US5069959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural composites of fluoropolymers reinforced with continuous filament fibers
Assignee: EIDP Inc
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Filing: 1990-10-09
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Granted: 1991-12-03
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Expires: 2010-10-09
Abstract
Abstract A composite comprising a fluoropolymer resin matrix reinforced with continuous filament aligned fibers for use in corrosive high temperature environments.
Inventors
- 👤 Wayne F. Gentile
- 👤 Harvey L. Kliman
- 👤 William H. Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:07
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J2327/00; C08J2327/02; C08J2327/12; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249944; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A composite comprising: a matrix PFA (perfluoroalkoxy) fluorocarbon resin having a melt flow index of from about 2 to about 30 reinforced with continuous filament fibers, said matrix resin being from about 30% to about 70% by volume of said composite, said composite having a flex modulus above 5 million psi.
Claim 2
Dependent Claim
51 words
A composite comprising: a matrix PFA (perfluoroalkoxy) fluorocarbon resin having a melt flow index of from about 2 to about 30 reinforced with continuous filament fibers, said matrix resin being from about 30% to about 70% by volume of said composite, said composite having a flex modulus above 5 million psi.
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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) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-02 | 2003-06-03 | 2003-12-03 | $7700.00 | Window Closed / Lapsed |