US2774716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing finely divided solids from raw low temperature carbonization coal tars
Assignee: Consolidation Coal Co
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Filing: 1954-01-29
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Granted: 1956-12-18
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Expires: 1974-01-29
Abstract
No abstract record available.
Inventors
- 👤 Metro D Kulik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:27
CPC Classifications
C; C10; C10C; C10C1/00; C10C1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR REMOVING SOLIDS CONSISTING ESSENTIALLY OF FINELY DIVIDED SOLID PARTICLES FROM THE CLASS OF COAL AND PARTIALLY DEVOLATILIZED COAL FROM A RAW LOW TEMPERATURE CARBONIZATION TAR WHICH COMPRISES MIXING THE RAW TAR WITH 0.5 TO 3.0 VOLUMES OF A PREDOMINANTLY NONAROMATIC LOW TEMPERATURE CARBONIZATION TAR DISTILLATE FRACTION CONTAINING AT LEAST 2 PERCENT BY VOLUME OF TAR ACIDS, SEPARATING REJECTED PITCH AND AGGLOMERATED SOLIDS, AND RECOVERING THE LIQUIDS.
Claim 2
Dependent Claim
69 words
A PROCESS FOR REMOVING SOLIDS CONSISTING ESSENTIALLY OF FINELY DIVIDED SOLID PARTICLES FROM THE CLASS OF COAL AND PARTIALLY DEVOLATILIZED COAL FROM A RAW LOW TEMPERATURE CARBONIZATION TAR WHICH COMPRISES MIXING THE RAW TAR WITH 0.5 TO 3.0 VOLUMES OF A PREDOMINANTLY NONAROMATIC LOW TEMPERATURE CARBONIZATION TAR DISTILLATE FRACTION CONTAINING AT LEAST 2 PERCENT BY VOLUME OF TAR ACIDS, SEPARATING REJECTED PITCH AND AGGLOMERATED SOLIDS, AND RECOVERING THE LIQUIDS.
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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |