US3417034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process for manufacturing polycyclic polyether polyols of controlled molecular weight
Assignee: Union Carbide Corp
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Filing: 1965-01-07
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Granted: 1968-12-17
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Expires: 1985-01-07
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Hoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:14
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G65/04; C08G65/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |