US3237765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper ore concentration by induced radioactivity
Assignee: Copper Range Co
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Filing: 1964-05-28
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Granted: 1966-03-01
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Antoine M Gaudin
- 👤 Harald F Ramdohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:54
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/346; G; G01; G01N; G01N23/00; G01N23/22; G01N23/221; G01N23/222; G01N2223/00; G01N2223/07; G01N2223/074; G01N2223/0745; G01N2223/60; G01N2223/616; Y; Y10; Y10S; Y10S209/00; Y10S209/908
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
A METHOD OF SORTING COPPER-BEARING ORE PIECES ACCORDING TO A PREDETERMNIED COPPER CONCENTRATION, SAID PIECES CONTAINING VARYING CONCENTRATIONS OF COPPER, WHICH COMPRISES IRRADIATING SAID ORE WITH NEUTRONS TO PRODUCE ORE PIECES CONTAINING CU 64 AND OTHER ISOTOPES WHICH ARE SHORT-LIVED, WAITING FOR A TIME SUFFICIENT TO PERMIT SELECTIVE DECAY OF SHORT-LIVED ISOTOPES, SEPARATELY DETECTING GAMMA RAYS TRAVELLING IN DIAMETRICALLY OPPOSITE DIRECTION FROM SAID CU 64 PIECE, MEASURING SAID GAMMA RAYS WHICH ARE COEXISTENT WITHIN A PREDETERMINED TIME INTERVAL OF EACH OTHER, INDIVIDUALLY DETERMINING THE TOTAL RADIATION OF SAID ORE, CORRELATING THE MEASUREMENT OF SAID GAMMA RAYS TO THE DETERMINATION OF OVER-ALL RADIATIONS TO OBTAIN THE RATIO THEREOF, RELATING SAID RATIO TO SAID PREDETERMINED COPPER CONCENTRATION, AND DIRECTING SAID PIECES TO ONE POINT WHEN SAID RATIO IS ABOVE SAID PREDETERMINED CONCENTRATION AND TO ANOTHER POINT WHEN SAID RATIO IS BELOW SAID CONCENTRATION.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |