US3288876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon dealkylation process
Assignee: MOBILE Corp
•
Filing: 1963-06-27
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Granted: 1966-11-29
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 James D Hammond
- 👤 John W Payne
- 👤 Leo A Castler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:48
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/16; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/922; Y10S585/923; Y10S585/949; Y10S585/955
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR THE DEALKYLATION OF AN ALKYLAROMATIC HYDROCARBON WHICH COMPRISES INDIRECTLY PREHEATING A CHARGE COMPRISING HYDROGEN AND A NORMALLY LIQUID ALKYLAROMATIC HYDROCARBON FEED STOCK IN A RATIO OF AT LEAST 4000 S.C.F. OF HYDROGEN PER BARREL OF SAID FEED STOCK IN A PREHEATING ZONE WHEREIN THE MAXIMUM TEMPERATURE OF HEAT TRANSFER SURFACES IN CONTACT WITH SAID CHARGE IS MAINTAINED AT NOT MORE THAN ABOUT 65*F. ABOVE THE TEMPERATURE OF THE PROXIMATE PORTION OF THE CHARGE, INTRODUCING SAID PREHEATED CHARGE AT A TEMPERATURE BETWEEN ABOUT 1100
Claim 2
Dependent Claim
86 words
A PROCESS FOR THE DEALKYLATION OF AN ALKYLAROMATIC HYDROCARBON WHICH COMPRISES INDIRECTLY PREHEATING A CHARGE COMPRISING HYDROGEN AND A NORMALLY LIQUID ALKYLAROMATIC HYDROCARBON FEED STOCK IN A RATIO OF AT LEAST 4000 S.C.F. OF HYDROGEN PER BARREL OF SAID FEED STOCK IN A PREHEATING ZONE WHEREIN THE MAXIMUM TEMPERATURE OF HEAT TRANSFER SURFACES IN CONTACT WITH SAID CHARGE IS MAINTAINED AT NOT MORE THAN ABOUT 65*F. ABOVE THE TEMPERATURE OF THE PROXIMATE PORTION OF THE CHARGE, INTRODUCING SAID PREHEATED CHARGE AT A TEMPERATURE BETWEEN ABOUT 1100
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |