US4929316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing organic semi-conductor solid electrolytic capacitor
Assignee: Niksuko Corp
•
Filing: 1989-08-30
•
Granted: 1990-05-29
•
Expires: 2009-08-30
Abstract
Abstract A method of manufacturing an organic semi-conductor solid electrolytic capacitor wherein a conductive polymer thin film layer of a heterocyclic compound, i.e., pyrrole, thiophene or furan, is formed as a solid electrolyte on the surface of a metal substrate having a dielectric oxide film formed thereon by electrolytic oxidation polymerization carried out in an electrolytic solution which contains pyrrole, thiophene or furan as a heterocyclic compound and an aliphatic or aromatic sulfonic acid or a salt thereof as a supporting electrolyte in an organic solvent, for example, acetonitrile, acetone or propylene carbonate.
Inventors
- 👤 Yoshihiro Harakawa
- 👤 Seiya Takahashi
- 👤 Koji Izawa
- 👤 Hidemitsu Takeuchi
- 👤 Keizo Ikari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025; C; C25; C25D; C25D9/00; C25D9/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor comprising at least the following means: means for forming a dielectric oxide film on the surface of a metal substrate; and means for forming a conductive polymer thin film layer of a heterocyclic compound on the surface of said dielectric oxide film by electrolytic oxidation polymerization carried out in an electrolytic solution which contains a heterocyclic compound and an aliphatic or aromatic sulfonic acid or a salt thereof as a supporting electrolyte in an organic solvent.
Claim 2
Independent Claim
86 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor comprising at least the following means: means for forming a dielectric oxide film on the surface of a metal substrate; and means for forming a conductive polymer thin film layer of a heterocyclic compound on the surface of said dielectric oxide film by electrolytic oxidation polymerization carried out in an electrolytic solution which contains a heterocyclic compound and an aliphatic or aromatic sulfonic acid or a salt thereof as a supporting electrolyte in an organic solvent.
Claim 3
Dependent Claim
31 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to claim 1, wherein said organic solvent is one selected from the group consisting of acetonitrile, acetone and propylene carbonate.
Claim 4
Dependent Claim
30 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to claim 1, wherein said heterocyclic compound is one selected from the group consisting of pyrrole, thiophene and furan.
Claim 5
Independent Claim
26 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to any of claims 1 to 3, wherein said aliphatic sulfonic acid is tetraethyl-ammonium butanesulfonate.
Claim 6
Independent Claim
26 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to any of claims 1 to 3, wherein said aliphatic sulfonic acid is tetraethyl-ammonium octanesulfonate.
Claim 7
Independent Claim
26 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to any of claims 1 to 3, wherein said aliphatic sulfonic acid is tetraethyl-ammonium decanesulfonate.
Claim 8
Independent Claim
26 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to any of claims 1 to 3, wherein said aliphatic sulfonic acid is tetraethyl-ammonium dodecylsulfonate.
Claim 9
Independent Claim
26 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to any of claims 1 to 3, wherein said aromatic sulfonic acid is benzenesulfonic acid.
Claim 10
Independent Claim
26 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to any of claims 1 to 3, wherein said aromatic sulfonic acid is tetraethyl-ammonium p-toluenesulfonate.
Claim 11
Independent Claim
26 words
A method of manufacturing an organic semi-conductor solid electrolytic capacitor according to any of claims 1 to 3, wherein said aromatic sulfonic acid is dodecylbenzene-sulfonic acid.
References Cited (Backward Citations)
GB2026773A
Cited
JPS5636124A
Cited
JPS60244017A
Cited
DE3419552A1
Cited
JPS612315A
Cited
JPS62189714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |