US3459685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of cyclic alkylene oxides with catalyst systems of a polymeric aluminum alcoholate and an organometallic
Assignee: Texaco Inc
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Filing: 1967-03-28
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Granted: 1969-08-05
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Expires: 1987-03-28
Abstract
No abstract record available.
Inventors
- 👤 Hideo Tomomatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:28
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C07; C07F; C07F3/00; C07F3/06; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2870100A
Cited
US3345347A
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 |