US4803596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state capacitor with an electroconductive polymer as constituent of the solid electrolyte
Assignee: BASF SE
•
Filing: 1987-10-23
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Granted: 1989-02-07
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Expires: 2007-10-23
Abstract
Abstract In a solid-state capacitor comprising a positive and a negative electrode, a dielectric medium and a solid electrolyte, the solid electrolyte contains an electroconductive polymer as essential constituent.
Inventors
- 👤 Gerhard Hellwig
- 👤 Ottmar Baur
- 👤 Klaus Feisst
- 👤 Helmut Moehwald
- 👤 Helmut Muenstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:22
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025; H01G11/00; H01G11/22; H01G11/30; H01G11/48; H01G11/54; H01G11/56; C; C08; C08G; C08G2261/00; C08G2261/30; C08G2261/31; C08G2261/312; Y; Y02; Y02E; Y02E60/00; Y02E60/13
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
A solid-state capacitor comprising a first metallic electrode, an oxide layer on the electrode as the dielectric layer and a counter electrode consisting of an intrinsically conductive polymer of a 5- or 6-membered aromatic heterocyclic compound, said polymer have been formed by oxidative polymerization of the monomers on the surface of the dielectric layer by means of an oxidant.
Claim 2
Dependent Claim
59 words
A solid-state capacitor comprising a first metallic electrode, an oxide layer on the electrode as the dielectric layer and a counter electrode consisting of an intrinsically conductive polymer of a 5- or 6-membered aromatic heterocyclic compound, said polymer have been formed by oxidative polymerization of the monomers on the surface of the dielectric layer by means of an oxidant.
Claim 3
Dependent Claim
24 words
A solid-state capacitor as defined in claim 1, wherein the intrinsically conductive polymer is formed from pyrrole, thiophene, furan or aniline, or mixtures thereof.
Claim 4
Dependent Claim
62 words
A solid-state capacitor as defined in claim 1, wherein the counter electrode consisting of the intrinsically conductive polymer is formed from a layer of the monomers on the dielectric oxidic layer and one or more porous sheets soaked with the monomers, said soaked sheets having been placed on the dielectric layer, which is wetted with the monomers, whereupon polymerization has taken place.
Claim 5
Dependent Claim
16 words
A solid-state capacitor as defined in claim 3, where the porous sheet consists of carbonized paper.
Claim 6
Dependent Claim
28 words
A solid-state capacitor as claimed in claim 1, wherein the first electrode consists of aluminum and the dielectric layer consists of aluminum oxide generated on the aluminum electrode.
Claim 7
Dependent Claim
17 words
A solid-state capacitor as defined in claim 1 which is in the form of a wound capacitor.
Claim 8
Dependent Claim
16 words
A solid-state capacitor as defined in claim 1 which is encapsulated by an insulating plastic material.
Claim 9
Dependent Claim
38 words
A process for the production of a capacitor, which comprises wetting the oxide layer of a metal foil with a 5- or 6-membered aromatic heterocyclic compound and thereafter polymerizing the adherent monomer film by means of an oxidant.
Claim 10
Dependent Claim
38 words
A process for the production of a capacitor, which comprises wetting the oxide layer of a metal foil with a 5- or 6-membered aromatic heterocyclic compound and thereafter polymerizing the adherent monomer film by means of an oxidant.
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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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |