US3645995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1969-01-16
•
Granted: 1972-02-29
•
Expires: 1989-01-16
Abstract
Abstract OLEFINES OF 5 OR MORE CARBON ATOMS ARE POLYMERIZED USING A CATALYST OF TITANIUM TRICHLORIDE/ORGANOMETALLIC ACTIAVTOR. THE TITANIUM TRICHLORIDE COMPONENT OF THE CATALYST IS PREPARED BY THE REDUCTION OF TITANIUM TETRACHLORIDE WITH A HIGH ALUMINUM ALKYL COMPOUND, PARTICULARLY ISOBUTYL ALUMINUM SEQUICHLORIDE.
Inventors
- 👤 Anthony David Caunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:07
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/14; C08F110/00; C08F110/04; C08F110/06; C08F110/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |