US2969408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and catalyst for polymerization of olefins
Assignee: Phillips Petroleum Co
•
Filing: 1955-12-30
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Granted: 1961-01-24
•
Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Nowlin Gene
- 👤 Harold D Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:07
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C08; C08F; C08F10/00; C08F10/02; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A METHOD FOR PRODUCING NORMALLY GASEOUS AND LIQUID POLYMERS OF ETHYLENE WHICH COMPRISES CONTACTING ETHYLENE WITH A CATALYST CONSISTING ESSENTIALLY OF AN APPROXIMATELY EQUIMOLAR MIXTURE OF ETHYLALUMINUM DICHLORIDE AND DIETHYLALUMINUM CHLORIDE AND TRIPHENYLPHOSPHINE-NICKEL CARBONYL-COMPLEX
Claim 2
Independent Claim
34 words
A METHOD FOR PRODUCING NORMALLY GASEOUS AND LIQUID POLYMERS OF ETHYLENE WHICH COMPRISES CONTACTING ETHYLENE WITH A CATALYST CONSISTING ESSENTIALLY OF AN APPROXIMATELY EQUIMOLAR MIXTURE OF ETHYLALUMINUM DICHLORIDE AND DIETHYLALUMINUM CHLORIDE AND TRIPHENYLPHOSPHINE-NICKEL CARBONYL-COMPLEX
References Cited (Backward Citations)
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US2666756A
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US2713044A
Cited
US2781410A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |