Patent US5528000A successfully refreshed from Google Patents.
US5528000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating process and composition
Assignee: DuPont Electronic Materials International LLC
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Filing: 1995-02-28
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Granted: 1996-06-18
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Expires: 2015-02-28
Abstract
Abstract A process for electroplating a nonconducting substrate comprising formation of a film of a conductive polymer on the surface of a nonconducting substrate and electrolytic deposition of metal thereover. The conductive film is formed by deposition of the conductive polymer onto said surface from an aqueous suspension of said polymer.
Inventors
- 👤 George R. Allardyce
- 👤 Kevin Bass
- 👤 John E. Graves
- 👤 James G. Shelnut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:37
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/40; H05K3/42; H05K3/423; H05K3/424; C; C25; C25D; C25D5/00; C25D5/54; C25D5/56
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A printed circuit board having metallized through-holes providing electrical contact from one side of the board to the other, said metallized through-holes having a layer of discrete particles of a conductive polymer adsorbed from a suspension of the same disposed between the circuit board base material and the metallized surface of the through-holes.
Claim 2
Dependent Claim
53 words
A printed circuit board having metallized through-holes providing electrical contact from one side of the board to the other, said metallized through-holes having a layer of discrete particles of a conductive polymer adsorbed from a suspension of the same disposed between the circuit board base material and the metallized surface of the through-holes.
Claim 3
Dependent Claim
23 words
The circuit board of claim 1 where the conductive polymer is selected from the group consisting essentially of polyacetylenes, polypyrroles, polyanilines and polythiophenes.
Claim 4
Dependent Claim
12 words
The method of claim 1 where the conductive polymer is a polypyrrole.
Claim 5
Dependent Claim
50 words
An article of manufacture comprising a dielectric substrate having at least a portion of its surface coated with a metal plate, said dielectric substrate and said metal plate having an intermediate layer therebetween of discrete particles of a conductive polymer adsorbed on the substrate from a suspension of the same.
Claim 6
Dependent Claim
50 words
An article of manufacture comprising a dielectric substrate having at least a portion of its surface coated with a metal plate, said dielectric substrate and said metal plate having an intermediate layer therebetween of discrete particles of a conductive polymer adsorbed on the substrate from a suspension of the same.
Claim 7
Dependent Claim
22 words
The article of claim 4 where the conductive polymer is selected from the group consisting essentially of polyacetylenes, polypyrroles, polyanilines and polythiophenes.
Claim 8
Dependent Claim
12 words
The article of claim 4 where the conductive polymer is a polypyrrole.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-18 | 1999-12-18 | 2000-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-18 | 2003-12-18 | 2004-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-18 | 2007-12-18 | 2008-06-18 | $7700.00 | Window Closed / Lapsed |