Patent US4669885A successfully refreshed from Google Patents.
Patent US3219651A successfully refreshed from Google Patents.
US3219651A
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US
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Process for the polymerization of ethylene in the presence of a ziegler-type catalyst and as a catalytic modifter a polydentate compound
Assignee: Gulf Oil Corp
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Filing: 1960-08-05
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Granted: 1965-11-23
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Expires: 1980-08-05
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hill
- 👤 Robert L Batchelor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE PROCESS OF POLYMERIZING ETHYLENE WHICH COMPRISES EFFECTING THE POLYMERIZATION WITH A POLYMERIZATION CATALYST COMBINATION COMPRISING (A) AN ORGANOMETALLIC COMPOUND IN WHICH THE METAL THEREIN IS SELECTED FROM A MEMBER OF THE GROUP CONSISTING OF GROUPS IIA, IIB AND IIIA OF THE PERIODIC TABLE, (B) A METAL HALIDE IN WHICH THE METAL THEREIN IS SELECTED FROM A MEMBER OF THE GROUP CONSISTING OF GROUPS IVB, VB AND VIB OF THE PERIODIC TABLE, AND (C) A MEMBER OF THE GROUP CONSISTING OF POLYAMINES AND AMINOETHERS.
Claim 2
Dependent Claim
84 words
THE PROCESS OF POLYMERIZING ETHYLENE WHICH COMPRISES EFFECTING THE POLYMERIZATION WITH A POLYMERIZATION CATALYST COMBINATION COMPRISING (A) AN ORGANOMETALLIC COMPOUND IN WHICH THE METAL THEREIN IS SELECTED FROM A MEMBER OF THE GROUP CONSISTING OF GROUPS IIA, IIB AND IIIA OF THE PERIODIC TABLE, (B) A METAL HALIDE IN WHICH THE METAL THEREIN IS SELECTED FROM A MEMBER OF THE GROUP CONSISTING OF GROUPS IVB, VB AND VIB OF THE PERIODIC TABLE, AND (C) A MEMBER OF THE GROUP CONSISTING OF POLYAMINES AND AMINOETHERS.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |