US3702346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of ethylbenzene to styrene
Assignee: Honeywell UOP LLC
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Filing: 1971-06-30
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Granted: 1972-11-07
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Expires: 1991-06-30
Abstract
Abstract IN A PROCESS FOR THE STEAM DEHYDROGENATION OF ETHYLBENZENE TO STYRENE, THE SELECTIVITY OF THE DEHYDROGENATION REACTION IS IMPROVED BY MAINTAINING THE REACTOR PRODUCTS SETTLER, WHEREIN CONDENSED REACTOR PRODUCTS ARE SEPARATED, AT A PRESSURE LESS THAN ATMOSPHERIC.
Inventors
- 👤 James S Kellar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:13
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/954
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) | 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 |