US3110741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclohexane conversion to cyclohexene
Assignee: Sinclair Research Inc
•
Filing: 1958-04-25
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Granted: 1963-11-12
•
Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Seymour H Patinkin
- 👤 Sanford Robert Alois
- 👤 Robert R Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:18
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR THE PREPARATION OF CYCLOHEXENE WHICH COMPRISES REACTING IN THE VAPOR PHASE A MIXTURE CONSISTING ESSENTIALLY OF CYCLOHEXANE AND FREE SULFUR IN A REACTION ZONE AT A TEMPERATURE OF ABOUT 900 TO 1200*F., IN A CYCLOHEXANE TO SULFUR MOLAR RATIO OF ABOUT 1:1 TO 12:1 AND RECOVERING SUBSTANTIAL YIELDS OF CYCLOHEXENE WITHOUT EXCESSIVE AMOUNTS OF BENZENE.
Claim 2
Dependent Claim
58 words
A PROCESS FOR THE PREPARATION OF CYCLOHEXENE WHICH COMPRISES REACTING IN THE VAPOR PHASE A MIXTURE CONSISTING ESSENTIALLY OF CYCLOHEXANE AND FREE SULFUR IN A REACTION ZONE AT A TEMPERATURE OF ABOUT 900 TO 1200*F., IN A CYCLOHEXANE TO SULFUR MOLAR RATIO OF ABOUT 1:1 TO 12:1 AND RECOVERING SUBSTANTIAL YIELDS OF CYCLOHEXENE WITHOUT EXCESSIVE AMOUNTS OF BENZENE.
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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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |