Patent US5104580A successfully refreshed from Google Patents.
US5104580A
Expired / Lapsed
US
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Conductive composite polymer film and method for its manufacture
Assignee: Thales SA
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Filing: 1988-07-28
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Granted: 1992-04-14
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Expires: 2008-07-28
Abstract
Abstract Disclosed is an electrically conductive composite polymer film formed from an organic matrix and conductive charges. The matrix is a polymer obtained from a filmogenic macromolecular latex and the conductive charges consist of a conductive polymer diffused in the matrix. The invention can be applied to microwave absorbent layers.
Inventors
- 👤 Francois Henry
- 👤 Dominique Broussoux
- 👤 Jean-Claude Dubois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:34
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/88; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; B29K; B29K2019/00; B29K2995/00; B29K2995/0003; B29K2995/0005; B29L; B29L2007/00; B29L2007/008
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
An electrically conductive composite polymer film comprising an organic matrix and conductive charges, wherein the matrix is a porous polymer obtained from a filmogenic macromolecular latex, wherein said latex is a stable dispersion of said matrix polymer in an aqueous medium, and wherein the conductive charges consist of an electrically conductive effective amount of a conductive polymer, said conductive polymer comprising heterocyclical monomer units, wherein said diffused conductive polymer is electrically conductive, diffused evenly in the matrix with respect to a plane parallel to the surface of the film.
Claim 2
Dependent Claim
89 words
An electrically conductive composite polymer film comprising an organic matrix and conductive charges, wherein the matrix is a porous polymer obtained from a filmogenic macromolecular latex, wherein said latex is a stable dispersion of said matrix polymer in an aqueous medium, and wherein the conductive charges consist of an electrically conductive effective amount of a conductive polymer, said conductive polymer comprising heterocyclical monomer units, wherein said diffused conductive polymer is electrically conductive, diffused evenly in the matrix with respect to a plane parallel to the surface of the film.
Claim 3
Dependent Claim
16 words
A composite polymer film according to claim 1 wherein the latex is a butyl stryrene-acrylate latex.
Claim 4
Dependent Claim
16 words
A composite polymer film according to claim 1 wherein the latex is a butyl acrylate latex.
Claim 5
Dependent Claim
30 words
A composite polymer film according to claim 1 wherein the latex is magnetic, and wherein said magnetic latex comprises magnetic charges inserted into the core of the macromolecular latex particles.
Claim 6
Dependent Claim
19 words
A composite polymer film according to claim 1 wherein said monomor is thiophene, bithiophene or pyrrole, substituted or unsubstituted.
Claim 7
Dependent Claim
23 words
A composite polymer film according to claim 5 wherein said monomer is bithiophene β-substituted by a (CH 2 ) 11 CH 3 group.
Claim 8
Dependent Claim
23 words
A composite polymer film according to claim 1, wherein the impedance of said polymer film varies along the thickness of said polymer film.
Claim 9
Dependent Claim
23 words
A composite polymer film according to claim 1, comprising a concentration gradient in said conductive polymer along the thickness of said polymer film.
Claim 10
Dependent Claim
38 words
A composite polymer film according to claim 7, wherein the electrical conduction at one surface of said film is substantially zero and wherein the electrical conduction at the other surface of said film is substantially semiconductive or metallic.
Claim 11
Dependent Claim
15 words
A composite polymer film according to claim 1, wherein said latex comprises monodispersed latex particles.
References Cited (Backward Citations)
US4622170A
Cited
US4705645A
Cited
US4755326A
Cited
EP0184367A1
Cited
JPS61243198A
Cited
US4769115A
Cited
US5034463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-14 | 1995-10-14 | 1996-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-14 | 1999-10-14 | 2000-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-14 | 2003-10-14 | 2004-04-14 | $7700.00 | Window Closed / Lapsed |