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Patent US3471587A successfully refreshed from Google Patents.
US3471587A
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Fluorinated polyphenylene oxide polymers and blends thereof with polyarylsulfones
Assignee: 3M Co
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Filing: 1967-03-08
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Granted: 1969-10-07
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Expires: 1987-03-08
Abstract
No abstract record available.
Inventors
- 👤 Charles A Whittemore
- 👤 Richard F Heine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:33
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L81/00; C08L81/06; Y; Y10; Y10S; Y10S525/00; Y10S525/905; Y10S525/906; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR1384255A
Cited
US3375297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |