US2824790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Briquetting of coal
Assignee: Coal Industry Patents Ltd
•
Filing: 1954-08-02
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Granted: 1958-02-25
•
Expires: 1974-08-02
Abstract
No abstract record available.
Inventors
- 👤 Gregory Douglas Haig
- 👤 Kaye John Charles Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:28
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/02; C10L5/06; C10L5/10; C10L5/14; C10L5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A COAL BRIQUETTING PROCESS IN WHICH COAL TO BE BRIQUETTE IS HEATED TO ITS FUSING TEMPERATURE AFTER ADMIXTURE WITH LESS THAN 8% OF A FLUXING AGENT SELECTED FROM THE GROUP CONSISTING OF COAL TAR, COAL TAR BY-PRODUCTS, PITCH, BITUMEN, BY-PRODUCTS OF THE DISTILLATION OF PETROLEUM, AND TARS AND OILS RECOVERED FROM TEH DISTILLATION OF WOOD, AND THE HOT FUSED MIXTURE IS BRIQUETTED BY THE APPLICATION OF PRESSURE WHILST THE MIXTURE IS FUSED AND IS AT A TEMPERATURE EXCEEDING 250* C.AND BELOW THE DECOMPOSITION TEMPERATURE OF THE COAL USED.
Claim 2
Dependent Claim
88 words
A COAL BRIQUETTING PROCESS IN WHICH COAL TO BE BRIQUETTE IS HEATED TO ITS FUSING TEMPERATURE AFTER ADMIXTURE WITH LESS THAN 8% OF A FLUXING AGENT SELECTED FROM THE GROUP CONSISTING OF COAL TAR, COAL TAR BY-PRODUCTS, PITCH, BITUMEN, BY-PRODUCTS OF THE DISTILLATION OF PETROLEUM, AND TARS AND OILS RECOVERED FROM TEH DISTILLATION OF WOOD, AND THE HOT FUSED MIXTURE IS BRIQUETTED BY THE APPLICATION OF PRESSURE WHILST THE MIXTURE IS FUSED AND IS AT A TEMPERATURE EXCEEDING 250* C.AND BELOW THE DECOMPOSITION TEMPERATURE OF THE COAL USED.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
US2105832A
Cited
US2466435A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |