US2615056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for isomerization of aromatic compounds
Assignee: Beazer East Inc
•
Filing: 1947-10-02
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Granted: 1952-10-21
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Expires: 1967-10-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Nickels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:36
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2729; C07C5/2732; C07C5/274
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A PROCESS FOR CATALYST ISOMERIZATION, THE STEPS OF BRINGING A PROCATALYSATE CONTAINING PREDOMINANTLY AN AROMATIC COMPOUND CONTAINING AT LEAST ONE SUBSTITUENT CAPABLE OF ATTACHMENT AT TWO OR MORE ISOMERICALLY DIFERENT POSITIONS ON THE AROMATIC NUCLEUS IN COMTACT WITH A CATALYST COMPRISING AN ALUMINUM SALT OF A FLUORINE ACID SELECTED FROM THE CLASS CONSISTING OF HYDROFLUORIC ACID PER SE AND HYDROFLUORIC ACID AND COMPLEX COMBINATION AS A WERNER CMPLEX AT A REACTIVE TEMPERATURE SUFFICIENT TO CHANGE THE ISOMER DISTRIBUTION IN SAID PROCATALYSATE.
Claim 2
Dependent Claim
82 words
IN A PROCESS FOR CATALYST ISOMERIZATION, THE STEPS OF BRINGING A PROCATALYSATE CONTAINING PREDOMINANTLY AN AROMATIC COMPOUND CONTAINING AT LEAST ONE SUBSTITUENT CAPABLE OF ATTACHMENT AT TWO OR MORE ISOMERICALLY DIFERENT POSITIONS ON THE AROMATIC NUCLEUS IN COMTACT WITH A CATALYST COMPRISING AN ALUMINUM SALT OF A FLUORINE ACID SELECTED FROM THE CLASS CONSISTING OF HYDROFLUORIC ACID PER SE AND HYDROFLUORIC ACID AND COMPLEX COMBINATION AS A WERNER CMPLEX AT A REACTIVE TEMPERATURE SUFFICIENT TO CHANGE THE ISOMER DISTRIBUTION IN SAID PROCATALYSATE.
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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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |