US3365590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric transducer
Assignee: HP Inc
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Filing: —
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Granted: 1968-01-23
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Expires: 1985-01-23
Abstract
No abstract record available.
Inventors
- 👤 Donn D Lobdell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/002; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN ULTRASONIC ATTENUATOR COMPRISING: A PLURALITY OF PIEZOELECTRIC CRYSTALS EACH HAVING A PAIR OF OPPOSITELY FACING SURFACES; A PLURALITY OF ELECTRODES; SAID PIEZOELECTRIC CRYSTALS AND SAID ELECTRODES BEING SERIALLY JOINED TOGETHER WITH EACH OF SAID OPPOSITELY FACING SURFACES OF EACH OF SAID PIEZOELECTRIC CRYSTALS ABUTTING CONTINUOUSLY UPON ONE OF SAID ELECTRODES; AND AN ELECTRICAL ENERGY DISSIPATING ELEMENT CONNECTED BETWEEN EACH ADJACENT PAIR OF SAID ELECTRODES.
Claim 2
Dependent Claim
65 words
AN ULTRASONIC ATTENUATOR COMPRISING: A PLURALITY OF PIEZOELECTRIC CRYSTALS EACH HAVING A PAIR OF OPPOSITELY FACING SURFACES; A PLURALITY OF ELECTRODES; SAID PIEZOELECTRIC CRYSTALS AND SAID ELECTRODES BEING SERIALLY JOINED TOGETHER WITH EACH OF SAID OPPOSITELY FACING SURFACES OF EACH OF SAID PIEZOELECTRIC CRYSTALS ABUTTING CONTINUOUSLY UPON ONE OF SAID ELECTRODES; AND AN ELECTRICAL ENERGY DISSIPATING ELEMENT CONNECTED BETWEEN EACH ADJACENT PAIR OF SAID ELECTRODES.
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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |