Patent US2965624A successfully refreshed from Google Patents.
US2965624A
Expired / Lapsed
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Carbon-alkali metal compounds as polymerization catalyst
Assignee: Phillips Petroleum Co
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Filing: 1957-11-21
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Granted: 1960-12-20
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Expires: 1977-11-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:12
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE CATALYTIC POLYMERIZATION OF CONJUGATED DIENES OF 4 TO 12 CARBON ATOMS UNDER POLYMERIZING CONDITIONS, THE IMPROVEMENT COMPRISING CARRYING OUT SAID POLYMERIZATION IN THE PRESENCE OF THE REACTION PRODUCT OF CARBON HAVING A LAMELLAR STRUCTURE AND AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, RUBIDIUM, AND CESIUM AS CATALYST COMPONENT.
Claim 2
Dependent Claim
54 words
IN THE CATALYTIC POLYMERIZATION OF CONJUGATED DIENES OF 4 TO 12 CARBON ATOMS UNDER POLYMERIZING CONDITIONS, THE IMPROVEMENT COMPRISING CARRYING OUT SAID POLYMERIZATION IN THE PRESENCE OF THE REACTION PRODUCT OF CARBON HAVING A LAMELLAR STRUCTURE AND AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, RUBIDIUM, AND CESIUM AS CATALYST COMPONENT.
References Cited (Backward Citations)
US2919266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |