Patent US3455867A successfully refreshed from Google Patents.
US3455867A
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US
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Oxymethylene polymers
Assignee: Celanese Corp
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Filing: 1965-04-01
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Granted: 1969-07-15
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Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 Frank M Berardinelli
- 👤 David L Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:23
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/56; C08K; C08K5/00; C08K5/16; C08K5/29; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08J2359/00; C08J2359/02
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) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |