US4662944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for sensitizing articles for metallization
Assignee: AMP-AKZO Corp A CORP OF
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Filing: 1976-12-22
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Granted: 1987-05-05
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Expires: 1996-12-22
Abstract
Abstract Non-metallic articles are sensitized for deposition of adherent metal from electroless metal solutions in contact therewith by treatment with a first medium including cuprous ions and stannous ions thereby absorbing on the surface in situ at least said cuprous ions; thereafter treating the surface with a second medium to decrease the solubility of the cuprous ions and/or simultaneously removing the excess; and simultaneously or subsequently, if necessary, treating the surface with one or more agents to transfer said cuprous ions into a catalytically-active state.
Inventors
- 👤 Francis J. Nuzzi
- 👤 Edward J. Leech
- 👤 Richard W. Charm
- 👤 Joseph Polichette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:56
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1603; C23C18/1605; C23C18/18; C23C18/20; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/208; C23C18/28; C23C18/285; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
42 words
A solution useful in the priming of dielectric substrates in preparation for electroless plating comprising stannous and cuprous ions in aqueous media, said stannous to cuprous ions being present in said aqueous media in a molar ratio of about 1.3 to 1.
Claim 2
Dependent Claim
42 words
A solution useful in the priming of dielectric substrates in preparation for electroless plating comprising stannous and cuprous ions in aqueous media, said stannous to cuprous ions being present in said aqueous media in a molar ratio of about 1.3 to 1.
Claim 3
Dependent Claim
11 words
The solution of claim 1, wherein said solution includes hydrochloric acid.
References Cited (Backward Citations)
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US3725108A
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US3682671A
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US3925578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |