Patent US3145238A successfully refreshed from Google Patents.
US3145238A
Expired / Lapsed
US
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Hydrodealkylation of special feed stocks
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1961-06-19
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Granted: 1964-08-18
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Kestner William Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:11
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/06; C10G2400/00; C10G2400/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE COMBINED STEAM CRACKKNG AND HYDRODEALKYLATION PROCESS WHICH COMPRISES STEAM CRACKING AT HIGH CONVERSIONS A PRODUCT STREAM FROM CATALYTIC CRACKING BOILING IN THE RANGE OF 300 TO 850*F., DISTILLING THE REACTION AROMATIC CONCENTRATE FRACTION BOILING WITHIN THE RANGE OF 160 TO 600*F., HYDRODEALKYLATING THE SAID AROMATIC CONCENTRATE FRACTION AT TEMPERATURES IN THE RANGE OF 1100 TO 1600*F., AND SEPARATING A DEALKYLATED AROMATIC FROM THE REACTION PRODUCTS FROM THE SAID HYDRODEALKYLATION.
Claim 2
Dependent Claim
70 words
THE COMBINED STEAM CRACKKNG AND HYDRODEALKYLATION PROCESS WHICH COMPRISES STEAM CRACKING AT HIGH CONVERSIONS A PRODUCT STREAM FROM CATALYTIC CRACKING BOILING IN THE RANGE OF 300 TO 850*F., DISTILLING THE REACTION AROMATIC CONCENTRATE FRACTION BOILING WITHIN THE RANGE OF 160 TO 600*F., HYDRODEALKYLATING THE SAID AROMATIC CONCENTRATE FRACTION AT TEMPERATURES IN THE RANGE OF 1100 TO 1600*F., AND SEPARATING A DEALKYLATED AROMATIC FROM THE REACTION PRODUCTS FROM THE SAID HYDRODEALKYLATION.
References Cited (Backward Citations)
US2380279A
Cited
US2431515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |