US3177189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization promoter
Assignee: Honeywell International Inc
•
Filing: 1961-01-27
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Granted: 1965-04-06
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Expires: 1981-01-27
Abstract
No abstract record available.
Inventors
- 👤 Fuhrmann Robert
- 👤 Fred W Koff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:07
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
IN A PROCESS OF POLYMERIZING ALPHA-OLEFINS TO SOLID POLYMERS USING AS A CATALYST A COMBINATION OF ALPHATITANIUM TRICHLORIDE AND A TRIALKYL ALUMINUM COMPOUND, THE IMPROVEMENT WHICH COMPRISES ADMIXING WITH SAID CATALYST A PROMOTER CONSISTING ESSENTIALLY OF 2-OXO-MORPHOLINIUM HALIDE AS DEFINED IN CLAIM 1, THE MOLECULAR PROPORTION OF SAID MORPHOLINIUM HALIDE PER MOLECULAR PROPORTION OF TRIALKYL ALUMINUM BEING IN THE RANGE BETWEEN ABOUT 1:5 AND ABOUT 1:60.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |