Patent US2752407A successfully refreshed from Google Patents.
US2752407A
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US
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Short-time reactions of gases at elevated temperatures
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1951-09-17
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Granted: 1956-06-26
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Expires: 1971-09-17
Abstract
No abstract record available.
Inventors
- 👤 Robert P Cahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:32
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/34; C; C07; C07C; C07C4/00; C07C4/02; C07C4/025; Y; Y10; Y10S; Y10S48/00; Y10S48/04; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/925
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
AN AUTOTHERMIC PROCESS FOR CRACKING SATURATED HYDROCARBONS TO ETHYLENE WHICH COMPRISES SEPARATELY INTRODUCING A RELATIVELY COOL ETHANE CONTAINING HYDROCARBON GAS STREAM AND A RELATIVELY COOL OXYGEN-CONTAINING GAS STREAM INTO SEPARATE ADJACENT PACKED PREHEATING ZONES IN THE LOWER PART OF A PACKED COLUMN, THE AMOUNT OF OXYGENCONTAINING GAS INTRODUCED BEING SUFFICIENT TO OXIDIZE ENOUGH OF THE HYDROCARBON GAS TO SUPPLY THE REQUIRED HEAT OF CRACKING, INTRODUCING FINELY DIVIDED RELATIVELY COLD
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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) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |