US2908672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of conjugated diolefins with a catalyst consisting of a binary alloy of a group ii-a metal and lithium
Assignee: EIDP Inc
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Filing: 1957-03-21
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Granted: 1959-10-13
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Jackson Harold Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:25
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
THE PROCESS FOR THE POLYMERIZATION OF AT LEAST ONE 1,3-DIENE HAVING UP TO 12 CARBON ATOMS AND OF THE FORMULA:
Claim 2
Dependent Claim
20 words
THE PROCESS FOR THE POLYMERIZATION OF AT LEAST ONE 1,3-DIENE HAVING UP TO 12 CARBON ATOMS AND OF THE FORMULA:
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) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |