US3032544A
Expired / Lapsed
US
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Polymerization catalysts and method of polymerizing diolefins therewith
Assignee: Montedison SpA
•
Filing: 1959-05-15
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Granted: 1962-05-01
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Expires: 1979-05-15
Abstract
No abstract record available.
Inventors
- 👤 Longiave Carlo
- 👤 Castelli Renato
- 👤 Croce Gaudenzio
- 👤 Bonazzi Teresa Romerio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:13
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F136/00; C08F136/02; C08F136/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A POLYMERIZATION CATALYST PREPARED BY COMBINING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF COBALT NICKEL, ALLOYS OF COBALT AND ALLOYS OF NICKEL WITH A DIALKYL ALUMINUM MONOHALIDE SELECTED FROM THE GROUP CONSISTING OF THE MONOCHLORIDES AND MONOBROMIDES IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 5 CARBON ATOMS.
Claim 2
Dependent Claim
50 words
A POLYMERIZATION CATALYST PREPARED BY COMBINING A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF COBALT NICKEL, ALLOYS OF COBALT AND ALLOYS OF NICKEL WITH A DIALKYL ALUMINUM MONOHALIDE SELECTED FROM THE GROUP CONSISTING OF THE MONOCHLORIDES AND MONOBROMIDES IN WHICH THE ALKYL GROUPS CONTAIN FROM 1 TO 5 CARBON ATOMS.
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) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |