US4349585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold-plated electronic components and process for production thereof
Assignee: AKNGK SPARK PLUG CO Ltd
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Filing: 1981-03-27
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Granted: 1982-09-14
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Expires: 2001-03-27
Abstract
Abstract Gold-plated electronic components are disclosed, as well as a process for producing the same, wherein an alloy of nickel and cobalt or an alloy containing these elements as essential ingredients is used as an undercoat for the gold-plated layer.
Inventors
- 👤 Teruyoshi Nagashima
- 👤 Akio Takami
- 👤 Akiyo Kasugai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:34
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/03; C; C25; C25D; C25D5/00; C25D5/10; C25D5/12; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/245; H05K3/246; H10; H10W; H10W70/00; H10W70/01; H10W70/05; H10W70/20; H10W70/24; H10W70/60; Y; Y10; Y10S; Y10S205/00; Y10S205/917; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12771; Y10T428/12861; Y10T428/12889; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
A process for producing an electronic component having a gold-plated layer applied to an undercoat layer, comprising the steps of: forming said undercoat layer on a metal surface of said electronic component as an undercoat layer for said gold-plated layer, said undercoat layer being a plated layer comprised of an alloy of cobalt and nickel, said undercoat layer being formed from an alloy plating bath containing cobalt and nickel; adding, simultaneously, to said bath, a supplemental solution comprising nickel and cobalt in a lower nickel/cobalt ratio than that in said bath; and treating said formed undercoat layer in a non-oxidizing atmosphere at a temperature of about 700° C. or more and forming a gold layer on said undercoat layer.
Claim 2
Dependent Claim
119 words
A process for producing an electronic component having a gold-plated layer applied to an undercoat layer, comprising the steps of: forming said undercoat layer on a metal surface of said electronic component as an undercoat layer for said gold-plated layer, said undercoat layer being a plated layer comprised of an alloy of cobalt and nickel, said undercoat layer being formed from an alloy plating bath containing cobalt and nickel; adding, simultaneously, to said bath, a supplemental solution comprising nickel and cobalt in a lower nickel/cobalt ratio than that in said bath; and treating said formed undercoat layer in a non-oxidizing atmosphere at a temperature of about 700° C. or more and forming a gold layer on said undercoat layer.
Claim 3
Dependent Claim
33 words
A process for producing an electronic component having a gold-plated layer applied to an undercoat layer, as claimed in claim 1, wherein said cobalt and nickel comprise the main ingredient of said bath.
Claim 4
Dependent Claim
45 words
A process for producing an electronic component having a gold-plated layer applied to an undercoat layer, as claimed in claim 1, wherein said treating of said formed undercoat layer in said non-oxidizing atmosphere is conducted at a temperature of between 700° C. to 1000° C.
Claim 5
Dependent Claim
33 words
A process for producing an electronic component having a gold-plated layer applied to an undercoat layer, as claimed in claim 1, wherein said bath has a cobalt-to-nickel atomic ratio of 0.01 to 0.3.
Claim 6
Dependent Claim
30 words
A process for producing an electronic component having a gold-plated layer applied to an undercoat layer, as claimed in claim 4, wherein said cobalt-to-nickel ratio is from 0.03 to 0.15.
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) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |