Patent US3215943A successfully refreshed from Google Patents.
US3215943A
Expired / Lapsed
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Acoustical traveling wave parametric amplifier and generator using paramagnetic ionsto enhance acoustic dispersion
Assignee: International Business Machines Corp
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Filing: 1963-08-26
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Granted: 1965-11-02
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Norman S Shiren
- 👤 Thomas G Kazyaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:23
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A WAVE AMPLIFIER COMPRISING A FIRST TRANSDUCER CAPABLE OF CONVERTING ELECTROMAGNETIC ENERGY INTO ACOUSTICAL ENERGY, A SECOND TRANSDUCER ALSO CAPABLE OF CONVERTING ELECTROMAGNETIC ENERGY INTO ACOUSTICAL ENERGY, A MAGNESIUM OXIDE CRYSTAL INTERPOSED BETWEEN SAID TWO TRANSDUCERS SO THAT ALL THREE ELEMENTS FORM A CONTINUOUS MEDIUM FOR THE PASSAGE OF ACOUSTICAL ENERGY THERETHROUGH, MEANS FOR LAUNCHING AN ELECTROMAGNETIC WAVE TO SUPPLY PUMP FREQUENCY ENERGY TO SAID FIRST TRANSDUCER, MEANS FOR LAUNCHING AN ELECTROMAGNETIC WAVE TO SUPPLY SIGNAL FREQUENCY ENERGY TO SAID FIRST TRANSDUCER WHEREBY BOTH WAVES IMPINGE UPON SAID FIRST TRANSDUCER TO CREATE ACOUSTICAL WAVES THAT IMPINGE UPON SAID MAGNESIUM OXIDE CRYSTAL, AND MEANS FOR SENSING THE RESULTANT ACOUSTICAL WAVES EMANATING FROM SAID MAGNESIUM OXIDE CRYSTAL AND PASSING THROUGH SAID SECOND TRANSDUCER.
Claim 2
Dependent Claim
77 words
MEANS FOR GENERATING TWO SEPARATE ULTRASONIC WAVES COMPRISING A PIEZOELECTRIC TUBE AND A MAGNESIUM OXIDE CRYSTAL CEMENTED AT ONE END OF SAID TUBE TO FORM A JUNCTION, MEANS FOR APPLYING MICROWAVE ELECTRICAL ENERGY AT SAID JUNCTION SO AS TO CREATE A FIRST TRAIN OF ACOUSTICAL WAVES IN SAID PIEZOELECTRIC CRYSTAL, MEANS FOR APPLYING MICROWAVE ELECTRICAL ENERGY AT THE FREE END OF SAID TUBE SO AS TO CREATE A SECOND TRAIN OF ACOUSTICAL WAVES IN SAID PIEZOELECTRIC TUBE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |