US3553181A
Expired / Lapsed
US
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Process for the polymerization and copolymerization of olefins
Assignee: Solvay SA
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Filing: 1967-11-16
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Granted: 1971-01-05
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Expires: 1987-11-16
Abstract
Abstract OLEFINS AND DIOLEFINS ARE POLYMERIZED AND COPOLYMERIZED IN THE PRESENCE OF A CATALYST WHICH IS OBTAINED BY REACTING A TRANSITION METAL COMPOUND WITH MACROMOLECULAR NITROGENOUS COMPOUND WHICH IS SUBSTANTIALLY FREE OF HYDROXYL GROUPS AND THEN ACTIVATING THE THUS OBTAINED PRODUCT WITH AN ORGANOMETALLIC COMPOUND.
Inventors
- 👤 Andre Delbouille
- 👤 Jean-Louis Deroitte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:27
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |