US4259409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroless plating process for glass or ceramic bodies and product
Assignee: Ses Inc
•
Filing: 1980-03-06
•
Granted: 1981-03-31
•
Expires: 2000-03-06
Abstract
Abstract Strongly adherent layers of electroless metals on glass or ceramic substrates are obtained by first applying a film of an alkali metal silicate solution containing dissolved therein a catalytically effective amount of nickel, palladium or platinum to the substrate, drying and firing the film onto the substrate and electroless plating the coated substrate.
Inventors
- 👤 Anthony F. Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:10
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/1851; C23C18/1872; C23C18/1875; C23C18/1882; C23C18/1862; C23C18/1865; C23C18/1879; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
109 words
A process for producing an adherent layer of electroless metal on a glass or ceramic substrate which comprises: (a) applying to the substrate at least one coat of an alkali metal silicate solution containing dissolved therein an amount of metal salt selected from nickel, palladium or platinum salts which upon reduction is catalytically effective for activating the deposition of metal from an electroless plating bath (b) drying the coated substrate; (c) heating the coated substrate at a temperature ranging between about 150° C. to about 500° C.; and (d) electrolessly plating the resultant silicate coated substrate using an electroless plating bath having a pH of less than about 10.5.
Claim 2
Dependent Claim
109 words
A process for producing an adherent layer of electroless metal on a glass or ceramic substrate which comprises: (a) applying to the substrate at least one coat of an alkali metal silicate solution containing dissolved therein an amount of metal salt selected from nickel, palladium or platinum salts which upon reduction is catalytically effective for activating the deposition of metal from an electroless plating bath (b) drying the coated substrate; (c) heating the coated substrate at a temperature ranging between about 150° C. to about 500° C.; and (d) electrolessly plating the resultant silicate coated substrate using an electroless plating bath having a pH of less than about 10.5.
Claim 3
Dependent Claim
39 words
The process of claim 1 wherein the silicate solution contains from about 1 to about 85 percent by weight of its silica content in the form of coloidal silica and has a pH between about 10 and about 11.
Claim 4
Dependent Claim
46 words
The process of claim 2 wherein the silicate solution contains between about 5 to about 85 grams/l of silica, and a mole ratio of alkali metal to silica of from about 1:1 to about 22:1 and from about 0.001 to about 0.06 moles/l of metal salts.
Claim 5
Dependent Claim
47 words
The process of claim 3 wherein the silicate solution contains between about 25 to about 50 gms/l of silica, a mole ratio of alkali metal to silica of from about 1.5:1 to about 5:1 and from about 0.01 to about 0.02 moles per liter of metal salts.
Claim 6
Dependent Claim
18 words
The process of claim 4 wherein the metal salt is selected from nickel, palladium salts, or mixtures thereof.
Claim 7
Dependent Claim
13 words
The process of claim 5 wherein the metal salt is a palladium salt.
Claim 8
Dependent Claim
17 words
The process of claim 6 wherein the palladium salt is palladium chloride, palladium bromide or mixtures thereof.
Claim 9
Dependent Claim
25 words
The process of claim 7 wherein the applied coat of silicate solution after drying has a thickness ranging from about 1500 to about 3000 A.
Claim 10
Dependent Claim
25 words
The process of claim 1 wherein the applied coat of silicate solution after drying has a thickness ranging from about 1500 to about 3000 A.
Claim 11
Dependent Claim
22 words
The process of claim 1 wherein the coated substrate is heated at a temperature ranging between about 200° to about 300° C.
Claim 12
Dependent Claim
27 words
The process of claim 1 wherein the electroless plated material is heated to a temperature ranging from about 150° to about 500° C., cooled and subsequently electroplated.
Claim 13
Dependent Claim
21 words
A product as prepared by the process of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11.
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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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |