US3751289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing surfaces for electroplating
Assignee: M&T HARSHAW
•
Filing: 1971-08-20
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Granted: 1973-08-07
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Expires: 1991-08-20
Abstract
Abstract This invention relates to adherent copper films formed by immersion, or electrolytically on metallic objects from an aqueous solution of (1) a nonoxidizing acid, (2) a copper salt of a nonoxidizing acid, and (3) a polyether exhibiting at least 5 ether oxygen atoms per molecule; to processes for coating said films; and to compositions for the deposition of said adherent copper films.
Inventors
- 👤 D Arcilesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:03
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C25D3/00; C25D3/02; C25D3/38; H; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/244
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
12 words
The process of claim 1 wherein said non-oxidizing acid is sulfuric acid.
Claim 2
Dependent Claim
12 words
The process of claim 1 wherein said non-oxidizing acid is fluoboric acid.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said copper salt is copper sulfate.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said copper salt is copper fluoborate.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein said copper salt is a copper phosphate.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein said polyether is polyethylene glycol.
Claim 7
Dependent Claim
14 words
The process of claim 7 wherein said polyethylene glycol is of the structure H(OC2H4)136OH.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein said polyether is ethoxylated propoxylated lauryl alcohol.
Claim 9
Dependent Claim
16 words
The process of claim 9 wherein said ethoxylateD propoxylated lauryl alcohol is of the structure CH3(CH2)11(OC2H4)15(OC3H6)3OH.
Claim 10
Dependent Claim
12 words
The process of claim 1 wherein said polyether is ethoxylated lauryl alcohol.
Claim 11
Dependent Claim
13 words
The process of claim 1 wherein said polyether is nonyl phenoxy polyoxyethylene ethanol.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein said copper film is an immersion coating.
Claim 13
Dependent Claim
13 words
The process of claim 1 wherein said metal surface is a ferrous metal.
Claim 14
Dependent Claim
81 words
A composition for the deposition of a thin coating of copper from an aqueous acidic solution consisting essentially of 0.01 grams per liter to 10 grams per liter of a copper II salt selected from the group consisting of copper sulfate, copper fluoborate and copper phosphate, 0.1 grams per liter to 500 grams per liter of a nonoxidizing acid, and 0.1 grams per liter to 100 grams per liter of a polyether containing at least 5 ether oxygen atoms per molecule.
Claim 15
Dependent Claim
12 words
The composition of claim 15 wherein said nonoxidizing acid is sulfuric acid.
Claim 16
Dependent Claim
12 words
The composition of claim 15 wherein said nonoxidizing acid is fluoboric acid.
Claim 17
Dependent Claim
12 words
The composition of claim 15 wherein said copper salt is copper sulfate.
Claim 18
Dependent Claim
12 words
The composition of claim 15 wherein said copper salt is copper fluoborate.
Claim 19
Dependent Claim
12 words
The composition of claim 15 wherein said copper salt is copper phosphate.
Claim 20
Dependent Claim
11 words
The composition of claim 15 wherein said polyether is polyethylene glycol.
Claim 21
Dependent Claim
14 words
The composition of claim 21 wherein said polyethylene glycol is of the structure H(OC2H4)136OH.
Claim 22
Dependent Claim
13 words
The composition of claim 15 wherein said polyether is ethoxylated propoxylated lauryl alcohol.
Claim 23
Dependent Claim
16 words
The composition of claim 23 wherein said ethoxylated propoxylated lauryl alcohol is of the structure CH3(CH2)11(OC2H4)15(OC3H6)3OH.
Claim 24
Dependent Claim
12 words
The composition of claim 15 wherein said polyether is ethoxylated lauryl alcohol.
Claim 25
Dependent Claim
13 words
The composition of claim 15 wherein said polyether is nonyl phenoxy polyoxyethylene ethanol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |