US2943066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization catalyst
Assignee: EIDP Inc
•
Filing: 1956-05-08
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Granted: 1960-06-28
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Expires: 1976-05-08
Abstract
No abstract record available.
Inventors
- 👤 Arnold Herrick Ransom
- 👤 Foster Robert Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:31
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/066; B01J21/063; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A CATALYST COMPOSITION USEFUL IN THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED HYDROCARBONS CONSISTING ESSENTIALLY OF THE PRODUCT FORMED BY EXTENDING ON ALUMINA A METAL OXIDE WHEREIN THE SAID METAL IS AN ELEMENT OF GROUP IVB OF THE PERIODIC TABLE, AND THEREAFTER CONTACTING SAID METAL OXIDE EXTENDED ON ALUMINA WITH HYDROGEN AT A TEMPERATURE OF 500* TO 1000*C.
Claim 2
Dependent Claim
56 words
A CATALYST COMPOSITION USEFUL IN THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED HYDROCARBONS CONSISTING ESSENTIALLY OF THE PRODUCT FORMED BY EXTENDING ON ALUMINA A METAL OXIDE WHEREIN THE SAID METAL IS AN ELEMENT OF GROUP IVB OF THE PERIODIC TABLE, AND THEREAFTER CONTACTING SAID METAL OXIDE EXTENDED ON ALUMINA WITH HYDROGEN AT A TEMPERATURE OF 500* TO 1000*C.
References Cited (Backward Citations)
US2354892A
Cited
US2273338A
Cited
US2331292A
Cited
US2436256A
Cited
US2694049A
Cited
US2605238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |