US3702345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for converting ethylene to normal alpha olefins
Assignee: Gulf Research and Development Co
•
Filing: 1970-10-06
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Granted: 1972-11-07
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Expires: 1990-10-06
Abstract
Abstract IN A PROCESS WHERE ETHYLENE IS TREATED WITH AN ALUMINUM HYDROCARBON TO OBTAIN A PRODUCT PREDOMINATING IN NORMAL ALPHA OLEFINS, THE IMPROVEMENT WHICH INVOLVES HEATING SAID PRODUCT AT AN INCREASED TEMPERATURE LEVEL FOR A SHORT PERIOD OF TIME PRIOR TO RECOVERY OF THE NORMAL ALPHA OLEFINS.
Inventors
- 👤 Herbert B Fernald
- 👤 William Gall
- 👤 Russell G Hay
- 👤 Alfred N Kresge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:07
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/88; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/949; Y10S585/952
Claims Analysis
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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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |