US3644560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxydehydrogenation of ethane
Assignee: Ethyl Corp
•
Filing: 1969-07-14
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Granted: 1972-02-22
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Expires: 1989-07-14
Abstract
Abstract PROCESS FOR THE OXYDEHYDROGENATION OF ETHANE TO ETHYLENE BY USING CATALYTIC QUANTITIES OF HYDROGEN HALIDE. A PREFERRED CATALYST INCLUDES A LOW CONCENTRATION OF COPPER OR IRON HALIDE WITH RARE EARTH HALIDE, THE RATIO OF RARE EARTH HALIDE TO COPPER OR IRON HALIDE BEING GREATER THAN 1:1. OTHER PREFERRED CATALYST COMPONENTS INCLUDE ALKALI METAL HALIDE AND MANGANESE HALIDE.
Inventors
- 👤 William Q Beard Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C5/00; C07C5/42; C07C5/54; C07C5/56; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |