US3027306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing briquettes from low-grade coal
Assignee: Individual
•
Filing: 1957-03-14
•
Granted: 1962-03-27
•
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 06:46
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
Cited
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 |