US5017272A
Expired / Lapsed
US
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Method for forming a conductive film on a surface of a conductive body coated with an insulating film
Assignee: Saga Sanyo Industry Co Ltd
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Filing: 1990-06-19
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Granted: 1991-05-21
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Expires: 2010-06-19
Abstract
Abstract An electrolytic polymerization method for forming a conductive film on a surface of a conductive body coated with an insulating film is disclosed. In this method, a pulse-like electrolytic current is supplied between an electrode connected with the conductive body and a counter electrode in an electrolyte containing substance for forming a conductive high-polymer film.
Inventors
- 👤 Hidenori Kamigawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:23
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025; C; C08; C08G; C08G61/00; C08G61/12; C08G63/00; C08G63/02; C08G63/12; H01G9/0029; H01G9/0036; H01G9/15; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/053; H05K3/00; H05K3/10; H05K3/18; H05K3/188
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
96 words
Electrolytic coating method for a conductive body on the surface of which an insulating film has been formed comprising the following steps (a) forming an insulating film on a surface of a conductive body, (b) dipping said conductive body and a counter electrode in an electrolyte, (c) applying a pulse-like current between said conductive body and said counter electrode through said electrolyte and said insulating film in such a manner that any negative voltage is not applied to said conductive body and (d) thereby forming a conductive high-polymer film on said insulating layer by electrolytic polymerization.
Claim 2
Dependent Claim
96 words
Electrolytic coating method for a conductive body on the surface of which an insulating film has been formed comprising the following steps (a) forming an insulating film on a surface of a conductive body, (b) dipping said conductive body and a counter electrode in an electrolyte, (c) applying a pulse-like current between said conductive body and said counter electrode through said electrolyte and said insulating film in such a manner that any negative voltage is not applied to said conductive body and (d) thereby forming a conductive high-polymer film on said insulating layer by electrolytic polymerization.
Claim 3
Dependent Claim
28 words
The method as claimed in claim 1 wherein at least one conductive substance selected from a group including pyrrole, thiophene, aniline and furan is resolved in said electrolyte.
Claim 4
Dependent Claim
28 words
The method as claimed in claim 1 or 2 wherein said pulse-like current is a current obtained by superposing a positive bias direct current on an alternating current.
Claim 5
Dependent Claim
21 words
The method as claimed in claim 1 or 2 wherein said pulse-like current is a direct current flowing periodically or intermittently.
Claim 6
Dependent Claim
37 words
The method as claimed in claim 1 or 2 further comprising a step for forming a conductive high-polymer layer on said insulating film by chemical oxidation polymerization prior to forming said conductive high-polymer film by electrolytic polymerization.
Claim 7
Dependent Claim
88 words
Method for manufacturing solid electrolytic capacitors comprising the following steps (a) forming an insulating dielectric oxide film on a surface of a valve metal, (b) dipping said valve metal and a counter electrode in an electrolyte (c) applying a pulse-like current between said valve metal and said counter electrode through said electrolyte and said insulating dielectric oxide film in such a manner that any negative voltage is not applied to said valve metal and (d) forming a conductive high-polymer layer on said dielectric oxide film by electrolytic polymerization.
Claim 8
Dependent Claim
88 words
Method for manufacturing solid electrolytic capacitors comprising the following steps (a) forming an insulating dielectric oxide film on a surface of a valve metal, (b) dipping said valve metal and a counter electrode in an electrolyte (c) applying a pulse-like current between said valve metal and said counter electrode through said electrolyte and said insulating dielectric oxide film in such a manner that any negative voltage is not applied to said valve metal and (d) forming a conductive high-polymer layer on said dielectric oxide film by electrolytic polymerization.
Claim 9
Dependent Claim
17 words
The method as claimed in claim 6 wherein said valve metal is either of aluminum and tantalum.
Claim 10
Dependent Claim
28 words
The method as claimed in claim 6 wherein at least one conductive substance selected from a group including pyrrole, thiophene, aniline and furan is resolved is said electrolyte.
Claim 11
Dependent Claim
26 words
The method as claimed in claim 6 wherein said pulse-like current is a current obtained by superposing a positive bias direct current on an alternating current.
Claim 12
Dependent Claim
20 words
The method as claimed in claim 6 wherein said pulse-like current is a current obtained by chopping an alternating current.
Claim 13
Dependent Claim
19 words
The method as claimed in claim 6 wherein said pulse-like current is a direct current flowing periodically or intermittently.
Claim 14
Independent Claim
43 words
The method as claimed in any one of the preceding claims 6 to 11 further comprising a step for forming a conductive high-polymer layer on said dielectric oxide film by chemical oxidation polymerization prior to forming said conductive high-polymer layer by electrolytic polymerization.
Claim 15
Independent Claim
31 words
The method as claimed in any one of the preceding claims 6 to 11 wherein said pulse-like current is applied to said valve metal through a lead wire connected thereto beforehand.
References Cited (Backward Citations)
US4929316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |