Patent US2631982A successfully refreshed from Google Patents.
US2631982A
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US
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Process for treating tar
Assignee: Honeywell International Inc
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Filing: 1951-03-09
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Granted: 1953-03-17
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Expires: 1971-03-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Donegan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:56
CPC Classifications
D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/14; D01F9/32; D01F9/322; C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/318; C01B32/33; C10; C10C; C10C1/00; C10C1/18; D01F9/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE TREATMENT OF HEAVY HYDROCARBONS CONTAINING NATURALLY OCCURRING FINELY DIVIDED PARTICLES SUSPENDED THERIN SELECTED FROM THE GROUP CONSISTING OF COAL TAR, WATER-GAS TAR, OIL-GAS TAR AND THEIR PITCHES WHICH COMPRISES ADMIXING A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AROMATIC, NAPHTHENIC, AND PARAFFINIC HYDROCARBONS BOILING SUBSTANTIALLY WITHIN THE RANGE OF 125* F. TO 500* F., CARBON TETRACHLORIDE, AND ACETONE IN THE PROPORTION OF 0.15-0.75 VOL-
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE TREATMENT OF HEAVY HYDROCARBONS CONTAINING NATURALLY OCCURRING FINELY DIVIDED PARTICLES SUSPENDED THERIN SELECTED FROM THE GROUP CONSISTING OF COAL TAR, WATER-GAS TAR, OIL-GAS TAR AND THEIR PITCHES WHICH COMPRISES ADMIXING A SOLVENT SELECTED FROM THE GROUP CONSISTING OF AROMATIC, NAPHTHENIC, AND PARAFFINIC HYDROCARBONS BOILING SUBSTANTIALLY WITHIN THE RANGE OF 125* F. TO 500* F., CARBON TETRACHLORIDE, AND ACETONE IN THE PROPORTION OF 0.15-0.75 VOL-
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) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |