Patent US3201488A successfully refreshed from Google Patents.
US3201488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for non-catalytic reaction
Assignee: Phillips Petroleum Co
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Filing: 1961-12-22
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Granted: 1965-08-17
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Expires: 1981-12-22
Abstract
No abstract record available.
Inventors
- 👤 Fred T Sherk
- 👤 Rolland E Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:58
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/16; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/0015; B01J2219/00155; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/926; Y10S585/949; Y10S585/955
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A THERMAL, NON-CATALYTIC DEALKYLATION PROCESS COMPRISING THE STEPS OF PASSING A SOLE FEED STREAM COMPRISING AN ALKYLATED AROMATIC HYDROCARBON INTO A FIRST CENTRAL, GENERALLY CYLINDRICAL ZONE THROUGH A FIRST END THEREOF, CIRCULATING SAID HYDROCARBON THROUGH SAID FIRST ZONE AND FROM A SECOND END THEREOF INTO A SECOND ZONE COMPRISING AN UNOBSTRUCTED ANNULAR ZONE SURROUNDING SAID FIRST ZONE AND IN OPEN COMMUNICATION THEREWITH AT SAID FIRST AND SECOND ENDS, UTILIZING KINETIC ENERGY OF THE FLOW OF SAID FEED STREAM ENTERING SAID FIRST ZONE TO RECIRCULATE A PORTION OF SAID HYDROCARBON DIRECTLY FROM SAID SECOND ZONE INTO SAID FIRST END OF SAID FIRST ZONE, SUBJECTING SAID HYDROCARBON TO DEALKYLATION CONDITIONS OF TEMPERATURE AND PRESSURE, AND REMOVING A SINGLE EFFLUENT STREAM COMPRISING A DEALKYLATED COMPONENT, SAID EFFLUENT STREAM BEING REMOVED FROM SAID SECOND ZONE.
Claim 2
Dependent Claim
131 words
A THERMAL, NON-CATALYTIC DEALKYLATION PROCESS COMPRISING THE STEPS OF PASSING A SOLE FEED STREAM COMPRISING AN ALKYLATED AROMATIC HYDROCARBON INTO A FIRST CENTRAL, GENERALLY CYLINDRICAL ZONE THROUGH A FIRST END THEREOF, CIRCULATING SAID HYDROCARBON THROUGH SAID FIRST ZONE AND FROM A SECOND END THEREOF INTO A SECOND ZONE COMPRISING AN UNOBSTRUCTED ANNULAR ZONE SURROUNDING SAID FIRST ZONE AND IN OPEN COMMUNICATION THEREWITH AT SAID FIRST AND SECOND ENDS, UTILIZING KINETIC ENERGY OF THE FLOW OF SAID FEED STREAM ENTERING SAID FIRST ZONE TO RECIRCULATE A PORTION OF SAID HYDROCARBON DIRECTLY FROM SAID SECOND ZONE INTO SAID FIRST END OF SAID FIRST ZONE, SUBJECTING SAID HYDROCARBON TO DEALKYLATION CONDITIONS OF TEMPERATURE AND PRESSURE, AND REMOVING A SINGLE EFFLUENT STREAM COMPRISING A DEALKYLATED COMPONENT, SAID EFFLUENT STREAM BEING REMOVED FROM SAID SECOND ZONE.
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |