US3412040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromyl-oxyhalide treated carrier as an olefin polymerization catalyst
Assignee: Montedison SpA
•
Filing: 1964-08-05
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Granted: 1968-11-19
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Expires: 1984-08-05
Abstract
No abstract record available.
Inventors
- 👤 Saccardo Pietro
- 👤 Trada Gianni
- 👤 Fattore Vittorio
- 👤 Herzenberg Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2263623A
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US2825721A
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US2874129A
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US2892000A
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US2993883A
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US3190840A
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US3346511A
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US3216982A
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US3322691A
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US3166544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |