US4383003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer lamination of copper thin sheets and films, method and product
Assignee: General Electric Co
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Filing: 1980-09-22
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Granted: 1983-05-10
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Expires: 2000-09-22
Abstract
Abstract A copper-clad laminate having special utility in the production of high resolution printed circuit patterns by either subtractive or semi-additive processing is made by vapor depositing a film of zinc on a copper film on a silica-coated aluminum carrier sheet, vapor depositing a silica film on the resulting zinc-copper foil, bonding the resulting body to a substrate and then stripping the silica-coated aluminum carrier sheet from the copper-clad laminate.
Inventors
- 👤 Eric Lifshin
- 👤 Joseph D. Cargioli
- 👤 Stephen J. Schroder
- 👤 Joe Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:21
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/0005; H; H05; H05K; H05K3/00; H05K3/02; H05K3/022; H05K3/025; H05K3/38; H05K3/388; H05K2201/00; H05K2201/03; H05K2201/0302; H05K2201/0317; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/01; H05K2203/0147; H05K2203/0152; H05K3/382; H05K3/389; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549; Y10T428/12556; Y10T428/12597; Y10T428/12604; Y10T428/12611; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A metal-clad laminate comprising a substrate, a layer of copper and bonding means located between said substrate and said copper layer for bonding said substrate and copper layer together, said bonding means consisting of an ultra-thin film of zinc on said copper layer together with an ultra-thin film of oxide selected from the group consisting of aluminum oxide and silicon dioxide disposed between and in contact with said zinc film and said substrate.
Claim 2
Dependent Claim
73 words
A metal-clad laminate comprising a substrate, a layer of copper and bonding means located between said substrate and said copper layer for bonding said substrate and copper layer together, said bonding means consisting of an ultra-thin film of zinc on said copper layer together with an ultra-thin film of oxide selected from the group consisting of aluminum oxide and silicon dioxide disposed between and in contact with said zinc film and said substrate.
Claim 3
Dependent Claim
23 words
The invention of claim 1 in which the copper layer is present as vapor deposited film of thickness less than about 16 microns.
Claim 4
Dependent Claim
12 words
The invention of claim 1 in which the oxide is silicon dioxide.
Claim 5
Dependent Claim
30 words
A laminate product comprising a thin copper sheet, an ultra-thin film of zinc vapor deposited on said copper sheet and a film of silica vapor deposited on said zinc film.
Claim 6
Dependent Claim
30 words
A laminate product comprising a thin copper sheet, an ultra-thin film of zinc vapor deposited on said copper sheet and a film of silica vapor deposited on said zinc film.
Claim 7
Dependent Claim
33 words
The laminate product of claim 4 in which a portion of the surface of the zinc film between the zinc and the silica is characterized by the presence of whisker-like dendrites of zinc.
Claim 8
Dependent Claim
19 words
The invention of claim 4 in which a coating of silane coupling agent is located over the silica film.
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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) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |