US3459725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High molecular weight unsaturated hydrocarbon homopolymers and process for preparing them
Assignee: Montedison SpA
•
Filing: 1965-01-15
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Granted: 1969-08-05
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Expires: 1985-01-15
Abstract
No abstract record available.
Inventors
- 👤 Giulio Natta
- 👤 Gino Dall Asta
- 👤 Giorgio Mazzanti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08F; C08F10/00; C08F10/14; C08F32/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3074918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |