US3079584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure piezoelectric hydrophone with tungsten backing plate
Assignee: Individual
•
Filing: 1959-10-23
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Granted: 1963-02-26
•
Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Claude C Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:55
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0662; B06B1/0677
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A TRANSDUCER FOR CONVERTING SOUND ENERGY OVER A SELECTED FREQUENCY BAND IN A FLUID MEDIUM TO ELECTRICAL ENERGY COMPRISING A PIEZOELECTRIC CRYSTAL IMMERSED IN SAID FLUID MEDIUM, SAID CRYSTAL HAVING FIRST AND SECOND OPPOSED SOUND RADIATING FACES, AND A TUNGSTEN BACKING PLATE CEMENTED TO THE SECOND OF SAID FACES, SAID CRYSTAL HAVING A
Claim 2
Dependent Claim
53 words
A TRANSDUCER FOR CONVERTING SOUND ENERGY OVER A SELECTED FREQUENCY BAND IN A FLUID MEDIUM TO ELECTRICAL ENERGY COMPRISING A PIEZOELECTRIC CRYSTAL IMMERSED IN SAID FLUID MEDIUM, SAID CRYSTAL HAVING FIRST AND SECOND OPPOSED SOUND RADIATING FACES, AND A TUNGSTEN BACKING PLATE CEMENTED TO THE SECOND OF SAID FACES, SAID CRYSTAL HAVING A
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |