US3702311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halodehydrogenation catalyst
Assignee: Ethyl Corp
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Filing: 1969-07-14
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Granted: 1972-11-07
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Expires: 1989-07-14
Abstract
Abstract A SUPPORTED CATALYST FOR THE HALODEHYDROGENATION OF ETHANE TO ETHYLENE WHICH CONTAINS: (A) COPPER HALIDE AND/ OR IRON HALIDE; (B) AN ALKALI METAL HALIDE; (C) A RARE EARTH HALIDE; AND (D) ONE OF THE FOLLOWING COMPOUNDS: MANGANESE HALIDE, ZINC HALIDE, CALCIUM HALIDE OR TITANIUM HALIDE.
Inventors
- 👤 William Q Beard Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; C; C07; C07C; C07C5/00; C07C5/42; C07C5/44; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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 |