Patent US2679543A successfully refreshed from Google Patents.
US2679543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of acetylene
Assignee: Union Oil Company of California
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Filing: 1951-05-14
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Granted: 1954-05-25
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Expires: 1971-05-14
Abstract
No abstract record available.
Inventors
- 👤 Dorsey William Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:16
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; C; C07; C07C; C07C2/00; C07C2/76; C07C2/78; B01J2219/00; B01J2219/00002; B01J2219/00004; B01J2219/00006; B01J2219/00049; B01J2219/00051; B01J2219/00121; B01J2219/00164; B01J2219/00166; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
THE PROCESS FOR THE PRODUCTION OF ACETYLENE WHICH COMPRTISES PREHEATING A REACTANT GAS COMPRISING A HYDROCARBON AND OXYGEN TO A TEMPERATURE BELOW THAT AT WHICH REACTION BETWEEN THE COMPONENTS OF SAID REACTANT GAS OCCURS TO ANY SUBSTANTIAL EXTENT BUT SUCH THAT UPON THE SUBSEQUENT ADMIXTURE OF THE PREHEATED REACTANT GAS WITH A HYDROGEN-CONTAINING RECYCLE GAS AN EXOTHERMIC ACETYLENE-PRODUCING REACTION OCCURS IN WHICH A TEMPERATURE BETWEEN ABOUT 1100* C. AND ABOUT 1500* C. IS ATTAINED; ADMIXING THE PREHEATED REACTANT GAS WITH SAID HYDROGEN-CONTAINING RECYCLE GAS IN THE SUBSTANTIAL ABSENCE OF A CATALYST WHEREBY SAID REACTION OCCURS WITH THE FORMATION OF A HOT PRODUCT GAS; COOLING SAID HOT PRODUCT GAS TO A TEMPERATURE AT WHICH SUBSTANTIALLY NO FURTHER REACTION OCCURS WITHIN FROM ABOUT 0.001 TO ABOUT 0.05 SECOND AFTER SAID ADMIXING OF THE HYDROGEN-CONTAINING RECYCLE GAS WITH THE PREHEATED REACTANT GAS; PASSING THE COOLED PRODUCT GAS IN INDIRECT HEAT EXCHANGE RELATIONSHIP WITH A VAPORIZABLE LIQUID HAVING A BOILING POINT BELOW
Claim 2
Dependent Claim
158 words
THE PROCESS FOR THE PRODUCTION OF ACETYLENE WHICH COMPRTISES PREHEATING A REACTANT GAS COMPRISING A HYDROCARBON AND OXYGEN TO A TEMPERATURE BELOW THAT AT WHICH REACTION BETWEEN THE COMPONENTS OF SAID REACTANT GAS OCCURS TO ANY SUBSTANTIAL EXTENT BUT SUCH THAT UPON THE SUBSEQUENT ADMIXTURE OF THE PREHEATED REACTANT GAS WITH A HYDROGEN-CONTAINING RECYCLE GAS AN EXOTHERMIC ACETYLENE-PRODUCING REACTION OCCURS IN WHICH A TEMPERATURE BETWEEN ABOUT 1100* C. AND ABOUT 1500* C. IS ATTAINED; ADMIXING THE PREHEATED REACTANT GAS WITH SAID HYDROGEN-CONTAINING RECYCLE GAS IN THE SUBSTANTIAL ABSENCE OF A CATALYST WHEREBY SAID REACTION OCCURS WITH THE FORMATION OF A HOT PRODUCT GAS; COOLING SAID HOT PRODUCT GAS TO A TEMPERATURE AT WHICH SUBSTANTIALLY NO FURTHER REACTION OCCURS WITHIN FROM ABOUT 0.001 TO ABOUT 0.05 SECOND AFTER SAID ADMIXING OF THE HYDROGEN-CONTAINING RECYCLE GAS WITH THE PREHEATED REACTANT GAS; PASSING THE COOLED PRODUCT GAS IN INDIRECT HEAT EXCHANGE RELATIONSHIP WITH A VAPORIZABLE LIQUID HAVING A BOILING POINT BELOW
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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) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |