Patent US3168504A successfully refreshed from Google Patents.
US3168504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerization of olefins
Assignee: Standard Oil Co
•
Filing: 1958-03-27
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Granted: 1965-02-02
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Expires: 1978-03-27
Abstract
No abstract record available.
Inventors
- 👤 Leon B Gordon
- 👤 Jr Truman P Moote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:14
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A PROCESS FOR THE POLYMERIZATION OF OLEFIN HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES CONTACTING A FEED COMPRISING PREDOMINANTLY AN OLEFINIC HYDROCARBON HAVING FROM 2 TO 3 CARBON ATOMS PER MOLECULE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF VANADIUM PENTOXIDE, A SILICON TETRAHALIDE AND A TRIALKYL ALUMINUM COMPOUND, THE AMOUNT OF SAID CATALYST BEING IN THE RANGE OF ABOUT 0.01 TOABOUT 10 WEIGHT PERCENT BASED ON THE OLEFINS IN SAID FEED.
Claim 2
Dependent Claim
72 words
IN A PROCESS FOR THE POLYMERIZATION OF OLEFIN HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES CONTACTING A FEED COMPRISING PREDOMINANTLY AN OLEFINIC HYDROCARBON HAVING FROM 2 TO 3 CARBON ATOMS PER MOLECULE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF VANADIUM PENTOXIDE, A SILICON TETRAHALIDE AND A TRIALKYL ALUMINUM COMPOUND, THE AMOUNT OF SAID CATALYST BEING IN THE RANGE OF ABOUT 0.01 TOABOUT 10 WEIGHT PERCENT BASED ON THE OLEFINS IN SAID FEED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |