US6462936B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid electrolytic capacitor
Assignee: Sanyo Electric Co Ltd
•
Filing: 1999-10-22
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Granted: 2002-10-08
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Expires: 2019-10-22
Abstract
Abstract The solid electrolytic capacitor of the invention contains an anode, a dielectric film formed on the anode by anodic oxidation, a solid electrolytic layer formed on the dielectric film, and a cathode connected with the solid electrolytic layer, the solid electrolytic layer being made from a conducting polymer obtained by doping with alkyl sulfonic acid ions, a polymer including a heterocyclic monomer unit represented by the following general formula as a repeating unit:The solid electrolytic capacitor of the invention has large capacitance and exhibits low impedance in a high frequency region.
Inventors
- 👤 Masahisa Fujimoto
- 👤 Shin Fujitani
- 👤 Koji Nishio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:33
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; Y; Y02; Y02E; Y02E60/00; Y02E60/13
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A solid electrolytic capacitor comprising an anode, a dielectric film formed on the anode by anodic oxidation, a solid electrolytic layer formed on the dielectric film, and a cathode connected with the solid electrolytic layer, the solid electrolytic layer being made from a conducting polymer obtained by doping, with alkyl sulfonic acid ions, a polymer including a heterocyclic monomer unit represented by the following general formula as a repeating unit in a ratio of one of the alkyl sulfonic acid ions per 2 through 5 heterocyclic monomer units represented by the general formula: wherein R 1 and R 2 independently indicate an alkyl group or H, and X indicates S or NR 3 in which R 3 indicates an alkyl group or H.
Claim 2
Dependent Claim
123 words
A solid electrolytic capacitor comprising an anode, a dielectric film formed on the anode by anodic oxidation, a solid electrolytic layer formed on the dielectric film, and a cathode connected with the solid electrolytic layer, the solid electrolytic layer being made from a conducting polymer obtained by doping, with alkyl sulfonic acid ions, a polymer including a heterocyclic monomer unit represented by the following general formula as a repeating unit in a ratio of one of the alkyl sulfonic acid ions per 2 through 5 heterocyclic monomer units represented by the general formula: wherein R 1 and R 2 independently indicate an alkyl group or H, and X indicates S or NR 3 in which R 3 indicates an alkyl group or H.
Claim 3
Dependent Claim
104 words
A solid electrolytic capacitor comprising an anode, a dielectric film formed on the anode by anodic oxidation, a solid electrolytic layer formed on the dielectric film, and a cathode connected with the solid electrolytic layer, the solid electrolytic layer being made from a conducting polymer obtained by doping, with alkyl sulfonic acid ions and sulfuric acid ions, a polymer including a heterocyclic monomer unit represented by the following general formula as a repeating unit: wherein R 1 and R 2 independently indicate an alkyl group or H, and X indicates S or NR 3 in which R 3 indicates an alkyl group or H.
Claim 4
Dependent Claim
104 words
A solid electrolytic capacitor comprising an anode, a dielectric film formed on the anode by anodic oxidation, a solid electrolytic layer formed on the dielectric film, and a cathode connected with the solid electrolytic layer, the solid electrolytic layer being made from a conducting polymer obtained by doping, with alkyl sulfonic acid ions and sulfuric acid ions, a polymer including a heterocyclic monomer unit represented by the following general formula as a repeating unit: wherein R 1 and R 2 independently indicate an alkyl group or H, and X indicates S or NR 3 in which R 3 indicates an alkyl group or H.
Claim 5
Dependent Claim
40 words
The solid electrolytic capacitor according to claim 2 , wherein the polymer is doped in a ratio of one of alkyl sulfonic acid ions and sulfuric acid ions per 2 through 5 heterocyclic monomer units represented by the general formula.
Claim 6
Dependent Claim
27 words
The solid electrolytic capacitor according to any of claim 1 , 2 or 3 , wherein the anode and the cathode are made from aluminum or tantalum.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-10-07 | 2006-04-08 | 2006-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-07 | 2010-04-08 | 2010-10-08 | $3760.00 | Window Closed / Lapsed |
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