US3250818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicyclooctene production
Assignee: Shell USA Inc
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Filing: 1964-05-18
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Granted: 1966-05-10
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Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Lawrence G Cannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:17
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS OF PRODUCING BICYCLO (3.30) OCT-2-ENES BY CONTACTING HYDROCARBON CYCLOOCTADIENE HAVING FROM 0 TO 6 HYDROCARBYL RING SUBSTITUENTS, SAID HYDROCARBYLS INDEPENDENTLY HAVING FROM 1 TO 10 CARBON ATOMS AND HAVING ONLY AROMATIC UNSATURATION, WITH SOLID, INORGANIC, ACIDIC CATALYST SELECTED FROM METALLIC HALIDES, ACIDIC OXIDES, SILICEOUS REFRACTORY OXIDES, HETEROPOLY ACIDS AND SALTS OF HETEROPOLY ACIDS, SAID CATALYST BEING SUBSTANTIALLY INSOLUBLE IN SAID CYCLOOCTADIENE, AT A TEMPERATURE FROM ABOUT 50*C. TO ABOUT 400*C. FOR A CONTACT TIME OF FROM ABOUT 0.01 MINUTE TO ABOUT 0.3 MINUTE.
Claim 2
Dependent Claim
85 words
THE PROCESS OF PRODUCING BICYCLO (3.30) OCT-2-ENES BY CONTACTING HYDROCARBON CYCLOOCTADIENE HAVING FROM 0 TO 6 HYDROCARBYL RING SUBSTITUENTS, SAID HYDROCARBYLS INDEPENDENTLY HAVING FROM 1 TO 10 CARBON ATOMS AND HAVING ONLY AROMATIC UNSATURATION, WITH SOLID, INORGANIC, ACIDIC CATALYST SELECTED FROM METALLIC HALIDES, ACIDIC OXIDES, SILICEOUS REFRACTORY OXIDES, HETEROPOLY ACIDS AND SALTS OF HETEROPOLY ACIDS, SAID CATALYST BEING SUBSTANTIALLY INSOLUBLE IN SAID CYCLOOCTADIENE, AT A TEMPERATURE FROM ABOUT 50*C. TO ABOUT 400*C. FOR A CONTACT TIME OF FROM ABOUT 0.01 MINUTE TO ABOUT 0.3 MINUTE.
References Cited (Backward Citations)
DE1167824B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |