US2821559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aldehydes
Assignee: BP PLC
•
Filing: 1952-07-18
•
Granted: 1958-01-28
•
Expires: 1972-07-18
Abstract
No abstract record available.
Inventors
- 👤 Habeshaw John
- 👤 Rae Robin William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:21
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
PROCESS FOR THE PRODUCTION OF ALDEHYDES BY THE OXO SYNETHESIS REACTION AND WHEREIN SAID ALDEHYDES ARE PRODUCED IN AUGMENTED YIELDS WHICH COMPRISES REACTING AN OLEFINIC HYDROCARBON WITH CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A COBALT CATALYST UNDER THE CONDITIONS OF THE OXO SYNTHESIS REACTION, DISTILLING THE PRODUCT FOR THE SEPARATION OF AN ALDEHYDIC FRACTION COMPRISING THE ALDEHYDE CONSTITUTING THE MAIN OXO SYNTHESIS PRODUCT, AND OF A HIGH BOILING FRACTION, BOILING ABOVE SAID ALDEHYDIC FRACTION, SUBJECTING SAID HIGH BOILING FRACTION TO CRACKING CONDITIONS FOR THE PRODUCTION OF SAID ALDEHYDE AND RECOVERING THE SAID ALDEHYDE FROM THE PRODUCT OF THE CRACKING TREATMENT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |