US3293229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable, promoted catalyst systems for highly crystalline alpha olefin polymers
Assignee: Union Carbide Corp
•
Filing: 1963-01-28
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Granted: 1966-12-20
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Levine Isaac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:06
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906; Y10S526/908
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
10 words
METHOD FOR POLYMERIZING OLEFINICALLY UNSATURATED HYDROCARBON MONOMERS HAVING THE FORMULA
References Cited (Backward Citations)
US2943063A
Cited
US2909510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |