US3248540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for radioactive tracer logging
Assignee: Dresser Industries Inc
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Filing: 1962-03-29
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Granted: 1966-04-26
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Expires: 1982-03-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Youmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:02
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
APPARATUS FOR DETERMINING THE VELOCITY OF FLOW OF A CONDUCTIVE FLUID STREAM COMPRISING: A BODY OF IONIZABLE RADIOACTIVE MATERIAL SUPPORTED IN THE FLUID STREAM; MEANS FOR ELECTROCHEMICALLY IONIZING SAID MATERIAL TO DEPOSIT A PREDETERMINED QUANTITY OF RADIOACTIVE IONS IN SAID FLUID STREAM; AND MEANS POSITIONED IN SAID STREAM DOWNSTREAM OF SAID BODY A PREDETERMINED FIXED DISTANCE FOR DETECTING THE PRESENCE OF SAID RADIOACTIVE IONS IN SAID FLUID STREAM AND PRODUCING A SIGNAL INDICATIVE OF SAID DETECTION.
Claim 2
Dependent Claim
76 words
APPARATUS FOR DETERMINING THE VELOCITY OF FLOW OF A CONDUCTIVE FLUID STREAM COMPRISING: A BODY OF IONIZABLE RADIOACTIVE MATERIAL SUPPORTED IN THE FLUID STREAM; MEANS FOR ELECTROCHEMICALLY IONIZING SAID MATERIAL TO DEPOSIT A PREDETERMINED QUANTITY OF RADIOACTIVE IONS IN SAID FLUID STREAM; AND MEANS POSITIONED IN SAID STREAM DOWNSTREAM OF SAID BODY A PREDETERMINED FIXED DISTANCE FOR DETECTING THE PRESENCE OF SAID RADIOACTIVE IONS IN SAID FLUID STREAM AND PRODUCING A SIGNAL INDICATIVE OF SAID DETECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |