Patent US3094511A successfully refreshed from Google Patents.
US3094511A
Expired / Lapsed
US
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Wholly aromatic polyamides
Assignee: EIDP Inc
•
Filing: 1958-11-17
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Granted: 1963-06-18
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Expires: 1978-11-17
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
2026-10-29 23:31
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D01F6/605; 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 LINKAGE ARE AN INTEGRAL PART OF THE POLYMER CHAIN FROM THE CLASS CONSISTING OF A HOMOPOLYMER AND A COPOLYMER, THE SAID HOMOPOLYMER 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 LINKAGE ARE AN INTEGRAL PART OF THE POLYMER CHAIN FROM THE CLASS CONSISTING OF A HOMOPOLYMER AND A COPOLYMER, THE SAID HOMOPOLYMER 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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |