US3825601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroformylation of internal olefins
Assignee: Sunoco Inc
•
Filing: 1970-12-22
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Granted: 1974-07-23
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Expires: 1990-12-22
Abstract
Abstract HYDROFORMYLATION OF INTERNAL OLEFINS, AS OPPOSED TO TERMINAL OLEFINS, TO PRODUCE LINEAR ALDEHYDES IN IMPROVED YIELDS, IS ACHIEVED BY THE ADDITION OF A SULFONIC ACID-TYPE ION EXCHANGE RESIN TO CATALYSTS OF THE FORMULA RH(H)(CO)(PH3P)3, WHERE PH IS PHENYL.
Inventors
- 👤 L Rennick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:03
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50
Claims Analysis
Total Claims: 0
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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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |