Patent US2604495A successfully refreshed from Google Patents.
US2604495A
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Hydrocarbon dehydrogenation in presence of added carbon dioxide
Assignee: Hercules Powder Co
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Filing: 1948-07-21
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Granted: 1952-07-22
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Expires: 1968-07-21
Abstract
No abstract record available.
Inventors
- 👤 Eero O Erkko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:58
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C51/00; C07C51/10; C07C51/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE PROCESS OF DEHYDROGENATING ETHANE TO PRODUCE ETHYLENE WHICH COMPRISES CONTACTING A MIXTURE OF CARBON DIOXIDE AND ETHANE WITH AN IRON OXIDE CATALYST, THE MAJOR PROPORTION OF WHICH IS IRON OXIDE, AT A TEMPERATURE OF ABOUT 750* C. TO ABOUT 950* C. FOR A PERIOD OF LESS THAN ABOUT 3 SECONDS.
Claim 2
Dependent Claim
17 words
THE PROCESS OF CLAIM 6 WHEREIN THE IRON OXIDE CATALYST CONTAINS AT LEAST ONE METAL OXIDE PROMOTER.
References Cited (Backward Citations)
US2315107A
Cited
US2367620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |