Patent US3553287A successfully refreshed from Google Patents.
US3553287A
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Polymerization of polyolefins with macromolecular compounds reacted with organo aluminum compounds
Assignee: Sobray and Cie
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Filing: 1968-06-10
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Granted: 1971-01-05
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Expires: 1988-06-10
Abstract
Abstract OLEFINS ARE POLYMERIZED AND COPOLYMERIZED WITH ONE ANOTHER AND WITH DIOLESINS IN THE PRESENCE OF A NEW SOLID CATALYST. THE NEW CATALYST IS OBTAINED BY COMBINING ONE OR MORE TRANSITION METAL COMPOUNDS WITH THE PRODUCT OF REACTION OF AN ORGANOALUMINUM COMPOUND AND A MACROMOLECULAR COMPOUND WHICH CONTAINS AT LEAST ONE OF THE FOLLOWED REACTIVE GROUPS >C=O,>C=N, AND -C$N.
Inventors
- 👤 Andre Delbouille
- 👤 Paul Henrioulle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:54
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 |