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Patent US2649405A successfully refreshed from Google Patents.
US2649405A
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Method for coke-oven by-product recovery
Assignee: United Engineers and Constructors Inc
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Filing: 1950-09-19
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Granted: 1953-08-18
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Expires: 1970-09-19
Abstract
No abstract record available.
Inventors
- 👤 Gerald L Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:44
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; C10K1/18; C10K1/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A PROCESS FOR THE RECOVERY OF BY-PRODUCTS FROM HOT COKE OVEN GASES, A COMBINATION OF STEPS WHICH COMPRISES REMOVING TAR FROM THE GASES, SUBSEQUENTLY COMPRESSING THE GASES, CONTACTING THE GASES AT A PRESSURE OF ABOVE ABOUT 30 P.S.I.G. WITH A SUBSTANTIALLY NAPHTHALENE AND LIGHT OIL FREE ABSORBER OIL HAVING AN INITIAL POINT ABOVE ABOUT 225* C. AND AN END POINT NOT HIGHER THAN ABOUT 400* C. TO REMOVE LIGHT OILS THEREFROM WITH CONSEQUENT ENRICHMENT OF SAID ABSORBER OIL AND DISTILLING AT LEAST A PORTION OF THE LIGHT OIL RICH ABSORBER OIL TO SEPARATE LIGHT OILS THEREFROM, SAID DISTILLATION BEING CONDUCTED SOLELY BY INDIRECTLY HEATING SAID LIGHT OIL RICH ABSORBER OIL.
Claim 2
Dependent Claim
111 words
IN A PROCESS FOR THE RECOVERY OF BY-PRODUCTS FROM HOT COKE OVEN GASES, A COMBINATION OF STEPS WHICH COMPRISES REMOVING TAR FROM THE GASES, SUBSEQUENTLY COMPRESSING THE GASES, CONTACTING THE GASES AT A PRESSURE OF ABOVE ABOUT 30 P.S.I.G. WITH A SUBSTANTIALLY NAPHTHALENE AND LIGHT OIL FREE ABSORBER OIL HAVING AN INITIAL POINT ABOVE ABOUT 225* C. AND AN END POINT NOT HIGHER THAN ABOUT 400* C. TO REMOVE LIGHT OILS THEREFROM WITH CONSEQUENT ENRICHMENT OF SAID ABSORBER OIL AND DISTILLING AT LEAST A PORTION OF THE LIGHT OIL RICH ABSORBER OIL TO SEPARATE LIGHT OILS THEREFROM, SAID DISTILLATION BEING CONDUCTED SOLELY BY INDIRECTLY HEATING SAID LIGHT OIL RICH ABSORBER OIL.
References Cited (Backward Citations)
US1993344A
Cited
US2198743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |