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Patent US4622110A successfully refreshed from Google Patents.
US4622110A
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Palladium plating
Assignee: Shipley Co Inc
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Filing: 1985-04-17
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Granted: 1986-11-11
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Expires: 2005-04-17
Abstract
Abstract An electroplating bath composition is disclosed which permits high speed palladium deposition. The bath comprises carbonate or phosphate anion in a critical amount and is otherwise additive free. A pH of 7-9 is used.
Inventors
- 👤 James L. Martin
- 👤 John E. McCaskie
- 👤 Michael P. Toben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:05
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/08; C25D3/00; C25D3/02; C25D3/50; C25D3/52; C25D5/04; C25D5/627
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
67 words
An additive-free fast precipitating electrolyte bath for precipitating palladium layers comprising at least about 10 g/l palladium metal in the form of a palladium tetra-amino complex and a phosphate compound which provides an amount of phosphate anion which would be equivalent to that provided by between about 20 g/l and about 80 g/l of ammonium phosphate; said bath having a pH of between about 7 and 9.
Claim 2
Dependent Claim
67 words
An additive-free fast precipitating electrolyte bath for precipitating palladium layers comprising at least about 10 g/l palladium metal in the form of a palladium tetra-amino complex and a phosphate compound which provides an amount of phosphate anion which would be equivalent to that provided by between about 20 g/l and about 80 g/l of ammonium phosphate; said bath having a pH of between about 7 and 9.
Claim 3
Dependent Claim
17 words
The bath of claim 1 wherein the phosphate compound is supplied by any bath soluble phosphate compound.
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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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |