US2882263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the polymerization of certain unsaturated hydrocarbons using iron-based polymerization agents
Assignee: Montedison SpA
•
Filing: 1955-12-12
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Granted: 1959-04-14
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Expires: 1975-12-12
Abstract
No abstract record available.
Inventors
- 👤 Natta Giulio
- 👤 Mazzanti Giorgio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:10
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A PROCESS FOR THE POLYMERIZATION OF UNSATURATED HYDROCARBONS OF THE GENERAL FORMUALA
Claim 2
Dependent Claim
12 words
A PROCESS FOR THE POLYMERIZATION OF UNSATURATED HYDROCARBONS OF THE GENERAL FORMUALA
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |