US3752745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of metal values from ocean floor nodules
Assignee: Deepsea Ventures Inc
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Filing: 1971-05-12
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Granted: 1973-08-14
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Expires: 1991-05-12
Abstract
Abstract METHOD FOR RECOVERING METAL VALUES FROM OCEAN FLOOR NODULES OF THE TYPE CONTAINING IRON, MANGANESE, COPPER COBALT, AND NICKEL, COMPRISING GRINDING THE NODULES INTO PARTICLES, HYDROCHLORINATING TO OBTAIN METAL CHLORIDES AS REACTION PRODUCTS, CONVERTING THE IRON CHLORIDE TO IRON OXIDE, LEACHING THE REACTION PRODUCT, REMOVING THE IRON OXIDE, SEPARATING THE COPPER CHLORIDE, NICKEL CHLORIDE, AND COBALT CHLORIDE SOLUTIONS FROM THE MANGANESE CHLORIDE SOLUTION BY MEANS OF LIQUID ION EXCHANGE AND RECOVERING THE METAL VALUES BY ELECTROLYZING OR BY ALUMINOTHERMAL REDUCTION.
Inventors
- 👤 W Kane
- 👤 P Cardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:23
CPC Classifications
C; C22; C22B; C22B47/00; C22B47/0018; C22B47/0045; C22B47/0081; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/282; C22B3/30; C22B3/36; C22B47/0054; C22B47/0063; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/04
Claims Analysis
Total Claims: 0
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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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |