US3307938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extracting metal values
Assignee: Cyprus Amax Minerals Co
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Filing: 1964-04-27
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Granted: 1967-03-07
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Expires: 1984-04-27
Abstract
No abstract record available.
Inventors
- 👤 Richard A Ronzio
- 👤 Wayne C Hazen
- 👤 Enzo L Coltrinari
- 👤 Robert E Cuthbertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:59
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/30; C22B34/34; C01; C01G; C01G39/00; C01G39/003; C22B3/00; C22B3/20; C22B3/22; C22B3/24; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
PROCESS FOR EXTRACTING MOLYBDENUM VALUES FROM AN ORE CONTAINING OXIDIZED MOLYBDENUM IN ASSOCIATION WITH IRON, COMPRISING: LEACHING THE ORE WITH SULFURIC ACID AND SULFUR DIOXIDE, DESORBING THE SULFUR DIOXIDE, ADSORBING THE MOLYBDENUM VALUES WITH ACTIVATED CHARCOAL, AND STRIPPING THE MOLYBDENUM VALUES FROM THE LOADED CHARCOAL.
Claim 2
Dependent Claim
45 words
PROCESS FOR EXTRACTING MOLYBDENUM VALUES FROM AN ORE CONTAINING OXIDIZED MOLYBDENUM IN ASSOCIATION WITH IRON, COMPRISING: LEACHING THE ORE WITH SULFURIC ACID AND SULFUR DIOXIDE, DESORBING THE SULFUR DIOXIDE, ADSORBING THE MOLYBDENUM VALUES WITH ACTIVATED CHARCOAL, AND STRIPPING THE MOLYBDENUM VALUES FROM THE LOADED CHARCOAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |