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US3432445A
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Catalyst compositions based on bivalent metals and the application thereof,particularly for the polymerization of cyclic ethers
Assignee: IFP Energies nouvelles
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Filing: 1966-05-02
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Granted: 1969-03-11
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Maseh Osgan
- 👤 Jean-Pierre Silly
- 👤 Philippe Teyssie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:09
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/14; C07; C07F; C07F19/00; C07F19/005; C08G65/26; C08G65/2642; C08G65/269
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |