US2810770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of long chain alkyl substituted aromatic hydrocarbons
Assignee: Sinclair Refining Co
•
Filing: 1954-04-01
•
Granted: 1957-10-22
•
Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 Robert A Sanford
- 👤 Bernard S Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:55
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2527/1213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR THE PRODUCTION OF LONG CHAIN TERTIARY ALKYL SUBSTITUTED MONOCYCLIC AROMATIC HYDROCARBONS IN WHICH THE LONG CHAIN ALKYL GROUP CONTAINS FROM 8 TO 20 CARBON ATOMS, WHICH COMPRISES REACTING A MONOCYCLIC AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE AND SHORT CHAIN ALKYL SUBSTITUTED BENZENES IN WHICH THE SHORT CHAIN ALKYL GROUP CONTAINS UP TO FOUR CARBON ATOMS WITH POLYMERS OF ISOBUTYLENE CONTAINING FROM 8 TO 20 CARBON ATOMS IN THE PRESENCE OF A CATALYST COMPRISING HYDROGEN FLUORIDE WHILE CONTROLLING THE TEMPERATURE AT ABOUT -65 TO -20*C.
Claim 2
Dependent Claim
90 words
A PROCESS FOR THE PRODUCTION OF LONG CHAIN TERTIARY ALKYL SUBSTITUTED MONOCYCLIC AROMATIC HYDROCARBONS IN WHICH THE LONG CHAIN ALKYL GROUP CONTAINS FROM 8 TO 20 CARBON ATOMS, WHICH COMPRISES REACTING A MONOCYCLIC AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BENZENE AND SHORT CHAIN ALKYL SUBSTITUTED BENZENES IN WHICH THE SHORT CHAIN ALKYL GROUP CONTAINS UP TO FOUR CARBON ATOMS WITH POLYMERS OF ISOBUTYLENE CONTAINING FROM 8 TO 20 CARBON ATOMS IN THE PRESENCE OF A CATALYST COMPRISING HYDROGEN FLUORIDE WHILE CONTROLLING THE TEMPERATURE AT ABOUT -65 TO -20*C.
References Cited (Backward Citations)
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US2437356A
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US2456119A
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US2477383A
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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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |