US3766286A
Expired / Lapsed
US
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Process for the isomerization of hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-06-25
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Granted: 1973-10-16
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Expires: 1991-06-25
Abstract
Abstract PARAFFINIC AND/OR ALKYL SUBSTITUTED AROMATIC HYDROCARBONS ARE ISOMERIZED WITH A CATALYST COMPRISING (A) A LEWIS ACID OF THE FORMULA MXN WHERE M IS SELECTED FROM GROUP IV-B, V OR VI-B OF THE PERIODIC TABLE, X IS A HALOGEN AND N VARIES FROM 3 TO 6, AND (B) A STRONG BRONSTED ACID COMPRISING FLUOROSULFURIC ACID, TRIFLUORO- METHANESULFONIC ACID, TRIFLUOROACETIC ACID OR MIXTURES THEREOF.
Inventors
- 👤 G Olah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:10
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/0225; B01J31/0227; B01J27/00; B01J27/06; B01J27/08; B01J31/04; B01J31/26; B01J31/36; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/271; C07C5/2718; C07C5/2721; C07C5/2727; B01J2231/00; B01J2231/50; B01J2231/52; B01J2540/00; B01J2540/20; B01J2540/22
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |