US2678338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cycloalkadiene hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1950-10-28
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Granted: 1954-05-11
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Expires: 1970-10-28
Abstract
No abstract record available.
Inventors
- 👤 Carl B Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:20
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/207; C07C1/24; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; C07C2527/06; C07C2527/138; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR PRODUCING CYCLOHEXADIENE WHICH COMPRISES REACTING A MIXTURE OF A CYCLOHEXENONE AND A CYCLOHEXENOL AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 200* C. IN THE PRESENCE OF AN AQUEOUS SOLUTION OF AN ACID-ACTING CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND MAGNESIUM CHLORIDE AND RECOVERING THE RESULTANT CYCLOHEXADIENE.
Claim 2
Dependent Claim
54 words
A PROCESS FOR PRODUCING CYCLOHEXADIENE WHICH COMPRISES REACTING A MIXTURE OF A CYCLOHEXENONE AND A CYCLOHEXENOL AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 200* C. IN THE PRESENCE OF AN AQUEOUS SOLUTION OF AN ACID-ACTING CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID AND MAGNESIUM CHLORIDE AND RECOVERING THE RESULTANT CYCLOHEXADIENE.
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) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |