Patent US2691647A successfully refreshed from Google Patents.
US2691647A
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Conversion of ethylene and/or propylene to solid polymers in the presence of group 6a metal oxides and alkali metals
Assignee: Standard Oil Co
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Filing: 1952-12-06
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Granted: 1954-10-12
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Expires: 1972-12-06
Abstract
No abstract record available.
Inventors
- 👤 Field Edmund
- 👤 Feller Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25; Y10S585/00; Y10S585/929; Y10S585/946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID HYDROCARBON MATERIAL, THE STEPS WHICH COMPRISES CONTACTING A NORMALLY GASEOUS OLEFIN SELECTED FROM THE CLASS CONSISTING OF ETHYLENE, PROPYLENE AND MIXTURES CONTAINING ETHYLENE AND PROPYLENE WITH AN ALKALI METAL AND AN OXIDE OF A METAL OF GROUP 6A OF THE MENDELEAF PERIODIC TABLE AT A REACTION TEMPERATURE BETWEEN ABOUT 75* C. AND ABOUT 325* C., AND SEPARATING A NORSOLID HYDROCARBON MATERIAL THUS PRODUCED.
Claim 2
Dependent Claim
73 words
IN A PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID HYDROCARBON MATERIAL, THE STEPS WHICH COMPRISES CONTACTING A NORMALLY GASEOUS OLEFIN SELECTED FROM THE CLASS CONSISTING OF ETHYLENE, PROPYLENE AND MIXTURES CONTAINING ETHYLENE AND PROPYLENE WITH AN ALKALI METAL AND AN OXIDE OF A METAL OF GROUP 6A OF THE MENDELEAF PERIODIC TABLE AT A REACTION TEMPERATURE BETWEEN ABOUT 75* C. AND ABOUT 325* C., AND SEPARATING A NORSOLID HYDROCARBON MATERIAL THUS PRODUCED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |