Patent US3663186A successfully refreshed from Google Patents.
US3663186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing metallurgical coke
Assignee: Individual
•
Filing: 1970-01-27
•
Granted: 1972-05-16
•
Expires: 1990-01-27
Abstract
Abstract A method of manufacturing metallurgical coke, consisting in that poor-caking coal is ground, then molded at a temperature of 20*350* C., whereupon the coal briquettes are caked at 450*-600* C. under the pressure of vapor and gaseous products of the coal thermal decomposition, and are then calcined at 750*-950* C.
Inventors
- 👤 Platon Nesterovich Dzhaparidze
- 👤 Leonid Alexeevich Drakin
- 👤 Sergei Ivanovich Malyshev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:17
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A method as claimed in claim 1, wherein the pressure of the vapor and gaseous products is equal to 1 - 20 atm. gauge.
Claim 2
Dependent Claim
57 words
A method as claimed in claim 1, comprising effecting the molding on a cellulated conveyor transporter under the pressure of the vapor and gaseous products of coal thermal decomposition, the latter being equal to the pressure of said products during caking the briquettes, the duration of molding being determined by that of the caking of the briquettes.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 3, wherein prior to molding, the ground coal is pitched with the vapor and gaseous products of its thermal decomposition.
Claim 4
Dependent Claim
26 words
A method as claimed in claim 1, wherein prior to molding, the ground coal is pitched with the vapor and gaseous products of its thermal decomposition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |