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US3380969A
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Aromatic polyamides
Assignee: EIDP Inc
•
Filing: 1966-10-18
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Granted: 1968-04-30
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Expires: 1986-10-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold Wayne Hill
- 👤 Kwolek Stephanie Louise
- 👤 Sweeny Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:24
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/32; C08G73/00; C08G73/06; C08G73/10; C08G73/14; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924; Y10S8/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3179614A
Cited
US3260691A
Cited
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 |