US3255169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum hydroaminate activators in olefin polymerization
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-05-03
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Granted: 1966-06-07
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Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 Kenneth K Kearby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:27
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
IN A PROCESS FOR POLYMERIZING PROPYLENE IN THE PRESENCE OF THE CATALYST FORMED BY MIXING AN ALUMINUM CONTAINING COMPOUND WITH AN ALUMINUM REDUCED TITANIUMTETRACHLORIDE CONTAINING COCRYSTALLIZED ALCL3, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS THE ALUMINUM COMPOUND HA(NHC4H9)2.
Claim 2
Dependent Claim
37 words
IN A PROCESS FOR POLYMERIZING PROPYLENE IN THE PRESENCE OF THE CATALYST FORMED BY MIXING AN ALUMINUM CONTAINING COMPOUND WITH AN ALUMINUM REDUCED TITANIUMTETRACHLORIDE CONTAINING COCRYSTALLIZED ALCL3, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS THE ALUMINUM COMPOUND HA(NHC4H9)2.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |