US2830103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl isomerization of nuclearly alkylsubstituted hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1956-11-02
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Granted: 1958-04-08
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Expires: 1976-11-02
Abstract
No abstract record available.
Inventors
- 👤 George L Hervert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2729; C07C5/2732; C07C5/274; C07C5/2748; C07C5/2751
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR PRODUCING A SECONDARY ALKYL-SUBSTITUTED AROMATIC HYDROCARBON WHICH COMPRISES SUBJECTING A TERTIARY ALKYL-SUBSTITUTED AROMATIC HYDROCARBON HAVING AT LEAST 5 CARBON ATOMS IN THE TERTIARY ALKYL SUBSTITUENT TO THE ACTION OF FROM ABOUT 0.1% TO ABOUT 25% BY WEIGHT OF A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES AND BROMIDES OF ALUMINUM AND ZIRCONIUM AT A TEMPERATURE OF FROM ABOUT 0* TO ABOUT 75* C. TO THEREBY CONVERT SAID TERTIARY ALKYL SUBSTITUENT TO A SECONDARY ALKYL RADICAL.
Claim 2
Dependent Claim
81 words
A PROCESS FOR PRODUCING A SECONDARY ALKYL-SUBSTITUTED AROMATIC HYDROCARBON WHICH COMPRISES SUBJECTING A TERTIARY ALKYL-SUBSTITUTED AROMATIC HYDROCARBON HAVING AT LEAST 5 CARBON ATOMS IN THE TERTIARY ALKYL SUBSTITUENT TO THE ACTION OF FROM ABOUT 0.1% TO ABOUT 25% BY WEIGHT OF A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES AND BROMIDES OF ALUMINUM AND ZIRCONIUM AT A TEMPERATURE OF FROM ABOUT 0* TO ABOUT 75* C. TO THEREBY CONVERT SAID TERTIARY ALKYL SUBSTITUENT TO A SECONDARY ALKYL RADICAL.
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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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |