Patent US2819796A successfully refreshed from Google Patents.
Patent US2592375A successfully refreshed from Google Patents.
Patent US3010893A successfully refreshed from Google Patents.
US3010893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing finely divided solid particles from low temperature carbonization tars
Assignee: Consolidation Coal Co
•
Filing: 1958-12-22
•
Granted: 1961-11-28
•
Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Metro D Kulik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:42
CPC Classifications
C; C10; C10C; C10C1/00; C10C1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF PROCESSING A LOW-TEMPERATURE CARBONIZATION TAR CONTAINING FINELY DIVIDED PARTICLES OF CARBONACEOUS SOLIDS DIFFICULTY REMOVABLE THEREFROM, WHICH COMPRISES DISTILLING SAID PARTICLE-CONTAINING LOW-TEMPERATURE CARBONIZATION TAR TO FORM A SOLIDS-FREE DISTILLATE FRACTION HAVING A 95 PERCENT BOILING TEMPERATURE RANGE OF 300 TO 450*C. AND A PITCH RESIDUE CONTAINING SAID PARTICLES, AGITATING THE SOLIDS-LADEN PITCH RESIDUE WITH AN AGGLOMERATING PITCH-SOLVENT SELECTED FROM THE CLASS CONSISTING OF (1) A PREDOMINANTLY NON-AROMATIC LOW TEMPERATURE CARBONIZATION TAR DISTILLATE FRACTION CONTAINING AT LEAST 2 PERCENT BY VOLUME OF TAR ACIDS AND (2) A HYDROCARBNON SOLVENT HAVING A KAURI-BUTANOL VALUE BETWEEN ABOUT 65 AND 75 TO FORM A PITCH SOLUTION CONTAINING PARTICULATE AGGLOMERATES WITH A MINOR AMOUNT OF UNDISSOLVED PITCH, AND SEPARATING THE RESULTING AGGLOMERATES FROM THE SOLIDSFREE PITCH SOLUTION.
Claim 2
Independent Claim
124 words
THE METHOD OF PROCESSING A LOW-TEMPERATURE CARBONIZATION TAR CONTAINING FINELY DIVIDED PARTICLES OF CARBONACEOUS SOLIDS DIFFICULTY REMOVABLE THEREFROM, WHICH COMPRISES DISTILLING SAID PARTICLE-CONTAINING LOW-TEMPERATURE CARBONIZATION TAR TO FORM A SOLIDS-FREE DISTILLATE FRACTION HAVING A 95 PERCENT BOILING TEMPERATURE RANGE OF 300 TO 450*C. AND A PITCH RESIDUE CONTAINING SAID PARTICLES, AGITATING THE SOLIDS-LADEN PITCH RESIDUE WITH AN AGGLOMERATING PITCH-SOLVENT SELECTED FROM THE CLASS CONSISTING OF (1) A PREDOMINANTLY NON-AROMATIC LOW TEMPERATURE CARBONIZATION TAR DISTILLATE FRACTION CONTAINING AT LEAST 2 PERCENT BY VOLUME OF TAR ACIDS AND (2) A HYDROCARBNON SOLVENT HAVING A KAURI-BUTANOL VALUE BETWEEN ABOUT 65 AND 75 TO FORM A PITCH SOLUTION CONTAINING PARTICULATE AGGLOMERATES WITH A MINOR AMOUNT OF UNDISSOLVED PITCH, AND SEPARATING THE RESULTING AGGLOMERATES FROM THE SOLIDSFREE PITCH SOLUTION.
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) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |