Patent CA844038A successfully refreshed from Google Patents.
Patent US234763A successfully refreshed from Google Patents.
US2963416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coke production from petroleum stocks
Assignee: General Carbon and Chemical Corp
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Filing: 1957-10-09
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Granted: 1960-12-06
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Expires: 1977-10-09
Abstract
No abstract record available.
Inventors
- 👤 John W Ward
- 👤 Bierbaum J Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:37
CPC Classifications
C; C10; C10B; C10B55/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS FOR PRODUCING COKE OF ELECTRODE QUALITY FROM PETROLEUM STOCKS WHICH COMPRISES PRETREATING THE SAID STOCK PRIOR TO COKING TO REMOVE IMPURITIES BY TREATING SAID STOCK IN THE PRESENCE OF SULFUR REMOVING AGENTS TO CONVERT SULFUR COMPOUNDS PRESENT IN THE STOCK TO VOLATILE SULFUR COMPOUNDS, REMOVING SAID COMPOUNDS, PASSING THE RESULTANT PURIFIED MIXTURE TO A FRACTIONATING TOWER, REMOVING LIGHT HYDROCARBON FRACTIONATED PRODUCTS FROM SAID TOWER, LEAVING BEHIND RESIDUAL LIGHT AND HEAVY FRACTIONS, PASSING SAID LIGHT AND HEAVY FRACTIONS FROM SAID TOWER TO A FURNACE FOR FURTHER HEATING, PASSING A PORTION OF SAID LIGHT FRACTION COMING FROM SAID FURNACE BACK TO SAID TOWER, THEN PASSING THE REMAINDER OF SAID HEATED FRACTIONS UNDER CONTROLLED CONDITIONS TO A COKING CHAMBER, THEREBY CONTROLLING THE TEMPERATURE IN THE COKING CHAMBER WITHIN A NARROW RANGE, AND COKING THE SAID FRACTIONS.
Claim 2
Dependent Claim
135 words
A PROCESS FOR PRODUCING COKE OF ELECTRODE QUALITY FROM PETROLEUM STOCKS WHICH COMPRISES PRETREATING THE SAID STOCK PRIOR TO COKING TO REMOVE IMPURITIES BY TREATING SAID STOCK IN THE PRESENCE OF SULFUR REMOVING AGENTS TO CONVERT SULFUR COMPOUNDS PRESENT IN THE STOCK TO VOLATILE SULFUR COMPOUNDS, REMOVING SAID COMPOUNDS, PASSING THE RESULTANT PURIFIED MIXTURE TO A FRACTIONATING TOWER, REMOVING LIGHT HYDROCARBON FRACTIONATED PRODUCTS FROM SAID TOWER, LEAVING BEHIND RESIDUAL LIGHT AND HEAVY FRACTIONS, PASSING SAID LIGHT AND HEAVY FRACTIONS FROM SAID TOWER TO A FURNACE FOR FURTHER HEATING, PASSING A PORTION OF SAID LIGHT FRACTION COMING FROM SAID FURNACE BACK TO SAID TOWER, THEN PASSING THE REMAINDER OF SAID HEATED FRACTIONS UNDER CONTROLLED CONDITIONS TO A COKING CHAMBER, THEREBY CONTROLLING THE TEMPERATURE IN THE COKING CHAMBER WITHIN A NARROW RANGE, AND COKING THE SAID FRACTIONS.
References Cited (Backward Citations)
US2340974A
Cited
US2574449A
Cited
US2703308A
Cited
US2717862A
Cited
US2780586A
Cited
US2775549A
Cited
US2849384A
Cited
US2777802A
Cited
US2871182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |