Patent US3587561A successfully refreshed from Google Patents.
US3587561A
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Ultrasonic transducer assembly for biological monitoring
Assignee: F Hoffmann La Roche AG
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Filing: 1969-06-05
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Granted: 1971-06-28
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Expires: 1989-06-05
Abstract
Abstract AN ULTRASONIC TRANSDUCER ASSEMBLY FOR USE WITH A HUMAN OR AN ANIMAL BODY, COMPRISING A FLEXIBLE PRINTED CIRCUIT MEANS HAVING A PRESET CURVATURE, FOR SUPPORTING AN ARRAY OF ULTRASONIC TRANSDUCER UNITS ELECTRICALLY CONNECTED TO THE PRINTED CIRCUIT FOR IRRADIATING A SELECTED SECTION OF A BODY WITH ULTRASONIC ENGERGY AND FOCUSING THE RELATED TRANSMITTED ULTRASONIC ENERGY. THE TRANSDUCER ASSEMBLY IS USABLE FOR BLOOD PRESSURE MONITORING BY PLACEMENT WITH AN INFLATABLE CUFF ABOUT A BODY LIMB FOR DETECTION OF ARTERIAL WALL MOTION INDUCED BY CUFF PRESSURE VARIATIONS.
Inventors
- 👤 Janis Gunars Ziedonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:22
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/04; A61B8/42; A61B8/4209; A61B8/4227; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |