US3746871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of determining the presence and amount of vanadium in an earth formation
Assignee: U S VANADIUM Corp A CORP OF DE
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Filing: 1970-12-02
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Granted: 1973-07-17
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Expires: 1990-12-02
Abstract
Abstract A method is provided for determining the vanadium content of an ore formation employing neutron activation of the ore formation from within a bore hole.
Inventors
- 👤 C Thompson
- 👤 F Cosolito
- 👤 H Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:46
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3240938A
Cited
US3514598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |