US3007793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of spectrographically nickel-free cobalt
Assignee: Allis Chalmers Corp
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Filing: 1960-05-27
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Granted: 1961-11-07
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Expires: 1980-05-27
Abstract
No abstract record available.
Inventors
- 👤 Patrick G Grimes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:38
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/306; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD OF ISOLATING SPECTROGRAPHICALLY NICKELFREE COBALT FROM A RAW SOLUTION CONTAINING NICKEL AND COBALT COMPRISING: INTRODUCING AN OPERABLE B-DIKETONE INTO SAID SOLUTION AND SUBSEQUENT THERETO, A PH ADJUSTER TO BRING THE PH OF SAID SOLUTION TO A VALUE OF FROM ABOUT 4 TO ABOUT 7 TO PRECIPITATE NICKEL AND COBALT AS COBALT AND NICKEL B-DIKETONATES; SEPARATING SAID B-DIKETONATE PRECIPITATE FROM SAID SOLUTION; REMOVING SURPLUS LIQUID FROM SAID PRECIPITATE; HEATING SAID PRECIPITATE TO A TEMPERATURE OF AT LEAST ABOUT 140*C. TO VOLATILIZE SAID COBALT B-DIKETONATE WITHOUT VOLATILIZING SAID NICKEL B-
Claim 2
Independent Claim
90 words
THE METHOD OF ISOLATING SPECTROGRAPHICALLY NICKELFREE COBALT FROM A RAW SOLUTION CONTAINING NICKEL AND COBALT COMPRISING: INTRODUCING AN OPERABLE B-DIKETONE INTO SAID SOLUTION AND SUBSEQUENT THERETO, A PH ADJUSTER TO BRING THE PH OF SAID SOLUTION TO A VALUE OF FROM ABOUT 4 TO ABOUT 7 TO PRECIPITATE NICKEL AND COBALT AS COBALT AND NICKEL B-DIKETONATES; SEPARATING SAID B-DIKETONATE PRECIPITATE FROM SAID SOLUTION; REMOVING SURPLUS LIQUID FROM SAID PRECIPITATE; HEATING SAID PRECIPITATE TO A TEMPERATURE OF AT LEAST ABOUT 140*C. TO VOLATILIZE SAID COBALT B-DIKETONATE WITHOUT VOLATILIZING SAID NICKEL B-
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) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |