US3763258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two step dehydrogenation process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-06-02
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Granted: 1973-10-02
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Expires: 1991-06-02
Abstract
Abstract ORGANIC COMPOUNDS HAVING A DEHYDROGENATABLE CARBON TO CARBON BOND ARE DEHYDROGENATED IN A VAPOR PHASE REACTION BY PASSING SAID COMPOUNDS WITH STEAM INTO A FIRST REACTION ZONE AND REACTING SAID MIXTURE OVER AN AUTOREGENERATIVE DEHYDROGENATION CATALYST AND THEREAFTER CON- TACTING THE PRODUCTS FORMED IN THE FIRST REACTION ZONE IN A SECOND REACTION ZONE WITH A SULFUR OXIDE OVER A CRITICALLY DEFINED LOW SURFACE AREA CATALYST.
Inventors
- 👤 A Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:25
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/46; C07C15/00; C07C15/40; C07C15/42; C07C15/44; C07C15/46; C07C5/32; C07C5/321; C07C5/322
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |