US3219648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin catalysts and processes
Assignee: Gulf Oil Corp
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Filing: 1964-01-08
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Granted: 1965-11-23
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Expires: 1984-01-08
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:45
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
THE PROCESS OF POLYMERIZING A MONO-1-OLEFIN OF THREE TO EIGHT CARBON ATOMS WHICH COMPRISES EFFECTING THE POLYMERIZATION WITH A 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 PEROIDIC 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) AN ADDITIVE COMPOUND SELECTED FROM A MEMBER OF THE GROUP CONSISTING OF THOSE POLYAMINES, POLYETHERS, AMINOETHERS, AMINOALCOHOLS AND HYDROXYETHERS WHICH CHELATE METALS.
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 |