Patent US5378230A successfully refreshed from Google Patents.
Patent US3600350A successfully refreshed from Google Patents.
US3600350A
Expired / Lapsed
US
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Poly(p-benzamide) composition,process and product
Assignee: EIDP Inc
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Filing: 1970-04-20
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Granted: 1971-08-17
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Expires: 1990-04-20
Abstract
Abstract HIGH MOLECULAR WEIGHT POLYMERS CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE FURMULA -(NH-(1,4-PHENYLENE)-CO)AND CERTAIN COPOLYMERS THEREOF ARE USEFUL FOR THE PRODUCTION OF FIBERS HAVING A HIGH INITIAL MODULUS.
Inventors
- 👤 Stephanie Louise Kwolek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/12; Y; Y10; Y10S; Y10S525/00; Y10S525/935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |