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US4699697A
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High-purity palladium-nickel alloy plating solution and process
Assignee: EEJA Ltd
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Filing: 1985-05-23
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Granted: 1987-10-13
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Expires: 2005-05-23
Abstract
Abstract PCT No. PCT/JP85/00285 Sec. 371 Date Jan. 17, 1986 Sec. 102(e) Date Jan. 17, 1986 PCT Filed May 23, 1985 PCT Pub. No. WO85/05381 PCT Pub. Date Dec. 5, 1985.The present invention relates to a high-purity palladium-nickel alloy plating, and particularly to a high-purity palladium-nickel alloy plating solution and process suitable as plating for electronic parts, said plating solution and process producing a deposit having a nickel content of 1 to 15%, an article plated with said alloy, and an article plated with said alloy and plated further with gold or a gold alloy.
Inventors
- 👤 Kazuhiro Higuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:40
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/10; C25D3/00; C25D3/02; C25D3/56; C25D3/567; C25D5/627; H; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/244; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12875
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
67 words
A high-purity palladium-nickel alloy plating solution comprising at least 5 g/l of palladium added in the form of palladous ammine chloride, 0.5 to 2.0 g/l of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate.
Claim 2
Dependent Claim
67 words
A high-purity palladium-nickel alloy plating solution comprising at least 5 g/l of palladium added in the form of palladous ammine chloride, 0.5 to 2.0 g/l of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate.
Claim 3
Dependent Claim
122 words
A process for plating with a high-purity palladium-nickel alloy which comprises: electroplating a substrate using, as a plating bath, a high-purity palladium-nickel alloy plating solution containing at least 5 g/l of palladium added in the form of palladous ammine chloride, 0.5 to 2.0 g/l of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate for supplying sulfate ions to the plating solution, said plating solution having a pH of 6 to 8, so that the nickel content of the deposit will be in the range of from 1 to 15%.
Claim 4
Dependent Claim
122 words
A process for plating with a high-purity palladium-nickel alloy which comprises: electroplating a substrate using, as a plating bath, a high-purity palladium-nickel alloy plating solution containing at least 5 g/l of palladium added in the form of palladous ammine chloride, 0.5 to 2.0 g/l of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate for supplying sulfate ions to the plating solution, said plating solution having a pH of 6 to 8, so that the nickel content of the deposit will be in the range of from 1 to 15%.
Claim 5
Dependent Claim
66 words
A high-purity palladium-nickel alloy plating solution comprising at least 5 g/l of palladium in the form of palladous ammine chloride, 0.5 to 1 g/l of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate.
Claim 6
Dependent Claim
66 words
A high-purity palladium-nickel alloy plating solution comprising at least 5 g/l of palladium in the form of palladous ammine chloride, 0.5 to 1 g/l of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate.
Claim 7
Dependent Claim
124 words
A process for plating with a high-purity palladium-nickel alloy which comprises: electroplating a substrate using, as a plating bath, a high-purity palladium-nickel alloy plating solution containing at least 5 g/l of palladium added in the form of palladous ammine chloride, from 0.5 to 1.0 g/ of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate for supplying sulfate ions to the plating solution, said plating solution having a pH of 6 to 8, so that the nickel content of the plated deposit will be in the range of from 1 to 15%.
Claim 8
Dependent Claim
124 words
A process for plating with a high-purity palladium-nickel alloy which comprises: electroplating a substrate using, as a plating bath, a high-purity palladium-nickel alloy plating solution containing at least 5 g/l of palladium added in the form of palladous ammine chloride, from 0.5 to 1.0 g/ of nickel, from 0.1 to 5 g/l of sodium formylbenzenesulfonate, from 50 to 200 g/l of at least one ammonium salt other than ammonium sulfate for imparting electrical conductivity to the plating solution and from 10 to 100 g/l of ammonium sulfate for supplying sulfate ions to the plating solution, said plating solution having a pH of 6 to 8, so that the nickel content of the plated deposit will be in the range of from 1 to 15%.
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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) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |