US3776967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation process
Assignee: Lummus Technology LLC
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Filing: 1971-10-14
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Granted: 1973-12-04
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Expires: 1991-10-14
Abstract
Abstract PROCESS FOR DEHYDROGENATING A FEED CONTAINING EITHER AN ALKANE, CYCLOALKANE, MONO-HALO SUBSTITUTED DERIVATIVE THEREOF OR ALKYL SUBSTITUTED ARMOATIC 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
- 👤 H Riegel
- 👤 H Schindler
- 👤 M Sze
- 👤 M Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/42; C07C5/44
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |