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US3349062A
Expired / Lapsed
US
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Halogenated aromatic polyamides
Assignee: EIDP Inc
•
Filing: 1966-07-21
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Granted: 1967-10-24
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Expires: 1986-07-21
Abstract
No abstract record available.
Inventors
- 👤 Hill Harold Wayne
- 👤 Kwolek Stephanie Louise
- 👤 Sweeny Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:21
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A LINEAR FIBER-FORMING, SYNTHETIC POLYCARBONAMIDE WHEREIN RECURRING CARBONAMIDE LINKAGES ARE AN INTEGRAL PART OF THE POLYMER CHAIN FROM THE CLASS CONSISTING OF A HOMOPOLYMER AND A COPOLYMER, THE SAID HOMOPOLYMR AND COPOLYMER CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE CLASS CONSISTING OF
Claim 2
Dependent Claim
42 words
A LINEAR FIBER-FORMING, SYNTHETIC POLYCARBONAMIDE WHEREIN RECURRING CARBONAMIDE LINKAGES ARE AN INTEGRAL PART OF THE POLYMER CHAIN FROM THE CLASS CONSISTING OF A HOMOPOLYMER AND A COPOLYMER, THE SAID HOMOPOLYMR AND COPOLYMER CONSISTING ESSENTIALLY OF RECURRING UNITS OF THE CLASS CONSISTING OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |