Patent US2813824A successfully refreshed from Google Patents.
US2813824A
Expired / Lapsed
US
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Process for coking hydrocarbonaceous liquids
Assignee: Consolidation Coal Co
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Filing: 1955-03-09
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Granted: 1957-11-19
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Expires: 1975-03-09
Abstract
No abstract record available.
Inventors
- 👤 Gorin Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:02
CPC Classifications
C; C10; C10B; C10B55/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF PREPARING LOW-ASH COKE FROM AN ASH-CONTAINING HYDROCARBONACEOUS LIQUID WHICH COMPRISES PASSING SAID LIQUID THROUGH A FIRST MILD COKING ZONE AT 950 TO 1200*F., RECOVERING A HIGH-ASH COKE THEREFROM, SEPARATELY CONTINOUSLY REMOVING THEREFROM THE UNCOKED PORTION OF THE FEEDSTOCK AS A SUBSTANTIALLY ASH-FREE VAPOR, PASSING AT LEAST THE HIGH-BOILING PORTION THEREOF THROUGHH A SECOND THERMAL TREATING ZONE AT 950 TO 1600*F., RECOVERING A LOW-ASH COKE AND SEPARATELY CONTINUOUSLY REMOVING THE UNCOKED VAPOR FROM SAID SECOND ZONE.
Claim 2
Independent Claim
78 words
THE METHOD OF PREPARING LOW-ASH COKE FROM AN ASH-CONTAINING HYDROCARBONACEOUS LIQUID WHICH COMPRISES PASSING SAID LIQUID THROUGH A FIRST MILD COKING ZONE AT 950 TO 1200*F., RECOVERING A HIGH-ASH COKE THEREFROM, SEPARATELY CONTINOUSLY REMOVING THEREFROM THE UNCOKED PORTION OF THE FEEDSTOCK AS A SUBSTANTIALLY ASH-FREE VAPOR, PASSING AT LEAST THE HIGH-BOILING PORTION THEREOF THROUGHH A SECOND THERMAL TREATING ZONE AT 950 TO 1600*F., RECOVERING A LOW-ASH COKE AND SEPARATELY CONTINUOUSLY REMOVING THE UNCOKED VAPOR FROM SAID SECOND ZONE.
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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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |