Patent US2843632A successfully refreshed from Google Patents.
US2843632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxo process
Assignee: Gulf Research and Development Co
•
Filing: 1956-09-07
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Granted: 1958-07-15
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Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Gwynn
- 👤 Rex W Smyth
- 👤 John V Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:55
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF PRODUCING ALDEHYDES WHICH COMPRISES REACTING AN OLEFISN WITH SYNTHESIS GAS COMPRISING HYDROGEN AND CARBON MONOXIDE IN THE PRESENCE OF A METALLIC HYDROFORMYLATION REACTIOSN CATALYST AT ANS ELEVATED PRESSURE AND ELEVATED TEMPERATURE TO OBTAIN A HYDROFORMYLATION REACTION PRODUCT COMPRISING AN ALDEHYDE HAVING SONE MORE CARBON THAN SAID OLEFIN AND AT LEAST SONE DISSOLVED METAL CARBONYL, PASSING SAID HYDROFORMLATION REACTION PRODUCT TO A DEMETALLING ZONE CONTAINING CALCIUM CARBONATE, PASSING STEAM TO SAID DEMETALLING ZONE TOS RAISE THE TEMPERATURE OF THE RESULTING MIXTURE TO A TEMPERATURE SUFFICIENTLY HIGH TO DECOMPOSE SAID METAL CARBONYL AND DEPOSIT THE CORRESPONDING METAL ON SAID CALCIUM CARBONATE, AND THEREAFTER SEPARATING THE TREATED HYDROFORMYLATION REACTION PRODUCT FROM WATER RESULTISNG FROSM CONDENSATION OF SAID STEAM.
Claim 2
Independent Claim
118 words
A METHOD OF PRODUCING ALDEHYDES WHICH COMPRISES REACTING AN OLEFISN WITH SYNTHESIS GAS COMPRISING HYDROGEN AND CARBON MONOXIDE IN THE PRESENCE OF A METALLIC HYDROFORMYLATION REACTIOSN CATALYST AT ANS ELEVATED PRESSURE AND ELEVATED TEMPERATURE TO OBTAIN A HYDROFORMYLATION REACTION PRODUCT COMPRISING AN ALDEHYDE HAVING SONE MORE CARBON THAN SAID OLEFIN AND AT LEAST SONE DISSOLVED METAL CARBONYL, PASSING SAID HYDROFORMLATION REACTION PRODUCT TO A DEMETALLING ZONE CONTAINING CALCIUM CARBONATE, PASSING STEAM TO SAID DEMETALLING ZONE TOS RAISE THE TEMPERATURE OF THE RESULTING MIXTURE TO A TEMPERATURE SUFFICIENTLY HIGH TO DECOMPOSE SAID METAL CARBONYL AND DEPOSIT THE CORRESPONDING METAL ON SAID CALCIUM CARBONATE, AND THEREAFTER SEPARATING THE TREATED HYDROFORMYLATION REACTION PRODUCT FROM WATER RESULTISNG FROSM CONDENSATION OF SAID STEAM.
References Cited (Backward Citations)
US2638485A
Cited
GB660737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |