US2808370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgical coke
Assignee: GREAT LAKES CARBON Corp
•
Filing: 1953-10-12
•
Granted: 1957-10-01
•
Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:32
CPC Classifications
C; C10; C10B; C10B57/00; C10B57/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD MANUFACTURING FOUNDRY COKE WHICH COMPRISES FORMING AN INTIMATE MIXTURE CONSISTING ESSENTIALLY OF A MAJOR PORTION OF PETROLEUM COKE HAVING A VOLATILE CONTENT BETWEEN ABOUT 5 AND 14% BY WEIGHT, BEWEEN ABOUT 5 TO 15% BY WEIGHT OF ANTHRACITE, AN ESSENTIALLY HYDROCARBON PITCH BINDER IN AMOUNTS BETWEEN 10 TO 20% WHEN THE AMOUNT OF ANTHRACTE IS 5% AND BETWEEN 15 TO 30% WHEN THE AMOUNT OF ANTHRACITE IS 15% THE AMOUNT OF PITCH INCREASING AS THE AMOUNT ANTHRACITE IN THE MIXTURE INCREASES, AND THE BALANCE A SWELLING BITUMINOUS COAL HAVING A VOLATILE CONTENT BETWEN ABOUT 14 AND ABOUT 22% BY WEIGHT, THE MAJOR PORTION OF THE PARTICLES IN SAID MIXTURE PASSING A 1/4" SCREEN FORMING A DEEP BED OF SAID MIXTURE IN A NORROW VERTICAL COKING ZONE AND COKING THE MIXTURE BY INDIRECT HEAT AT A TEMPURATURE BETWEN ABOUT 1800 TO 2200* F.
Claim 2
Independent Claim
144 words
A METHOD MANUFACTURING FOUNDRY COKE WHICH COMPRISES FORMING AN INTIMATE MIXTURE CONSISTING ESSENTIALLY OF A MAJOR PORTION OF PETROLEUM COKE HAVING A VOLATILE CONTENT BETWEEN ABOUT 5 AND 14% BY WEIGHT, BEWEEN ABOUT 5 TO 15% BY WEIGHT OF ANTHRACITE, AN ESSENTIALLY HYDROCARBON PITCH BINDER IN AMOUNTS BETWEEN 10 TO 20% WHEN THE AMOUNT OF ANTHRACTE IS 5% AND BETWEEN 15 TO 30% WHEN THE AMOUNT OF ANTHRACITE IS 15% THE AMOUNT OF PITCH INCREASING AS THE AMOUNT ANTHRACITE IN THE MIXTURE INCREASES, AND THE BALANCE A SWELLING BITUMINOUS COAL HAVING A VOLATILE CONTENT BETWEN ABOUT 14 AND ABOUT 22% BY WEIGHT, THE MAJOR PORTION OF THE PARTICLES IN SAID MIXTURE PASSING A 1/4" SCREEN FORMING A DEEP BED OF SAID MIXTURE IN A NORROW VERTICAL COKING ZONE AND COKING THE MIXTURE BY INDIRECT HEAT AT A TEMPURATURE BETWEN ABOUT 1800 TO 2200* F.
References Cited (Backward Citations)
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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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |