Patent US2943081A successfully refreshed from Google Patents.
US2943081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization and catalyst composition therefor
Assignee: EIDP Inc
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Filing: 1956-04-30
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Granted: 1960-06-28
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Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward George Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:55
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/063; B01J21/066; B01J23/00; B01J23/02; B01J23/04; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A CATALYST COMPOSITION USEFUL FOR THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED COMPOUNDS WHICH COMPRISES THE PRODUCTS OBTAINED BY EXTENDING ON ALUMINA A METAL OXIDE WHEREIN THE SAID METAL IS AN ELEMENT OF GROUP IVB OF THE PERIODIC TABLE, THERE BEING PRESENT NO COMPOUND OF A TRANSITION ELEMENT OF ANY GROUP OTHER THAN SAID GROUP IVB, AND THEREAFTER CONTACTING, AT A TEMPERATURE OF AT LEAST 300*C., SAID METAL OXIDE EXTENDED ON ALUMINA WITH THE VAPOR OF A METAL OF THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS OF ATOMIC NUMBERS 3 THROUGH 56.
Claim 2
Dependent Claim
93 words
A CATALYST COMPOSITION USEFUL FOR THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED COMPOUNDS WHICH COMPRISES THE PRODUCTS OBTAINED BY EXTENDING ON ALUMINA A METAL OXIDE WHEREIN THE SAID METAL IS AN ELEMENT OF GROUP IVB OF THE PERIODIC TABLE, THERE BEING PRESENT NO COMPOUND OF A TRANSITION ELEMENT OF ANY GROUP OTHER THAN SAID GROUP IVB, AND THEREAFTER CONTACTING, AT A TEMPERATURE OF AT LEAST 300*C., SAID METAL OXIDE EXTENDED ON ALUMINA WITH THE VAPOR OF A METAL OF THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS OF ATOMIC NUMBERS 3 THROUGH 56.
Claim 3
Dependent Claim
133 words
THE PROCESS OF POLYMERIZING AT LEAST ONE TERMINALLY UNSATURATED OLEFIN WHICH COMPRISES CONTACTING SAID TERMINALLY UNSATURATED OLEFINS WITH A CATALYST OBTAINED ON EXTENDING ON ALUMINA A METAL OXIDE, WHEREIN THE SAID METAL IS AN ELEMENT OF GROUP IVB OF THE PERIODIC TABLE, THERE BEING PRESENT NO COMPOUND OF A TRANSITION ELEMENT OF ANY GROUP OTHER THAN SAID GROUP IVB, SAID METAL OXIDE BEING EMPLOYED IN A CONCENTRATION OF 0.1 TO 20% BY WEIGHT OF SAID ALUMINA, AND THEREAFTER CONTACTING, AT A TEMPERATURE OF AT LEAST 300*C., SAID METAL OXIDE EXTENDED OF ALUMINA WITH THE VAPOR OF A METAL OF THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS OF ATOMIC NUMBER 3 THROUGH 56, SAID METAL BEING EMPLOYED IN A CONCENTRATION OF 1 TO 1000% BY WEIGHT OF THE SAID METAL OXIDE.
Claim 4
Dependent Claim
133 words
THE PROCESS OF POLYMERIZING AT LEAST ONE TERMINALLY UNSATURATED OLEFIN WHICH COMPRISES CONTACTING SAID TERMINALLY UNSATURATED OLEFINS WITH A CATALYST OBTAINED ON EXTENDING ON ALUMINA A METAL OXIDE, WHEREIN THE SAID METAL IS AN ELEMENT OF GROUP IVB OF THE PERIODIC TABLE, THERE BEING PRESENT NO COMPOUND OF A TRANSITION ELEMENT OF ANY GROUP OTHER THAN SAID GROUP IVB, SAID METAL OXIDE BEING EMPLOYED IN A CONCENTRATION OF 0.1 TO 20% BY WEIGHT OF SAID ALUMINA, AND THEREAFTER CONTACTING, AT A TEMPERATURE OF AT LEAST 300*C., SAID METAL OXIDE EXTENDED OF ALUMINA WITH THE VAPOR OF A METAL OF THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS OF ATOMIC NUMBER 3 THROUGH 56, SAID METAL BEING EMPLOYED IN A CONCENTRATION OF 1 TO 1000% BY WEIGHT OF THE SAID METAL OXIDE.
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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) | 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 |