Patent US2640016A successfully refreshed from Google Patents.
US2640016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of coke
Assignee: GREAT LAKES CARBON Corp
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Filing: 1950-08-31
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Granted: 1953-05-26
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Expires: 1970-08-31
Abstract
No abstract record available.
Inventors
- 👤 Samuel W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:52
CPC Classifications
C; C10; C10B; C10B57/00; C10B57/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS FOR MANUFACTURING METALLURGICAL COKE WHICH COMPRISES FORMING AN INTIMATE MIXTURE CONSISTING ESSENTIALLY OF CAKING COAL AT LEAST A MAJOR PORTION OF WHICH IS OF THE HIGH VOLATILE TYPE, AND FIVE TO TWENTY-FIVE PER CENT OF PETROLEUM COKE, THE MAJOR PORTION OF THE PARTICLES OF SAID MIXTURE PASSING A 1/8 INCH SCREEN, FORMING A DEEP BED OF THE MIXTURE IN A NARROW, VERTICAL COKING ZONE, COKING THE MIXTURE BY INDIRECT HEAT AT A TEMPERATURE OF ABOUT 982* TO 1204* C., SAID PETROLEUM COKE CONSISTING ESSENTIALLY OF COKE HAVING A VOLATILE CONTENT IN THE RANGE OF 14% TO ABOUT 35% BY WEIGHT AS DETERMINED BY A.S.T.M. PROCEDURE NO. D271-48 AS MODIFIED FOR PEAT AND LIGNITE, AND EXCLUSIVE OF VOLATILE MATERIAL EVOLVED AT TEMPERATURES OF 400-500* C., AND FURTHER CHARACTERIZED BY FORMING A DENSE, HARD, AGGLOMERATED COKE WHEN HEATED ACCORDING TO SAID PROCEDURE.
Claim 2
Dependent Claim
142 words
A PROCESS FOR MANUFACTURING METALLURGICAL COKE WHICH COMPRISES FORMING AN INTIMATE MIXTURE CONSISTING ESSENTIALLY OF CAKING COAL AT LEAST A MAJOR PORTION OF WHICH IS OF THE HIGH VOLATILE TYPE, AND FIVE TO TWENTY-FIVE PER CENT OF PETROLEUM COKE, THE MAJOR PORTION OF THE PARTICLES OF SAID MIXTURE PASSING A 1/8 INCH SCREEN, FORMING A DEEP BED OF THE MIXTURE IN A NARROW, VERTICAL COKING ZONE, COKING THE MIXTURE BY INDIRECT HEAT AT A TEMPERATURE OF ABOUT 982* TO 1204* C., SAID PETROLEUM COKE CONSISTING ESSENTIALLY OF COKE HAVING A VOLATILE CONTENT IN THE RANGE OF 14% TO ABOUT 35% BY WEIGHT AS DETERMINED BY A.S.T.M. PROCEDURE NO. D271-48 AS MODIFIED FOR PEAT AND LIGNITE, AND EXCLUSIVE OF VOLATILE MATERIAL EVOLVED AT TEMPERATURES OF 400-500* C., AND FURTHER CHARACTERIZED BY FORMING A DENSE, HARD, AGGLOMERATED COKE WHEN HEATED ACCORDING TO SAID PROCEDURE.
References Cited (Backward Citations)
US1815918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |