MEANS COMPRISING A HOMOGENEOUS CERAMIC BLOCK, SAID BLOCK HAVING ONE END ENGAGING ONE OF SAID SURFACES, SAID BLOCK HAVING UNIFORMLY CHANGING DENSITY FROM SAID ONE END TO THE OTHER END OF SAID BLOCK SO THAT THE ACOUSTICAL IMPEDANCE OF SAID BLOCK VARIES UNIFORMLY WHEREBY SAID BLOCK IS RENDERED FREE FROM DISCONTINUITY OF ACOUSTICAL IMPEDANCE.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |