Patent US5512381A successfully refreshed from Google Patents.
US5512381A
Expired / Lapsed
US
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Copper foil laminate for protecting multilayer articles
Assignee: Isola Laminate Systems Corp
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Filing: 1993-09-24
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Granted: 1996-04-30
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Expires: 2013-09-24
Abstract
Abstract A method for making multilayer laminates having at least one exposed layer of copper foil. The exposed layer of copper foil is covered with a adhesively attached protective metal sheet made of a copper prior to being laminated.
Inventors
- 👤 Jiri D. Konicek
- 👤 Donald E. Yuhas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:31
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/20; B32B7/00; B32B7/04; B32B7/12; H; H05; H05K; H05K3/00; H05K3/02; H05K3/022; H05K3/025; B32B2311/00; B32B2311/12; B32B2457/00; B32B2457/08; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/01; H05K2203/0147; H05K2203/0152; H05K2203/05; H05K2203/0502; H05K2203/0522; H05K2203/06; H05K2203/068; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431; Y10T428/12438; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/24995; Y10T428/249951; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A protected sheet of copper foil for manufacturing multilayer laminates comprising: (a) a sheet of copper foil having a thickness greater than about 8 μm and having a first face adapted for adhering to a fiber reinforced polymer layer and a second protected face to be exposed after said first face is adhered to said fiber reinforced polymer layer; (b) a protective sheet of copper having a thickness of about 8 to 250 μm covering said second copper foil face and adhesively attached thereto by a non-metallic adhesive in areas where circuit patterns are not to be developed.
Claim 2
Dependent Claim
98 words
A protected sheet of copper foil for manufacturing multilayer laminates comprising: (a) a sheet of copper foil having a thickness greater than about 8 μm and having a first face adapted for adhering to a fiber reinforced polymer layer and a second protected face to be exposed after said first face is adhered to said fiber reinforced polymer layer; (b) a protective sheet of copper having a thickness of about 8 to 250 μm covering said second copper foil face and adhesively attached thereto by a non-metallic adhesive in areas where circuit patterns are not to be developed.
References Cited (Backward Citations)
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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) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |