US3055880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins with an aluminum carbide-titanium tetrahalide catalyst
Assignee: Henkel AG and Co KGaA
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Filing: 1959-09-28
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Granted: 1962-09-25
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Expires: 1979-09-28
Abstract
No abstract record available.
Inventors
- 👤 Raccke Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:11
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/38; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF POLYMERIZING LOWER ALKENES WHICH COMPRISES HEATING SAID ALKENES IN AN INERT ATMOPHERE TO A TEMPERATURE UPWARD OF 100*C. AT A PRESSURE OF AT LEAST 20 ATMOSPHERES'' GAUGE IN THE PRESENCE OF A CATALYS MIXTURE CONSISTING OF (2) ABOUT ONE PART BY WEIGHT OF TITANIUM TETRAHALIDE AND (2) ABOUT 0.5 TO ABOUT 3 PARTS BY WEIGHT OF ALIMINUM CARBIDE.
Claim 2
Independent Claim
61 words
THE METHOD OF POLYMERIZING LOWER ALKENES WHICH COMPRISES HEATING SAID ALKENES IN AN INERT ATMOPHERE TO A TEMPERATURE UPWARD OF 100*C. AT A PRESSURE OF AT LEAST 20 ATMOSPHERES'' GAUGE IN THE PRESENCE OF A CATALYS MIXTURE CONSISTING OF (2) ABOUT ONE PART BY WEIGHT OF TITANIUM TETRAHALIDE AND (2) ABOUT 0.5 TO ABOUT 3 PARTS BY WEIGHT OF ALIMINUM CARBIDE.
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) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |