US2529790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal and catalytic cracking of hydrocarbons
Assignee: Phillips Petroleum Co
•
Filing: 1947-12-30
•
Granted: 1950-11-14
•
Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Paul M Waddill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:49
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/14; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR THE CONVERSION OF HYDROCARBONS WHICH COMPRISES THERMALLY CRACKING A HYDROCARBON OIL, SEPARATING THE NON-VAPORIZED RESIDUE FROM THE THERMALLY CRACKED OIL, FLASHING A LIGHTER GAS OIL PORTION FROM SAID RESIDUE AND ADMIXING SAID PORTION IN LIQUID PHASE WITH TH HYDROCARBON OIL BEFORE SUBJECTING IT TO SAID THERMAL CRACKING, CATALYTICALLY CRACKING ALL OF THE NON-RESIDUAL PORTION OF THE THERMALLY CRACKED HYDROCARBONS IN A FIRST CATALYST ZONE, RECOVERING AN INTERMEDIATE HYDROCARBON FRACTION FROM THE CATALYTICALLY CRACKED HYDROCARBONS DIRECTLY PASSING SAID FRACTION TO ANOTHER CAYALYST ZONE AND THEREIN CRACKING SAID PORTION UNDER MORE SEVERE CONDITIONS OF TEMPERATURE THAN THOSE IN FIRST MENTIONED ZONE.
Claim 2
Dependent Claim
102 words
A PROCESS FOR THE CONVERSION OF HYDROCARBONS WHICH COMPRISES THERMALLY CRACKING A HYDROCARBON OIL, SEPARATING THE NON-VAPORIZED RESIDUE FROM THE THERMALLY CRACKED OIL, FLASHING A LIGHTER GAS OIL PORTION FROM SAID RESIDUE AND ADMIXING SAID PORTION IN LIQUID PHASE WITH TH HYDROCARBON OIL BEFORE SUBJECTING IT TO SAID THERMAL CRACKING, CATALYTICALLY CRACKING ALL OF THE NON-RESIDUAL PORTION OF THE THERMALLY CRACKED HYDROCARBONS IN A FIRST CATALYST ZONE, RECOVERING AN INTERMEDIATE HYDROCARBON FRACTION FROM THE CATALYTICALLY CRACKED HYDROCARBONS DIRECTLY PASSING SAID FRACTION TO ANOTHER CAYALYST ZONE AND THEREIN CRACKING SAID PORTION UNDER MORE SEVERE CONDITIONS OF TEMPERATURE THAN THOSE IN FIRST MENTIONED ZONE.
References Cited (Backward Citations)
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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) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |