US2802814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymerization with catalyst of nickel oxide on carbon plus alkaline earth metal
Assignee: Standard Oil Co
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Filing: 1954-03-30
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Granted: 1957-08-13
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Expires: 1974-03-30
Abstract
No abstract record available.
Inventors
- 👤 Feller Morris
- 👤 Field Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:57
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR THE PREPARATION OF A NORMALLY SOLID ETHYLENE POLYMER, WHICH PROCESS COMPRISES CONTACTING ETHYLENE WITH AN ALKALINE EARTH METAL AND A CATALYST COMPRISING ESSENTIALLY A MINOR PROPORTION OF NICKEL OXIDE SUPPORTED UPON A MAJOR PROPORTION OF AN ACTIVE CARBON AT A TEMPERATURE BETWEEN ABOUT 25*C. AND ABOUT 250* C., AND SEPARATING A NORMALLY SOLIDETHYLENE POLYMER THUS PRODUCED.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE PREPARATION OF A NORMALLY SOLID ETHYLENE POLYMER, WHICH PROCESS COMPRISES CONTACTING ETHYLENE WITH AN ALKALINE EARTH METAL AND A CATALYST COMPRISING ESSENTIALLY A MINOR PROPORTION OF NICKEL OXIDE SUPPORTED UPON A MAJOR PROPORTION OF AN ACTIVE CARBON AT A TEMPERATURE BETWEEN ABOUT 25*C. AND ABOUT 250* C., AND SEPARATING A NORMALLY SOLIDETHYLENE POLYMER THUS PRODUCED.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |