US3644166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxide-free multilayer copper clad laminate
Assignee: Westinghouse Electric Corp
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Filing: 1968-03-28
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Granted: 1972-02-22
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Expires: 1988-03-28
Abstract
Abstract A copper-clad laminate is made with a copper foil, an intermediate thin film of an amino-silane applied over the copper surface and layers of a resin impregnated support material. The amino-silane film uniformly covers the copper surface and prevents oxide transfer to the support material.
Inventors
- 👤 Smith A Gause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:44
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; C09D183/08; H; H05; H05K; H05K3/00; H05K3/38; H05K3/389; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0129; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/03; H05K2203/0315; H05K3/382; Y; Y10; Y10S; Y10S273/00; Y10S273/29; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/133; Y10T442/138; Y10T442/14; Y10T442/184; Y10T442/191
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
15 words
The laminate of claim 1 wherein the copper foil has a rough bondable treated surface.
Claim 2
Dependent Claim
48 words
The laminate of claim 2 in which the support member comprises an organic resin selected from the group consisting of glycidyl polyether, polyimide and polyamide-imide resins, and a backing sheet of fibers, selected from the group consisting of asbestos, glass, polyacrylate and polyester fibers is impregnated with resin.
Claim 3
Dependent Claim
20 words
The laminate of claim 3 wherein the support member is open weave glass cloth impregnated with a glycidyl polyether resin.
Claim 4
Dependent Claim
12 words
The laminate of claim 2 wherein the intermediate thin film is gamma-aminopropyltriethoxysilane.
Claim 5
Dependent Claim
79 words
A copper clad laminate consisting essentially of a copper foil having a rough, bondable, treated surface with a copper oxide, porous grain structure, an intermediate thin oxygen impermeable film uniformly covering the grain structure and filling the pores of the bondable treated copper foil surface, said film consisting of an amino substituted organo-silane, and a resin impregnated, fibrous support member contacting the oxygen impermeable film, said film preventing oxide transfer from the foil to the resin impregnated fibrous support.
Claim 6
Dependent Claim
49 words
The laminate of claim 6 in which the suPport member comprises an organic resin selected from the group consisting of glycidyl polyether, polyimide, and polyamide-imide resins, and a backing sheet of fibers, selected from the group consisting of asbestos, glass, polyacrylate, and polyester fibers, said fibers impregnated with resin.
Claim 7
Dependent Claim
17 words
The laminate of claim 7 wherein the intermediate oxygen impermeable thin film is a gamma-aminopropyltriethoxy silane film.
Claim 8
Dependent Claim
17 words
The laminate of claim 7 wherein the oxygen impermeable film is up to about 1.5 microns thick.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |