US3637895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation process using molten copper chlorides and oxychloride mixtures
Assignee: Lummus Technology LLC
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Filing: 1968-10-23
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Granted: 1972-01-25
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Expires: 1988-10-23
Abstract
Abstract PROCESS FOR DEHYDROGENATING A FEED CONTAINING EITHER AN ALKANE, CYCLOALKANE, MONO-HALO SUBSTITUTED DERIVATIVE THEREOF, OR ALKYL SUBSTITUTED AROMATIC HYDROCARBON WHEREIN THE FEED IS CONTACTED WITH A MELT CONTAINING A MULTIVALENT METAL HALIDE IN BOTH ITS HIGHER AND LOWER VALENCE STATE, SUCH AS A MIXTURE OF CUPRIC AND CUPROUS CHLORIDE. IN ACCORDANCE WITH A PREFERRED EMBODIMENT, THE MELT IS PREVIOUSLY CONTACTED WITH AN OXYGEN CONTAINING GAS TO PRODUCE THE CORRESPONDING OXYHALIDE OF THE METAL, WHEREBY THE REACTION MAY BE EFFECTED ON A CONTINUOUS BASIS.
Inventors
- 👤 Herbert Riegel
- 👤 Harvey D Schindler
- 👤 Morgan C Sze
- 👤 Maurice E Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:34
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/35; C07C17/357; C07C5/00; C07C5/42; C07C5/44; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |