US3342793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of alpha-olefins in the presence of ticl3.1/3alcl3, alkali metal and an alkyl phosphoramide or sulfuric amide
Assignee: SNIA Viscosa SpA
•
Filing: 1963-04-23
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Granted: 1967-09-19
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Palvarini Attilio
- 👤 Parentela Annamaria
- 👤 Caporale Sabino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:32
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/905; Y10S526/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROCESS FOR HOMOPOLYMERIZATION OF OLEFINS SELECTED FROM THE GROUP COSISTING OF ETHYLENE AND PROPYLENE, FOR PROVIDING A HIGHLY CRYSTALLINE POLYMER, COMPRISING EFFECTING THE HOMOPOLYMERIZATION BY A COMPLEXED CATALYST SYSTEM CONSISTING OF A COMPLEX SALT TITANIUM TRICHLORIDE-ALUMINUM TRICHLORIDE OF THE FORMULA
Claim 2
Dependent Claim
41 words
A PROCESS FOR HOMOPOLYMERIZATION OF OLEFINS SELECTED FROM THE GROUP COSISTING OF ETHYLENE AND PROPYLENE, FOR PROVIDING A HIGHLY CRYSTALLINE POLYMER, COMPRISING EFFECTING THE HOMOPOLYMERIZATION BY A COMPLEXED CATALYST SYSTEM CONSISTING OF A COMPLEX SALT TITANIUM TRICHLORIDE-ALUMINUM TRICHLORIDE OF THE FORMULA
References Cited (Backward Citations)
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Cited
GB785314A
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US3093625A
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GB824451A
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FR1231089A
Cited
US2962487A
Cited
US3032510A
Cited
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Cited
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Cited
US3239497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |