US2840551A
Expired / Lapsed
US
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Olefin polymerization with catalysts prepared from boron compounds and transition metal compounds
Assignee: Standard Oil Co
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Filing: 1955-08-18
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Granted: 1958-06-24
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Expires: 1975-08-18
Abstract
No abstract record available.
Inventors
- 👤 Field Edmund
- 👤 Herbert N Friedlander
- 👤 Omar O Juveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:10
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR THE POLYMERIZATION OF AN OLEFINIC HYDROCARBON, WWHICH PROCESS COMPISES CNTACTING SAID TYDROCARBON UNDER POLYMERIZATION CONDITIONS WITH A CATALYST PREPARED BY MIXING A BORON COMPOUND SELECTED FROM THE CLASS CONSISTING OF HYDRIDE AND HYDROCARBON DERIVATIES OF BORON WITH A POLYVALENT METAL SALT OF A METAL SELECTED FROM GROUPS 4A 5A, AN 8 OF THE MENDELEEFF PERIODIC TABLE, AND RECOEVRING A POLYMER THUS PRODUCED.
Claim 2
Dependent Claim
65 words
A PROCESS FOR THE POLYMERIZATION OF AN OLEFINIC HYDROCARBON, WWHICH PROCESS COMPISES CNTACTING SAID TYDROCARBON UNDER POLYMERIZATION CONDITIONS WITH A CATALYST PREPARED BY MIXING A BORON COMPOUND SELECTED FROM THE CLASS CONSISTING OF HYDRIDE AND HYDROCARBON DERIVATIES OF BORON WITH A POLYVALENT METAL SALT OF A METAL SELECTED FROM GROUPS 4A 5A, AN 8 OF THE MENDELEEFF PERIODIC TABLE, AND RECOEVRING A POLYMER THUS PRODUCED.
References Cited (Backward Citations)
US2721189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |