Patent US2747986A successfully refreshed from Google Patents.
US2747986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovering metals from hydroformylation products
Assignee: Gulf Research and Development Co
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Filing: 1951-06-01
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Granted: 1956-05-29
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Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Gwynn
- 👤 William A Horne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:05
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; C22; C22B; C22B5/00; C22B5/02; C22B5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A PROCESS WHICH COMPRISES HYDROFORMYLATING A CHARGE COMPRISING CARBON MONOXIDE, HYDROGEN AND AN OLEFIN WITH A COBALT HYDROFORMYLATION CATALYST AT SELECTED TEMPERATURES WITHIN THE RANGE OF ABOUT 260* TO ABOUT 440* F. AND A SELECTED PRESSURE IN THE RANGE OF ABOUT 1500 TO ABOUT 7500 POUNDS PER SQUARE INCH, THEREBY FORMING A LIQUID HYDROFORMYLATION PRODUCT CONTAINING COBALT CARBONYL, REDUCING THE TEMPERATURE AND PRESSURE ON SAID HYDROFORMYLATION PRODUCT, PASSING SAID LATTER HYDROFORMYLATION PRODUCT DOWNWARDLY THROUGH A DEMETALLING ZONE CONTAINING A COMBUSTIBLE. POROUS, CARBONACEOUS SUPPORT, PASSING STEAM UPWARDLY THROUGH SAID DEMETALLING ZONE TO OBTAIN A TEMPERATURE OF ABOUT 375* F. ADJACENT THE BOTTOM OF SAID DEMETALLING ZONE AND A TEMPERATURE OF ABOUT 70* F. ADJACENT THE TOP OF SAID DEMETALLING ZONE SO AS TO DECOMPOSE THE COBALT CARBONYL INTO ELEMENTAL COBALT AND DEPOSIT THE SAME UPON SAID SUPPORT, AND THEREAFTER RECOVERING THE COBALT FROM SAID SUPPORT.
Claim 2
Dependent Claim
144 words
A PROCESS WHICH COMPRISES HYDROFORMYLATING A CHARGE COMPRISING CARBON MONOXIDE, HYDROGEN AND AN OLEFIN WITH A COBALT HYDROFORMYLATION CATALYST AT SELECTED TEMPERATURES WITHIN THE RANGE OF ABOUT 260* TO ABOUT 440* F. AND A SELECTED PRESSURE IN THE RANGE OF ABOUT 1500 TO ABOUT 7500 POUNDS PER SQUARE INCH, THEREBY FORMING A LIQUID HYDROFORMYLATION PRODUCT CONTAINING COBALT CARBONYL, REDUCING THE TEMPERATURE AND PRESSURE ON SAID HYDROFORMYLATION PRODUCT, PASSING SAID LATTER HYDROFORMYLATION PRODUCT DOWNWARDLY THROUGH A DEMETALLING ZONE CONTAINING A COMBUSTIBLE. POROUS, CARBONACEOUS SUPPORT, PASSING STEAM UPWARDLY THROUGH SAID DEMETALLING ZONE TO OBTAIN A TEMPERATURE OF ABOUT 375* F. ADJACENT THE BOTTOM OF SAID DEMETALLING ZONE AND A TEMPERATURE OF ABOUT 70* F. ADJACENT THE TOP OF SAID DEMETALLING ZONE SO AS TO DECOMPOSE THE COBALT CARBONYL INTO ELEMENTAL COBALT AND DEPOSIT THE SAME UPON SAID SUPPORT, AND THEREAFTER RECOVERING THE COBALT FROM SAID SUPPORT.
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |