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Patent US3380967A successfully refreshed from Google Patents.
US3380967A
Expired / Lapsed
US
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Polyethers and polyurethanes obtained therefrom
Assignee: Diamond Shamrock Europe Ltd
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Filing: 1964-01-06
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Granted: 1968-04-30
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Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 A Lowe
- 👤 E Chandley
- 👤 L Molinario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:24
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/2815; C08G18/283; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4845; C08G2101/00
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |