Patent US4420509A successfully refreshed from Google Patents.
US4420509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper-clad polyester-glass fiber laminates
Assignee: Congress Financial Corp Southwest
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Filing: 1981-08-11
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Granted: 1983-12-13
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Expires: 2001-08-11
Abstract
Abstract A metal foil laminate including at least one sheet of metal foil directly bonded to one face of a sheet of glass fiber reinforced polyester resin, and a continuous process for preparing such laminates.
Inventors
- 👤 David Barrell
- 👤 Donald E. Kennedy
- 👤 James J. Marino, Jr.
- 👤 Donald C. Rollen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; H; H05; H05K; H05K3/00; H05K3/02; H05K3/022; B32B2311/00; B32B2311/12; B32B2315/00; B32B2315/08; B32B2315/085; B32B2367/00; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; H05K1/0353; H05K1/0366; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/24995; Y10T428/249951; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T428/31529; Y10T428/31551; Y10T428/31616; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
91 words
A continuous process for preparing a copper foil laminate having at least one sheet of copper foil directly bonded to a face of a sheet of a glass fiber reinforced linear polyester resin, comprising: applying a coating of a linear polyester resin to a first copper foil, distributing glass fiber filaments on said linear polyester resin coating, heating said glass fiber containing linear polyester resin coated copper foil to partially gel said resin, applying pressure to said partially gelled linear polyester resin coated copper foil, and curing said linear polyester resin.
Claim 2
Dependent Claim
91 words
A continuous process for preparing a copper foil laminate having at least one sheet of copper foil directly bonded to a face of a sheet of a glass fiber reinforced linear polyester resin, comprising: applying a coating of a linear polyester resin to a first copper foil, distributing glass fiber filaments on said linear polyester resin coating, heating said glass fiber containing linear polyester resin coated copper foil to partially gel said resin, applying pressure to said partially gelled linear polyester resin coated copper foil, and curing said linear polyester resin.
Claim 3
Dependent Claim
48 words
A continuous process for preparing a copper foil laminate as set forth in claim 1, including applying a second copper foil to said partially gelled linear polyester resin coating on said first copper foil immediately after heating said glass fiber containing linear polyester resin coated first copper foil.
Claim 4
Dependent Claim
41 words
A continuous process for preparing a copper foil laminate as set forth in claim 1, wherein said copper foil laminate comprises one sheet of metal foil directly bonded to one face of a sheet of glass fiber reinforced linear polyester resin.
Claim 5
Dependent Claim
36 words
A continuous process for preparing a copper foil laminate as set forth in claim 1, wherein said sheet of cured glass fiber reinforced linear polyester resin is flexible comprises phthalic anhydride, maleic anhydride and diethylene glycol.
Claim 6
Dependent Claim
28 words
A continuous process for preparing a copper foil laminate as set forth in claim 4, wherein said copper foil has a weight of one ounce per square foot.
Claim 7
Dependent Claim
28 words
A continuous process for preparing a copper foil laminate as set forth in claim 1, wherein said sheet of cured glass fiber reinforced linear polyester resin is rigid.
Claim 8
Dependent Claim
28 words
A continuous process for preparing a copper foil laminate as set forth in claim 6, wherein said copper foil has a weight of one ounce per square foot.
Claim 9
Dependent Claim
31 words
A continuous process for preparing a copper foil laminate as set forth in claim 6, wherein said linear polyester resin comprises phthalic anhydride, maleic anhydride, propylene glycol, ethylene glycol, and styrene.
Claim 10
Dependent Claim
32 words
A continuous process for preparing a copper foil laminate as set forth in claim 6, wherein said linear polyester resin includes a catalyst selected from the group consisting of peroxides and hydroperoxides.
Claim 11
Dependent Claim
21 words
A continuous process for preparing a copper foil laminate as set forth in claim 9, wherein said catalyst is a hydroperoxide.
Claim 12
Dependent Claim
21 words
A continuous process for preparing a copper foil laminate as set forth in claim 10, wherein said catalyst is cumene hydroperoxide.
Claim 13
Dependent Claim
40 words
A continuous process for preparing a copper foil laminate as set forth in claim 6, wherein said sheet of cured glass fiber reinforced linear polyester resin includes about 10% to about 30% by weight, compared to the resin, glass fiber.
Claim 14
Dependent Claim
27 words
A continuous process for preparing a copper foil laminate as set forth in claim 12, wherein said glass fiber is randomly distributed in said linear polyester resin.
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) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |