US2921971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and catalyst for the poly-merization of olefins
Assignee: Phillips Petroleum Co
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Filing: 1956-03-14
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Granted: 1960-01-19
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Expires: 1976-03-14
Abstract
No abstract record available.
Inventors
- 👤 Vernon C F Holm
- 👤 Grant C Bailey
- 👤 Clark Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:32
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR THE POLYMERIZATION OF OLEFINS COMPRISING INTRODUCING SAID OLEFINS INTO A REACTION ZONE UNDER POLYMERIZATION CONDITIONS, AND CATALYZING SAID POLYMERIZATION BY CONTACTING SAID OLEFINS WITH A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF SILICA, ALUMINA, AND NICKEL OXIDE, SAID CATALYST COMPONENTS HAVING BEEN COPRECIPITATED FROM SOLUTION AND ACTIVATED BY HEATING IN A NON-REDUCING ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF 300 TO 700*C.
Claim 2
Dependent Claim
64 words
A PROCESS FOR THE POLYMERIZATION OF OLEFINS COMPRISING INTRODUCING SAID OLEFINS INTO A REACTION ZONE UNDER POLYMERIZATION CONDITIONS, AND CATALYZING SAID POLYMERIZATION BY CONTACTING SAID OLEFINS WITH A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF SILICA, ALUMINA, AND NICKEL OXIDE, SAID CATALYST COMPONENTS HAVING BEEN COPRECIPITATED FROM SOLUTION AND ACTIVATED BY HEATING IN A NON-REDUCING ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF 300 TO 700*C.
References Cited (Backward Citations)
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Cited
US1391666A
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US2040233A
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US2606940A
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US2645620A
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US2658875A
Cited
US2713044A
Cited
US2741602A
Cited
US2700663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |