US2946778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process and catalysts
Assignee: Standard Oil Co
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Filing: 1958-07-14
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Granted: 1960-07-26
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Ke Bacon
- 👤 Herbert N Friedlander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:40
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR THE POLYMERIZATION OF 1-ALKENE, WHICH PROCESS COMPRISES EXPOSING SAID 1-ALKENE UNDER POLYMERIZATION CONDITIONS TO A CATALYST CONSISTING ESSENTIALLY OF A COMPOSITION FORMED FROM A HYDROCARBON ALUMINUM COMPOUND AND A PENTAVALENT OXIDE OF VANADIUM CONTAINING A MINOR PROPORTION, BETWEEN ABOUT 1 AND ABOUT 20 MOLE PERCENT BASED ON SAID OXIDE OF VANADIUM, OF AT LEAST ONE OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SILVER, STRONTIUM, BORON, THORIUM, TIN AND MAGANESE.
Claim 2
Dependent Claim
76 words
A PROCESS FOR THE POLYMERIZATION OF 1-ALKENE, WHICH PROCESS COMPRISES EXPOSING SAID 1-ALKENE UNDER POLYMERIZATION CONDITIONS TO A CATALYST CONSISTING ESSENTIALLY OF A COMPOSITION FORMED FROM A HYDROCARBON ALUMINUM COMPOUND AND A PENTAVALENT OXIDE OF VANADIUM CONTAINING A MINOR PROPORTION, BETWEEN ABOUT 1 AND ABOUT 20 MOLE PERCENT BASED ON SAID OXIDE OF VANADIUM, OF AT LEAST ONE OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SILVER, STRONTIUM, BORON, THORIUM, TIN AND MAGANESE.
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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |