US3271268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of calcining coke
Assignee: Marathon Oil Co
•
Filing: 1963-01-21
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Granted: 1966-09-06
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Victor D Allred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:25
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/02; C10L9/06; B; B01; B01J; B01J6/00; B01J6/001; C10L9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A CONTINOUS PROCESS FOR CALCINING COKE COMPRISING IN COMBINATION THE STEPS OF PASSING COKE PARTICLES AS A MOVING BED COCURRENTLY INTO A COMBUSTION ZONE WITH AN AMOUNT OF OXIDANT STOICHIOMETICALLY INSUFFICIENT TO CAUSE COMPLETE COMBUSTION OF THE COKE UNDER CONDITIONS SUCH THAT ONLY A MINOR PORTION OF THE COKE IS OXIDIZED THE REMAINING COKE BEING CALCINED, WITHOUT SUBSTANTIAL OXIDATION, BY HEAT IMPARTED FROM THE COMBUSTION; AND THEREAFTER PASSING BOTH THE SOLID AND GASEOUS PRODUCTS FROM
Claim 2
Dependent Claim
75 words
A CONTINOUS PROCESS FOR CALCINING COKE COMPRISING IN COMBINATION THE STEPS OF PASSING COKE PARTICLES AS A MOVING BED COCURRENTLY INTO A COMBUSTION ZONE WITH AN AMOUNT OF OXIDANT STOICHIOMETICALLY INSUFFICIENT TO CAUSE COMPLETE COMBUSTION OF THE COKE UNDER CONDITIONS SUCH THAT ONLY A MINOR PORTION OF THE COKE IS OXIDIZED THE REMAINING COKE BEING CALCINED, WITHOUT SUBSTANTIAL OXIDATION, BY HEAT IMPARTED FROM THE COMBUSTION; AND THEREAFTER PASSING BOTH THE SOLID AND GASEOUS PRODUCTS FROM
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |