Patent US3027306A successfully refreshed from Google Patents.
US3027306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing briquettes from low-grade coal
Assignee: Individual
•
Filing: 1957-03-14
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Granted: 1962-03-27
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Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Muschenborn Walter
- 👤 Notzold Erich
- 👤 Schinzel Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:25
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/02; C10B; C10B53/00; C10B53/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METHOD FOR PRODUCING BLOCK COKE FROM LOW GRADE COAL-CONTAINING MATERIAL COMPRISING DISINTEGRATING SAID MATERIAL BY COKING, SUBJECTING SAID DISINTEGRATED MATERIAL TO A WET SEPARATION PROCESS TO SEPARATE A LOW-ASH, COKERICH CONCENTRATE THEREFROM, BRIQUETTING SAID CONCENTRATE, AND COKING SAID BRIQUETTE TO PRODUCE BLOCK COKE.
Claim 2
Independent Claim
44 words
A METHOD FOR PRODUCING BLOCK COKE FROM LOW GRADE COAL-CONTAINING MATERIAL COMPRISING DISINTEGRATING SAID MATERIAL BY COKING, SUBJECTING SAID DISINTEGRATED MATERIAL TO A WET SEPARATION PROCESS TO SEPARATE A LOW-ASH, COKERICH CONCENTRATE THEREFROM, BRIQUETTING SAID CONCENTRATE, AND COKING SAID BRIQUETTE TO PRODUCE BLOCK COKE.
References Cited (Backward Citations)
US1334170A
Cited
US1466377A
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US1772053A
Cited
US2636688A
Cited
US2661326A
Cited
US2803587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |