Patent US3219650A successfully refreshed from Google Patents.
US3219650A
Expired / Lapsed
US
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Process for the polymerization of diolefins
Assignee: Gulf Oil Corp
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Filing: 1960-04-25
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Granted: 1965-11-23
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE PROCESS OF POLYMERIZING A DIOLEFIN WHICH COMPRISES CONTACTING THE DIOLEFIN WITH A CATALYST COMPOSITION COMPRISING AN ORGANOALUMINUM COMPOUND COMBINED WITH A HALIDE OF A METAL FROM A MEMBER OF THE GROUP CONSISTING OF GROUPS IVB, VB, AND VIB OF THE PERIODIC TABLE, AND AN ADDITIVE COMPOUND WHICH NORMALLY FORMS CHELATES WITH METALS, SAID ADDITIVE COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF POLYETHERS HAVING AT LEAST ONE ACYCLIC ETHER GROUP, POLYAMINES AND AMINOETHERS.
Claim 2
Dependent Claim
74 words
THE PROCESS OF POLYMERIZING A DIOLEFIN WHICH COMPRISES CONTACTING THE DIOLEFIN WITH A CATALYST COMPOSITION COMPRISING AN ORGANOALUMINUM COMPOUND COMBINED WITH A HALIDE OF A METAL FROM A MEMBER OF THE GROUP CONSISTING OF GROUPS IVB, VB, AND VIB OF THE PERIODIC TABLE, AND AN ADDITIVE COMPOUND WHICH NORMALLY FORMS CHELATES WITH METALS, SAID ADDITIVE COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF POLYETHERS HAVING AT LEAST ONE ACYCLIC ETHER GROUP, POLYAMINES AND AMINOETHERS.
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GB809717A
Cited
US2886561A
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US2932633A
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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) | 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 |