Patent US2814564A successfully refreshed from Google Patents.
US2814564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying metals and consolidating the same
Assignee: Chemetals Corp
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Filing: 1957-07-17
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Granted: 1957-11-26
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Expires: 1977-07-17
Abstract
No abstract record available.
Inventors
- 👤 William M Hayden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:24
CPC Classifications
C; C22; C22B; C22B7/00; C22B7/006; B; B22; B22F; B22F3/00; B22F3/18; B22F9/00; B22F9/16; B22F9/18; B22F9/24; B22F9/26; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF RECOVERING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, NICKEL AND COBALT INLT IN WROUGHT FORM FROM AN IMPURE RAW MATERIAL CONTAINING SUCH METAL WHICH COMPRISES DISSOLVING SUCH METAL FROM THE RAW MATERIAL IN AN AQUEOUS LEACH SOLUTION, THEN INTRODUCING A HYDROGEN GAS INTO SAID SOLUTION WHILE THE SOLUTION IS UNDER SUPER ATMOSPHERIC PRESSURE AND AT A TEMPERATURE EXCEEDING ITS NORMAL BOILING TEMPEATURE WHEREBY THE METAL IS PRECIPITATED IN SUBSTANTIALY PURE PULVERULENT METALLIC FORM, SEPARATING SAID PRECIPITATEED FROM THE RESIDUAL SOLUTION, ROLLING SAID PRECIPITATE PROMPT-LY WHILE THE METAL PARTICLES THEREOF ARE STILL IN THEIR FRESHLY PRECIPITATED STATE INTO A CONSOLIDATED BAR, AND SUBJECTING THE CONSOLIDATED BAR TO SINTERING AND FURTHER ROLLING TO FORM A WROUGHT METAL BAR..
Claim 2
Independent Claim
121 words
THE METHOD OF RECOVERING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, NICKEL AND COBALT INLT IN WROUGHT FORM FROM AN IMPURE RAW MATERIAL CONTAINING SUCH METAL WHICH COMPRISES DISSOLVING SUCH METAL FROM THE RAW MATERIAL IN AN AQUEOUS LEACH SOLUTION, THEN INTRODUCING A HYDROGEN GAS INTO SAID SOLUTION WHILE THE SOLUTION IS UNDER SUPER ATMOSPHERIC PRESSURE AND AT A TEMPERATURE EXCEEDING ITS NORMAL BOILING TEMPEATURE WHEREBY THE METAL IS PRECIPITATED IN SUBSTANTIALY PURE PULVERULENT METALLIC FORM, SEPARATING SAID PRECIPITATEED FROM THE RESIDUAL SOLUTION, ROLLING SAID PRECIPITATE PROMPT-LY WHILE THE METAL PARTICLES THEREOF ARE STILL IN THEIR FRESHLY PRECIPITATED STATE INTO A CONSOLIDATED BAR, AND SUBJECTING THE CONSOLIDATED BAR TO SINTERING AND FURTHER ROLLING TO FORM A WROUGHT METAL BAR..
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) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |