Patent US3156818A successfully refreshed from Google Patents.
US3156818A
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US
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Radioactive fluid flow measuring apparatus with means for injecting a marker material between the source and detector
Assignee: ExxonMobil Oil Corp
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Filing: 1960-07-25
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Granted: 1964-11-10
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Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Richard L Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:17
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/704; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
APPARATUS FOR DETERMINING THE RATE OF FLUID FLOW COMPRISING MEANS FORMING AN ELONGATED FLOW CHANNEL ADAPTED TO BE SUPPORTED FOR MOVEMENT THROUGH A FLUIDCARRYING CONDUIT AND ADAPTED TO DIRECT SAID FLUID THROUGH SAID FLOW CHANNEL, A FIRST ELEMENT FOR TRANSMITTING RADIOACTIVE RADIATION THROUGH FLUID IN SAID FLOW CHANNEL, A SECOND ELEMENT SPACED APART FROM SAID FIRST ELEMENT ALONG THE LENGTH OF SAID FLOW CHANNEL AND RESPONSIVE TO RADIOACTIVE RADIATION TRANSMITTED THROUGH SAID FLUID FOR GENERATING AN OUTPUT SIGNAL, MEANS FOR INJECTING MATERIAL INTO SAID FLUID UPSTREAM OF SAID SECOND ELEMENT TO PRODUCE A
Claim 2
Dependent Claim
93 words
APPARATUS FOR DETERMINING THE RATE OF FLUID FLOW COMPRISING MEANS FORMING AN ELONGATED FLOW CHANNEL ADAPTED TO BE SUPPORTED FOR MOVEMENT THROUGH A FLUIDCARRYING CONDUIT AND ADAPTED TO DIRECT SAID FLUID THROUGH SAID FLOW CHANNEL, A FIRST ELEMENT FOR TRANSMITTING RADIOACTIVE RADIATION THROUGH FLUID IN SAID FLOW CHANNEL, A SECOND ELEMENT SPACED APART FROM SAID FIRST ELEMENT ALONG THE LENGTH OF SAID FLOW CHANNEL AND RESPONSIVE TO RADIOACTIVE RADIATION TRANSMITTED THROUGH SAID FLUID FOR GENERATING AN OUTPUT SIGNAL, MEANS FOR INJECTING MATERIAL INTO SAID FLUID UPSTREAM OF SAID SECOND ELEMENT TO PRODUCE A
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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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |