US2768938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coking and grinding coke
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-05-24
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Granted: 1956-10-30
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Expires: 1974-05-24
Abstract
No abstract record available.
Inventors
- 👤 Homer Z Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:25
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; B; B02; B02C; B02C19/00; B02C19/06; B02C19/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A PROCESS FOR COKING HEAVY HYDROCARBON OILS BY CONTACTIN SAID OILS WITH A FLUIDIZED MASS OF COKE PARTICLES MAINTAINED AT A COKING TEMPERATURE IN A COKING ZONE, WHEREIB SAID COKE PARTICLES ACCRETE IN SIZE BY DEPOSITION OF COKE THEREON; A METHOD FOR PRODUCING THE REQUISITE SEED COKE FOR SAID PROCESS WHICH COMPRISES WITHDRAWING A PORTION OF SAID COKE PARTICLES FROM SAID PROCESS, INTRODUCING SAID PORTION WITHOUT COOLING INTO A NARROWLY CONFINED ELONGATED PASSAGEWAY UNDER A PRESSURE SUFFICIENT TO PREVENT BACK-FLOW, INJECTING LIQUID WATER INTO SAID CONDUIT TO PRODUCE STEAM AND TO COOL THE COKE PARTICLES MORE THAN
Claim 2
Dependent Claim
98 words
IN A PROCESS FOR COKING HEAVY HYDROCARBON OILS BY CONTACTIN SAID OILS WITH A FLUIDIZED MASS OF COKE PARTICLES MAINTAINED AT A COKING TEMPERATURE IN A COKING ZONE, WHEREIB SAID COKE PARTICLES ACCRETE IN SIZE BY DEPOSITION OF COKE THEREON; A METHOD FOR PRODUCING THE REQUISITE SEED COKE FOR SAID PROCESS WHICH COMPRISES WITHDRAWING A PORTION OF SAID COKE PARTICLES FROM SAID PROCESS, INTRODUCING SAID PORTION WITHOUT COOLING INTO A NARROWLY CONFINED ELONGATED PASSAGEWAY UNDER A PRESSURE SUFFICIENT TO PREVENT BACK-FLOW, INJECTING LIQUID WATER INTO SAID CONDUIT TO PRODUCE STEAM AND TO COOL THE COKE PARTICLES MORE THAN
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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) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |