Patent US3881448A successfully refreshed from Google Patents.
Patent US3310049A successfully refreshed from Google Patents.
US3310049A
Expired / Lapsed
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Ultrasonic cardiac volume measurements
Assignee: Air Shields Inc
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Filing: 1963-09-17
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Granted: 1967-03-21
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Manfred E Clynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:27
CPC Classifications
A; A61; A61B; A61B8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF MEASURING THE INSTANTANEOUS VOLUME OF AN ORGANIC CHAMBER, COMPRISING THE STEPS OF IRRADIATING THE CHAMBER WITH PERIODIC PULSES OF ULTRASONIC ENERGY IN MULTIPLE DIRECTIONS ANGULARLY DISPLACED FROM EACH OTHER TO CAUSE SAID PULSES TO STRIKE THE WALLS OF SAID CHAMBER AT VARIOUS POINTS THEREON, DETECTING DURING THE INTERVAL BETWEEN SUCCESSIVE PULSES ULTRASONIC ENERGY REFLECTED FROM THE WALLS OF SAID CHAMBER, AND INTEGRATING SAID DETECTED ENERGY TO PRODUCE A VALVE WHICH IS A FUNCTION OF THE INSTANTANEOUS VOLUME OF SAID CHAMBER.
Claim 2
Independent Claim
83 words
THE METHOD OF MEASURING THE INSTANTANEOUS VOLUME OF AN ORGANIC CHAMBER, COMPRISING THE STEPS OF IRRADIATING THE CHAMBER WITH PERIODIC PULSES OF ULTRASONIC ENERGY IN MULTIPLE DIRECTIONS ANGULARLY DISPLACED FROM EACH OTHER TO CAUSE SAID PULSES TO STRIKE THE WALLS OF SAID CHAMBER AT VARIOUS POINTS THEREON, DETECTING DURING THE INTERVAL BETWEEN SUCCESSIVE PULSES ULTRASONIC ENERGY REFLECTED FROM THE WALLS OF SAID CHAMBER, AND INTEGRATING SAID DETECTED ENERGY TO PRODUCE A VALVE WHICH IS A FUNCTION OF THE INSTANTANEOUS VOLUME OF SAID CHAMBER.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |