US2658089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of a gem alkyl arylcyclohexane
Assignee: Universal Oil Products Co
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Filing: 1950-04-28
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Granted: 1953-11-03
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Expires: 1970-04-28
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 Pines Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:55
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS WHICH COMPRISES DEHYDROGENATING A 1-ALKYL-1-ARYLCYCLOHEXANE IN THE PRESENCE OF A DEHYDROGENATING CATALYST AND AN ACID-ACTING ISOMERIZING CATALYST TO FORM A FUSED RING POLYCYCLIC HYDROCARBON HAVING AT LEAST ONE RING MORE THAN SAID 1-AKLYL-1ARYLCYCLOHEXANE.
Claim 2
Dependent Claim
35 words
A PROCESS WHICH COMPRISES DEHYDROGENATING A 1-ALKYL-1-ARYLCYCLOHEXANE IN THE PRESENCE OF A DEHYDROGENATING CATALYST AND AN ACID-ACTING ISOMERIZING CATALYST TO FORM A FUSED RING POLYCYCLIC HYDROCARBON HAVING AT LEAST ONE RING MORE THAN SAID 1-AKLYL-1ARYLCYCLOHEXANE.
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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |