US3033844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process and catalysts
Assignee: Standard Oil Co
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Filing: 1958-07-28
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Granted: 1962-05-08
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Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Peters
- 👤 Bernard L Evering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:27
CPC Classifications
C; C08; C08F; C08F10/00; C08F2410/00; C08F2410/04; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS FOR THE POLYMERIZATION OF A 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 A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, IRON, COBALT, NICKEL AND ZIRCONIUM, THE MIXED OXIDE HAVING BEEN CALCINED AT A TEMPERATURE OF ABOUT 500*C. IN AIR FOR A PERIOD BETWEEN ABOUT 2 AND ABOUT 5 HOURS.
Claim 2
Dependent Claim
99 words
A PROCESS FOR THE POLYMERIZATION OF A 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 A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, IRON, COBALT, NICKEL AND ZIRCONIUM, THE MIXED OXIDE HAVING BEEN CALCINED AT A TEMPERATURE OF ABOUT 500*C. IN AIR FOR A PERIOD BETWEEN ABOUT 2 AND ABOUT 5 HOURS.
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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |