Patent US2711646A successfully refreshed from Google Patents.
US2711646A
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Acoustic impedance measuring device for liquids
Assignee: Individual
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Filing: 1950-04-25
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Granted: 1955-06-28
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Expires: 1970-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jean S Mendousse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/02; G01N29/036; G01N2291/00; G01N2291/02; G01N2291/025; G01N2291/0256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF DETERMINING THE CHARACTERISTIC ACOUSTIC IMPEDANCE OF A LIQUID MEDIUM COMPRISING COVERING A CRYSTAL TRANSDUCER WITH A THIN LAYER OF THE LIQUID, ELECTRICALLY ENERGIZING THE CRYSTAL TO TRANSMIT VIBRATIONS INTO THE LIQUID, THE FREQUENCY OF THE CRYSTAL ENERGIZING CURRENT BEING SO HIGH THAT THE EFFECT OF REFLECTED WAVES ON THE CONDUCTANCE OF THE TRANSDUCER IS NEGLIGIBLE, AND DETERMINING THE CONDUCTANCE OF SAID TRANSDUCER AS SO LOADED.
Claim 2
Independent Claim
68 words
THE METHOD OF DETERMINING THE CHARACTERISTIC ACOUSTIC IMPEDANCE OF A LIQUID MEDIUM COMPRISING COVERING A CRYSTAL TRANSDUCER WITH A THIN LAYER OF THE LIQUID, ELECTRICALLY ENERGIZING THE CRYSTAL TO TRANSMIT VIBRATIONS INTO THE LIQUID, THE FREQUENCY OF THE CRYSTAL ENERGIZING CURRENT BEING SO HIGH THAT THE EFFECT OF REFLECTED WAVES ON THE CONDUCTANCE OF THE TRANSDUCER IS NEGLIGIBLE, AND DETERMINING THE CONDUCTANCE OF SAID TRANSDUCER AS SO LOADED.
References Cited (Backward Citations)
US2031951A
Cited
US2427348A
Cited
US2394461A
Cited
US2592134A
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US2479264A
Cited
US2607216A
Cited
US2626992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |