US4580855A
Expired / Lapsed
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Solid electrolyte capacitor
Assignee: Sanyo Electric Co Ltd
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Filing: 1982-04-13
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Granted: 1986-04-08
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Expires: 2002-04-13
Abstract
Abstract In a solid electrolyte capacitor with a solid electrolyte, an improvement wherein the solid electrolyte is the one obtained by cooling a 7,7,8,8-tetracyanoquinodimethane salt in a liquid state for solidification, the 7,7,8,8-tetracyanoquinodimethane salt being so stable in a liquid state as not substantially decomposing for a sufficient period of time from completion of its liquefaction.
Inventors
- 👤 Shiichi Niwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025; H01G9/028
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
55 words
In a solid electrolyte capacitor with a solid electrolyte, the improvement wherein the solid electrolyte is obtained by solidifying a liquid 7,7,8,8-tetracyanoquinodimethane salt by cooling, said salt being so stable in the liquid state as not substantially decomposing for a period of time sufficient to allow contact with and attachment to an oxide-film forming metal.
Claim 2
Dependent Claim
55 words
In a solid electrolyte capacitor with a solid electrolyte, the improvement wherein the solid electrolyte is obtained by solidifying a liquid 7,7,8,8-tetracyanoquinodimethane salt by cooling, said salt being so stable in the liquid state as not substantially decomposing for a period of time sufficient to allow contact with and attachment to an oxide-film forming metal.
Claim 3
Dependent Claim
39 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is retained in the liquid state at a temperature not higher than 320° C. for a period of not more than about 4 minutes after completion of the liquification.
Claim 4
Dependent Claim
39 words
The capacitor according to claim 2, wherein the 7,7,8,8-tetracyanoquinodimethane salt is retained in the liquid state at a temperature not higher than 300° C. for a period of not more than about 1 minute after completion of the liquification.
Claim 5
Dependent Claim
29 words
The capacitor according to claim 1 wherein the 7,7,8,8-tetracyanoquinodimethane salt is a salt with an N-substituted quinoline or isoquinoline wherein the substituent at the N-position is a hydrocarbon group.
Claim 6
Dependent Claim
20 words
The capacitor according to claim 4, wherein the substituent at the N-position is a C 2 -C 18 alkyl group.
Claim 7
Dependent Claim
14 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is the N-n-propylquinolinium salt.
Claim 8
Dependent Claim
14 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is the N-isopropylquinolinium salt.
Claim 9
Dependent Claim
14 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is the N-n-hexylquinolinium salt.
Claim 10
Dependent Claim
14 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is the N-ethylisoquinolinium salt.
Claim 11
Dependent Claim
14 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is the N-n-propylisoquinolinium salt.
Claim 12
Dependent Claim
14 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is the N-isopropylisoquinolinium salt.
Claim 13
Dependent Claim
14 words
The capacitor according to claim 1, wherein the 7,7,8,8-tetracyanoquinodimethane salt is the N-n-butylisoquinolinium salt.
Claim 14
Dependent Claim
56 words
In a solid electrolyte capacitor comprising a positive film-forming metal having an anodized surface, a solid electrolyte and a negative collector, the improvement wherein the solid electrolyte is a complex salt of 7,7,8,8-tetracyanoquinodimethane and an N(C 2 -C 18 ) alkyl isoquinoline, said solid electrolyte being formed by solidifying said complex salt from the liquid state.
Claim 15
Dependent Claim
56 words
In a solid electrolyte capacitor comprising a positive film-forming metal having an anodized surface, a solid electrolyte and a negative collector, the improvement wherein the solid electrolyte is a complex salt of 7,7,8,8-tetracyanoquinodimethane and an N(C 2 -C 18 ) alkyl isoquinoline, said solid electrolyte being formed by solidifying said complex salt from the liquid state.
Claim 16
Dependent Claim
23 words
The capacitor according to claim 13, wherein the molar proportion between the 7,7,8,8-tetracyanoquinodimethane and the N-(C 2 -C 18 )alkyl-isoquinoline is about 1:1.
Claim 17
Dependent Claim
58 words
In a method for forming a solid electrolyte capacitor, the improvement wherein the solid electrolyte is obtained by solidifying a 7,7,8,8-tetracyanoquinodimethane salt from the liquid state by cooling, said salt being so stable in the liquid state as not substantially decomposing for a period of time sufficient to allow contact with and attachment to an oxide film-forming metal.
Claim 18
Dependent Claim
58 words
In a method for forming a solid electrolyte capacitor, the improvement wherein the solid electrolyte is obtained by solidifying a 7,7,8,8-tetracyanoquinodimethane salt from the liquid state by cooling, said salt being so stable in the liquid state as not substantially decomposing for a period of time sufficient to allow contact with and attachment to an oxide film-forming metal.
Claim 19
Dependent Claim
32 words
The process according to claim 15, wherein the salt is maintained in the liquid state for a period of not more than 4 minutes, at a temperature not higher than 320° C.
Claim 20
Dependent Claim
33 words
The process according to claim 16, wherein the salt is maintained in the liquid state for a period not more than about 1 minute, at a temperature not higher than about 300° C.
Claim 21
Dependent Claim
28 words
The process according to claim 15, wherein the 7,7,8,8-tetracyanoquinodimethane salt is a salt with a quinoline or isoquinoline which is substituted at the N-position with a hydrocarbon group.
Claim 22
Dependent Claim
20 words
The process according to claim 18, wherein the substituent at the N-position is a C 2 -C 18 alkyl group.
Claim 23
Dependent Claim
27 words
The process according to claim 19, wherein the 7,7,8,8-tetracyanoquinodimethane salt is selected from the group consisting of the N-n-propylquinolinium, N-isopropylquinolinium, N-n-hexylquinolinium, N-ethylisoquinolinium, N-n-propylisoquinolinium, N-isopropylisoquinolinium and N-n-butylisoquinolinium salts.
Claim 24
Dependent Claim
23 words
The process according to claim 19, wherein said salt is a complex salt of 7,7,8,8-tetracyanoquinodimethane and an N(C 2 -C 18 )alkyl isoquinoline.
Claim 25
Dependent Claim
24 words
The process according to claim 21, wherein the molar proportion between the 7,7,8,8-tetracyanoquinodimethane and the N(C 2 -C 18 ) alkylisoquinolinium is about 2:1.
Claim 26
Dependent Claim
56 words
A process for forming a solid electrolyte suitable for use in a solid electrolyte capacitor, comprising solidifying a 7,7,8,8-tetracyanoquinodimethane salt from the liquid state by cooling, said salt being so stable in the liquid state as not substantially decomposing for a period of time sufficient to allow contact with and attachment to an oxide film-forming metal.
Claim 27
Dependent Claim
56 words
A process for forming a solid electrolyte suitable for use in a solid electrolyte capacitor, comprising solidifying a 7,7,8,8-tetracyanoquinodimethane salt from the liquid state by cooling, said salt being so stable in the liquid state as not substantially decomposing for a period of time sufficient to allow contact with and attachment to an oxide film-forming metal.
References Cited (Backward Citations)
US3872358A
Cited
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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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |