US3400187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating polyester structures with polyalkylene glycol and a metal hyderoxide
Assignee: Celanese Corp
•
Filing: 1964-02-25
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Granted: 1968-09-03
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Expires: 1984-02-25
Abstract
No abstract record available.
Inventors
- 👤 Farrow Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:12
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53; D06M11/00; D06M11/32; D06M11/36; D06M11/38; D06M11/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB758745A
Cited
US2998296A
Cited
US2955954A
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US2938811A
Cited
US3135577A
Cited
US3190718A
Cited
US3110617A
Cited
US3251913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |