Patent US2817411A successfully refreshed from Google Patents.
US2817411A
Expired / Lapsed
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Process of and apparatus for separating tars from gas mixtures
Assignee: Wulff Process Co
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Filing: 1955-01-21
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Granted: 1957-12-24
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Expires: 1975-01-21
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Coberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:22
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
IN A PROCESS FOR REMOVING TAR FROM A HOT GASEOUS MIXTURE OF HYDROCARBONS, TAR, AND STEAM, THE STEPS OF: INJECTING INTO A FLOWING STREAM OF SAID MIXTURE A HOT LIQUID CONTAINING A SOLVENT FOR THE TAR; PASSING SAID MIXTURE AND SAID LIQUID INTO A FIRST ZONE MAINTAINED AT SUBATMOSPHERIC PRESSURE AND THEREIN REMOVING FROM SAID MIXTURE A SUBSTANTIAL PORTION OF SAID TAR AND SAID LIQUID HAVING TAR IN SOLUTION THEREIN; CONVEYING THE BALANCE OF SAID MIXTURE INTO A SECOND ZONE MAINTAINED AT SUBATMOSPHERIC TEMPERATURE AND THEREIN SCRUBBING THE SAME WITH A COLD LIQUID.
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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |