US3026252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a carbonaceous product from low grade coal
Assignee: Individual
•
Filing: 1957-03-14
•
Granted: 1962-03-20
•
Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Muschenborn Walter
- 👤 Notzold Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:59
CPC Classifications
C; C10; C10L; C10L9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD FOR PRODUCING A CARABONACEOUS PRODUCT OF LOW ASH CONTENT FRO LOW GRADE COAL-CONTAINING MATERIAL HAVING A HIGH ASH CONTENT AND A HIGH PROPORTION OF VOLATILE MATTER COMPRISING DISINTEGRATING SAID MATERIAL BY COKING, AND SUBJECTING SAID DISINTEGRATED MATERIAL TO A WET SEPARATAION PROCESS TO OBTAIN A CARBONACEOUS CONCENTRATAE RELATIVELY LOW IN ASH CONTENT AND A SEPARATED ASHRICH COMPONENT.
Claim 2
Independent Claim
59 words
A METHOD FOR PRODUCING A CARABONACEOUS PRODUCT OF LOW ASH CONTENT FRO LOW GRADE COAL-CONTAINING MATERIAL HAVING A HIGH ASH CONTENT AND A HIGH PROPORTION OF VOLATILE MATTER COMPRISING DISINTEGRATING SAID MATERIAL BY COKING, AND SUBJECTING SAID DISINTEGRATED MATERIAL TO A WET SEPARATAION PROCESS TO OBTAIN A CARBONACEOUS CONCENTRATAE RELATIVELY LOW IN ASH CONTENT AND A SEPARATED ASHRICH COMPONENT.
References Cited (Backward Citations)
US1334170A
Cited
US1466377A
Cited
GB240799A
Cited
US1995603A
Cited
US2636688A
Cited
US2803587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |