US4858078A
Expired / Lapsed
US
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Solid electrolytic capacitor
Assignee: Elna Co Ltd
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Filing: 1988-10-28
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Granted: 1989-08-15
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Expires: 2008-10-28
Abstract
Abstract A solid electrolytic capacitor comprising a dielectric oxide layer and a solid electrolyte layer of a conductive polymer compound formed thereon, wherein said conductive polymer compound is a conductive polymer compound doped with at least one member selected from the group consisting of phosphoric acid, phosphoric acid monoesters, phosphoric acid diesters and salts thereof.
Inventors
- 👤 Takeshi Morimoto
- 👤 Eiji Endoh
- 👤 Satoshi Takemiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
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: 12
Claim 1
Independent Claim
54 words
A solid electrolytic capacitor comprising a dielectric oxide layer and a solid electrolyte layer of a conductive polymer compound formed thereon, wherein said conductive polymer compound is a conductive polymer compound doped with at least one member selected from the group consisting of phosphoric acid, phosphoric acid monoesters, phosphoric acid diesters and salts thereof.
Claim 2
Dependent Claim
54 words
A solid electrolytic capacitor comprising a dielectric oxide layer and a solid electrolyte layer of a conductive polymer compound formed thereon, wherein said conductive polymer compound is a conductive polymer compound doped with at least one member selected from the group consisting of phosphoric acid, phosphoric acid monoesters, phosphoric acid diesters and salts thereof.
Claim 3
Dependent Claim
80 words
The solid electrolytic capacitor according to claim 1, wherein the matrix polymer constituting said conductive polymer compound is a polymer having repeating units represented by the formula: ##STR4## wherein each of R 1 and R 2 is hydrogen, halogen, an alkyl group, an aryl group, an alkylaryl group, or R 1 and R 2 together form a ring structure, and x is --O--, --S--, ##STR5## (wherein R 3 is hydrogen, an alkyl group, an aryl group or an alkylaryl group).
Claim 4
Dependent Claim
39 words
A solid electrolytic capacitor comprising a dielectric oxide layer and a solid electrolyte layer of a conductive polymer compound formed thereon, wherein a flexible polymer compound layer is formed on at least the surface of said conductive polymer compound.
Claim 5
Dependent Claim
39 words
A solid electrolytic capacitor comprising a dielectric oxide layer and a solid electrolyte layer of a conductive polymer compound formed thereon, wherein a flexible polymer compound layer is formed on at least the surface of said conductive polymer compound.
Claim 6
Dependent Claim
41 words
The solid electrolytic capacitor according to claim 3, wherein said conductive polymer compound is a conductive polymer compound doped with at least one member selected from the group consisting of phosphoric acid, phosphoric acid monoesters, phosphoric acid diesters and salts thereof.
Claim 7
Dependent Claim
79 words
The solid electrolytic capacitor according to claim 4, wherein the matrix polymer constituting said conductive polymer compound is a polymer having repeating units represented by the formula: ##STR6## wherein each of R 1 and R 2 is hydrogen, halogen, an alkyl group, aryl group, an alkylaryl group, or R 1 and R 2 together form a ring structure, and X is --O--, --S--, ##STR7## (wherein R 3 is hydrogen, an alkyl group, and aryl group or an alkylaryl group).
Claim 8
Dependent Claim
80 words
The solid electrolytic capacitor according to claim 3, wherein the matrix polymer constituting said conductive polymer compound is a polymer having repeating units represented by the formula: ##STR8## wherein each of R 1 and R 2 is hydrogne, halogen, an alkyl group, an aryl group, an alkylaryl group, or R 1 and R 2 together form a ring structure, and X is --O--, --S--, ##STR9## (wherein R 3 is hydrogen, an alkyl group, an aryl group or an alkylaryl group).
Claim 9
Dependent Claim
30 words
The solid electrolytic capacitor according to claim 3, wherein the flexible polymer compound is at least one compound selected from the group consisting of polyurethane, polyethylene glycol and polyvinyl alcohol.
Claim 10
Dependent Claim
62 words
A solid electrolytic capacitor comprising a dielectric oxide layer and a solid electrolyte layer of a conductive polymer compound formed thereon, wherein said conductive polymer compound is a conductive polymer compound doped with at least one member selected from the group consisting of phosphoric acid, phosphoric acid monoesters, phosphoric acid diesters and salts thereof and having a flexible polymer compound blended therein.
Claim 11
Dependent Claim
62 words
A solid electrolytic capacitor comprising a dielectric oxide layer and a solid electrolyte layer of a conductive polymer compound formed thereon, wherein said conductive polymer compound is a conductive polymer compound doped with at least one member selected from the group consisting of phosphoric acid, phosphoric acid monoesters, phosphoric acid diesters and salts thereof and having a flexible polymer compound blended therein.
Claim 12
Dependent Claim
30 words
The solid electrolytic capacitor according to claim 8, wherein the flexible polymer compound is at least one compound selected from the group consisting of polyurethane, polyethylene glycol and polyvinyl alcohol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-14 | 1993-02-13 | 1993-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-14 | 1997-02-13 | 1997-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-14 | 2001-02-13 | 2001-08-15 | $7700.00 | Window Closed / Lapsed |