Patent US3435017A successfully refreshed from Google Patents.
US3435017A
Expired / Lapsed
US
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Isotactic polymers of butene-1
Assignee: Montedison SpA
•
Filing: 1958-06-13
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Granted: 1969-03-25
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Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Giulio Natta
- 👤 Piero Pino
- 👤 Giorgio Mazzanti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:57
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/04; B; B65; B65G; B65G65/00; C; C08; C08F; C08F10/00; C08F10/04; C08F10/08; C08F110/00; C08F110/04; C08F110/08; C08F210/00; C08F36/00; C08F36/02; C08F6/00; C08F6/02; H; H01; H01J; H01J13/00; H01J13/02; H01J13/04; H01J13/06; H01J13/10; B65G2814/00; B65G2814/03; B65G2814/0301; B65G2814/0314; B65G2814/0316; B65G2814/0317; C08F110/02; F; F02; F02B; F02B3/00; F02B3/06; H01J2893/00; H01J2893/0072; H01J2893/0073; H01J2893/0074; H01J2893/0075; H01J2893/0078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2825721A
Cited
US2858902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |