US2885337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal hydrogenation
Assignee: Hydrocarbon Research Inc
•
Filing: 1953-04-20
•
Granted: 1959-05-05
•
Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Percival C Keith
- 👤 Ringer Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN THE HYDROGENATION OF COAL INVOLVING THE TREATMENT WITH HYDROGEN OF SAID COAL IN POWDERED FROM WHILE SUSPENDING IN A HYDROCARBON OIL, THE IMPROVEMENT WHICH COMPRISES TERMINATING SAID TREATMENT WHEN A MAJOR PORTION NOT EXCEEDING ABOUT 85% OF THE CARBON CONTENT OF SAID COAL HAS BEEN CONVERTED TO LIQUID AND GASEOUS HYDROGENATION PRODUCTS, SUBJECTING A MIXTURE OF LIQUID HYDROGENERATION PRODUCTS AND SOLID RESIDUE RESULTING FROM SAID TREATMENT TO VAPOR-PHASE CRACKING BY INJECTING SAID MIXTURE INTO A FLUIDIZED MASS OF CONTACT MATERIAL MAINTAINED IN THE PRESENCE OF HYDROGEN AT ELEVATED TEMPERATURE AND PRESSURE WHEREBY SAID MIXTURE IS CONVERTED TO A SUBSTANTIALLY DRY CARBONACEOUS RESIDUE AND A GASIFORM STREAM RICH IN GASOLINE HYDROCARBON, AIND SEPARATING SAID GASIFORM STREAM FROM SAID DRY RESIDUE BY WITHDRAWING SAID GASIFORM STREAM FROM THE TOP OF SAID FLUIDIZED MASS.
Claim 2
Dependent Claim
132 words
IN THE HYDROGENATION OF COAL INVOLVING THE TREATMENT WITH HYDROGEN OF SAID COAL IN POWDERED FROM WHILE SUSPENDING IN A HYDROCARBON OIL, THE IMPROVEMENT WHICH COMPRISES TERMINATING SAID TREATMENT WHEN A MAJOR PORTION NOT EXCEEDING ABOUT 85% OF THE CARBON CONTENT OF SAID COAL HAS BEEN CONVERTED TO LIQUID AND GASEOUS HYDROGENATION PRODUCTS, SUBJECTING A MIXTURE OF LIQUID HYDROGENERATION PRODUCTS AND SOLID RESIDUE RESULTING FROM SAID TREATMENT TO VAPOR-PHASE CRACKING BY INJECTING SAID MIXTURE INTO A FLUIDIZED MASS OF CONTACT MATERIAL MAINTAINED IN THE PRESENCE OF HYDROGEN AT ELEVATED TEMPERATURE AND PRESSURE WHEREBY SAID MIXTURE IS CONVERTED TO A SUBSTANTIALLY DRY CARBONACEOUS RESIDUE AND A GASIFORM STREAM RICH IN GASOLINE HYDROCARBON, AIND SEPARATING SAID GASIFORM STREAM FROM SAID DRY RESIDUE BY WITHDRAWING SAID GASIFORM STREAM FROM THE TOP OF SAID FLUIDIZED MASS.
References Cited (Backward Citations)
US1984596A
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US2450753A
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US2658861A
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US2634286A
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US2756194A
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US2738311A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |