US2785374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for analyzing the composition of fluid mixtures
Assignee: Shell Development Co
•
Filing: 1953-06-16
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Granted: 1957-03-12
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Expires: 1973-06-16
Abstract
No abstract record available.
Inventors
- 👤 Charles H Fay
- 👤 Ronald P Gilmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:34
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A SYSTEM FOR DETERMINING THE COMPOSITION OF FLUIDS IN A BOREHOLE, A HOUSING ADAPTED TO BE LOWERED INTO SAID BOREHOLE ON A CONDUCTOR CABLE, A CAPACITOR HAVING PLATES MOUNTED IN SAID HOUSING IN CONTACT WITH SAID FLUID, SAID FLUID FORMING THE DIELECTRIC BETWEEN SAID PLATES, AT LEAST ONE OF THE PLATES BEING COVERED WITH AN INSULATOR MATERIAL COMPLETELY PROTECTING SAID PLATE FROM CONTACT WITH THE FLUID, A FIXED FREQUENCY OSCILLATOR AND A VARIABLE FREQUENCY OSCILLATOR CARRIED IN SAID HOUSING, SAID CAPACITOR BEING CONNECTED TO SAID VARIABLE FREQUENCY OSCILLATOR TO CONTROL THE FREQUENCY THEREOF, A MODULATOR CIRCUIT HAVING ITS INPUT CONNECTED TO THE OUTPUTS OF THE TWO OSCILLATORS TO OBTAIN A BEAT SIGNAL THEREFROM, AND FREQUENCY
Claim 2
Dependent Claim
116 words
IN A SYSTEM FOR DETERMINING THE COMPOSITION OF FLUIDS IN A BOREHOLE, A HOUSING ADAPTED TO BE LOWERED INTO SAID BOREHOLE ON A CONDUCTOR CABLE, A CAPACITOR HAVING PLATES MOUNTED IN SAID HOUSING IN CONTACT WITH SAID FLUID, SAID FLUID FORMING THE DIELECTRIC BETWEEN SAID PLATES, AT LEAST ONE OF THE PLATES BEING COVERED WITH AN INSULATOR MATERIAL COMPLETELY PROTECTING SAID PLATE FROM CONTACT WITH THE FLUID, A FIXED FREQUENCY OSCILLATOR AND A VARIABLE FREQUENCY OSCILLATOR CARRIED IN SAID HOUSING, SAID CAPACITOR BEING CONNECTED TO SAID VARIABLE FREQUENCY OSCILLATOR TO CONTROL THE FREQUENCY THEREOF, A MODULATOR CIRCUIT HAVING ITS INPUT CONNECTED TO THE OUTPUTS OF THE TWO OSCILLATORS TO OBTAIN A BEAT SIGNAL THEREFROM, AND FREQUENCY
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |