Patent US2875146A successfully refreshed from Google Patents.
US2875146A
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Prevention of coke depositions in a hydrocarbon coking zone
Assignee: PHILLIPS PETROLCUM Co
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Filing: 1954-04-15
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Granted: 1959-02-24
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Expires: 1974-04-15
Abstract
No abstract record available.
Inventors
- 👤 Dick S Hall
- 👤 Henry W Hennigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:27
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; B01J19/0026; B01J8/00; C; C10; C10G; C10G9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN IMPROVED REACTOR FOR PEBBLE HEATER APPARATUS WHICH COMPRISES, IN COMBINATION, A CLOSED UPRIGHT ELONGATED SHELL; PEBBLE INLET MEANS IN THE UPPER END OF SAID SHELL; PEBBLE OUTLET MEANS IN THE LOWER PORTION OF SAID SHELL; FLUID INLET MEANS IN THE LOWER PORTION OF SAID SHELL; AN EFFUENT OUTLET CONDUIT EXTENDING FROM THE INTERIOR OF THE UPPER PORTION OF SAID SHELL TO THE EXTERIOR OF SAID SHELL; A TUBE DISPOSED WITHIN AND SUBSTANTIALLY CO-EXTENSIVE WITH THAT PORTION OF SAID EFFUENT OUTLET CONDUIT WITHIN SAID SHELL AND SPACED APART FROM SAID EFFUENT OUTLET CONDUIT SO AS TO FORM AN ANNULAR SPACE THEREBETWEEN SAID ANNULAR SPACE BEING IN OPEN COMMUNICATION WITH THE INTERIOR OF SAID SHELL; AND MEANS FOR INTRODUCING AN INERT GAS INTO SAID ANNULAR GAS.
Claim 2
Dependent Claim
125 words
AN IMPROVED REACTOR FOR PEBBLE HEATER APPARATUS WHICH COMPRISES, IN COMBINATION, A CLOSED UPRIGHT ELONGATED SHELL; PEBBLE INLET MEANS IN THE UPPER END OF SAID SHELL; PEBBLE OUTLET MEANS IN THE LOWER PORTION OF SAID SHELL; FLUID INLET MEANS IN THE LOWER PORTION OF SAID SHELL; AN EFFUENT OUTLET CONDUIT EXTENDING FROM THE INTERIOR OF THE UPPER PORTION OF SAID SHELL TO THE EXTERIOR OF SAID SHELL; A TUBE DISPOSED WITHIN AND SUBSTANTIALLY CO-EXTENSIVE WITH THAT PORTION OF SAID EFFUENT OUTLET CONDUIT WITHIN SAID SHELL AND SPACED APART FROM SAID EFFUENT OUTLET CONDUIT SO AS TO FORM AN ANNULAR SPACE THEREBETWEEN SAID ANNULAR SPACE BEING IN OPEN COMMUNICATION WITH THE INTERIOR OF SAID SHELL; AND MEANS FOR INTRODUCING AN INERT GAS INTO SAID ANNULAR GAS.
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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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |