US2964575A
Expired / Lapsed
US
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Cycloolefin production using cycloaliphatic diene catalyst activators
Assignee: Cities Service Research and Development Co
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Filing: 1959-04-02
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Granted: 1960-12-13
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Expires: 1979-04-02
Abstract
No abstract record available.
Inventors
- 👤 Antonio A Sckul
- 👤 Jr Henry G Sellers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1895; B01J31/02; B01J31/1845; B01J31/185; B01J31/20; B01J31/24; C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/324; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847; C07C2531/00; C07C2531/16; C07C2531/20; C07C2531/22; C07C2601/00; C07C2601/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
IN A PROCESS FOR THE PRODUCTION OF A CYCLOOLEFINIC COMPOUND CONTAINING AT LEAST EIGHT CARBON ATOMS IN THE RING BY CONTACTING AN OPEN CHAIN CONJUGATED DIOLEFIN WITH A NICKEL CARBONYL CATALYST IN THE PRESENCE OF A SOLVENT AND AT A TEMPERATURE BETWEEN ABOUT 90* AND 150* C., THE IMPROVEMENT COMPRISING THE STEP OF INTRODUCING INTO THE REACTION ZONE A CYCLOALIPHATIC HYDROCARBON DIENE AS CATALYST ACTIVATOR.
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |