US3769373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerisation of unsaturated hydrocarbons
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1959-05-27
•
Granted: 1973-10-30
•
Expires: 1979-05-27
Abstract
Abstract A COMPONENT OF AN OLEFINE POLYMERISATION CATALYST IS PREPARED BY THE REACTION BETWEEN ALUMINUM AND TITANIUM TETRACHLORIDE PREFERABLY UNDER REFLUX CONDITIONS IN THE PRESENCE OF ALUMINUM CHLORIDE. THE PRODUCT HAS THE APPROXIMATE EMPIRICAL FORMULA ALTI3CL12 AND WHEN BALLMILLED FORMS A HIGHLY ACTIVE POLYMERISATION CATALYST IN COMBINATION WITH AN ORGANO-ALUMINUM COMPOUND.
Inventors
- 👤 H Reed
- 👤 A Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:17
CPC Classifications
C; C08; C08F; C08F10/00; C08F110/00; C08F110/04; C08F110/06; Y; Y10; Y10S; Y10S526/00; Y10S526/906
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |