US2726231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of solid polymers from ethylene and the like in the presence of alkali metal hydrides and group 6a metal oxide catalysts
Assignee: Standard Oil Co
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Filing: 1952-12-06
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Granted: 1955-12-06
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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 03:25
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID HYDROCARBON MATERIAL, THE STEPS WHICH COMPRISES CONTACTING A NORMALLY GASEOUS OLEFIN CONTAINING 2 TO 3 CARBON ATOMS, INCLUSIVE, IN THE MOLECULE WITH AN ALKALI METAL HYDRIDE AND OXIDE OF A METAL OF GROUP 6A OF THE MENDELEEF PERIODIC TABLE AT A REACTION TEMPERATURE BETWEEN ABOUT 75* C. AND ABOUT 325* C., AND SEPARATING A NORMALLY SOLID HYDROCARBON MATERIAL THUS PRODUCED.
Claim 2
Dependent Claim
70 words
IN A PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID HYDROCARBON MATERIAL, THE STEPS WHICH COMPRISES CONTACTING A NORMALLY GASEOUS OLEFIN CONTAINING 2 TO 3 CARBON ATOMS, INCLUSIVE, IN THE MOLECULE WITH AN ALKALI METAL HYDRIDE AND OXIDE OF A METAL OF GROUP 6A OF THE MENDELEEF PERIODIC TABLE AT A REACTION TEMPERATURE BETWEEN ABOUT 75* C. AND ABOUT 325* C., AND SEPARATING A NORMALLY SOLID HYDROCARBON MATERIAL THUS PRODUCED.
References Cited (Backward Citations)
US2385609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |