US2921060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene with a cerium acetylacetonate-metal alkyl catalyst
Assignee: Sunoco Inc
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Filing: 1956-07-12
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Granted: 1960-01-12
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Expires: 1976-07-12
Abstract
No abstract record available.
Inventors
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
PROCESS FOR POLYMERIZING ETHYLENE WHICH COMPRISES INTRODUCING, UNDER POLYMERIZING CONDITIONS, ETHYLENE INTO A REACTION MEDIUM PREPARED BY ADMIXING A LIQUID SUBSTANTIALLY INERT ORGANIC REACTION MEDIUM, CERIUM ACETYLACETONATE, AND A METAL ALKYL WHEREIN THE METAL IS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, MAGNESIUM, LITHIUM, LEAD AND ZINC
Claim 2
Dependent Claim
47 words
PROCESS FOR POLYMERIZING ETHYLENE WHICH COMPRISES INTRODUCING, UNDER POLYMERIZING CONDITIONS, ETHYLENE INTO A REACTION MEDIUM PREPARED BY ADMIXING A LIQUID SUBSTANTIALLY INERT ORGANIC REACTION MEDIUM, CERIUM ACETYLACETONATE, AND A METAL ALKYL WHEREIN THE METAL IS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, MAGNESIUM, LITHIUM, LEAD AND ZINC
References Cited (Backward Citations)
BE533362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |