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US3445446A
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US
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Process and catalyst for polymerizing butadiene or isoprene whereby the catalyst is composed of an organoaluminum compound,iodine,and tix2 or tix3 complexed with fatty acid amides
Assignee: Phillips Petroleum Co
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Filing: 1966-01-19
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Granted: 1969-05-20
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Farrar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:55
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04
Claims Analysis
Total Claims: 0
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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) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |