Patent DE449786C successfully refreshed from Google Patents.
US4048005A
Expired / Lapsed
US
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Process for producing a laminated metallic sheet
Assignee: Nitto Denko Corp
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Filing: 1975-11-10
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Granted: 1977-09-13
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Expires: 1995-11-10
Abstract
Abstract This invention provides a process for producing a heat resistant metallic laminated sheet which is composed of mutually insulated outer metallic sheets or foils and an inner binder layer sandwiched therebetween. In this process, the binder layer is a film of a heat resistant heterocyclic polymer from which volatile matter is substantially removed. The sandwiched structure composed of the outer metallic sheets and the binder film put therebetween is bonded at a temperature range above the heat distortion temperature of the binder film to form the metallic laminated sheet.
Inventors
- 👤 Keisuke Nakagome
- 👤 Toshiharu Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:32
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/18; B32B15/20; C; C09; C09J; C09J179/00; C09J179/04; C09J181/00; C09J5/00; C09J5/06; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0333; H05K1/0346; H05K3/00; H05K3/02; H05K3/022; B32B2307/00; B32B2307/30; B32B2307/306; B32B2457/00; B32B2457/08; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/07; H05K2203/0703; H05K2203/0723; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
95 words
In a process for the production of heat resistant laminated articles comprising metallic sheets or foils with a polymer binder film laminated therebetween, the improvement comprising: providing a binder film comprising a film of heat resistant heterocyclic polymer composed of polyamide imide hydantoin which exhibits no fusing point, said polymer film having an inherent viscosity greater than about 0.4, and a volatile matter content below about 5.0% by weight, and laminating said metallic sheets or foils with said binder film therebetween under pressure and at temperature above the heat distortion temperature of said binder film.
Claim 2
Dependent Claim
95 words
In a process for the production of heat resistant laminated articles comprising metallic sheets or foils with a polymer binder film laminated therebetween, the improvement comprising: providing a binder film comprising a film of heat resistant heterocyclic polymer composed of polyamide imide hydantoin which exhibits no fusing point, said polymer film having an inherent viscosity greater than about 0.4, and a volatile matter content below about 5.0% by weight, and laminating said metallic sheets or foils with said binder film therebetween under pressure and at temperature above the heat distortion temperature of said binder film.
Claim 3
Dependent Claim
41 words
A process for producing a heat resistant metallic laminated article according to claim 1, in which the metallic sheets or foils comprise at least one anodized aluminum sheet having a thickness in the range of from about 0.5 to about 3.0mm.
Claim 4
Dependent Claim
17 words
The process according to claim 2, wherein said aluminum sheet or foil is preliminarily plated with nickel.
Claim 5
Dependent Claim
43 words
A process for producing a heat resistant metallic laminated article according to claim 1, in which the metallic sheets or foils comprise at least one copper sheet or foil having a thickness in the range of from about 10 to about 100 μ.
Claim 6
Dependent Claim
16 words
The process of claim 4, wherein said copper sheet or foil is preliminarily plated with nickel.
Claim 7
Dependent Claim
43 words
A process for producing a heat resistant metallic laminated article according to claim 1, in which at least one surface of the laminated article is formed by an iron sheet having a thickness in the range of from about 0.5 to about 3.0mm.
Claim 8
Dependent Claim
33 words
A process for producing a heat resistant metallic laminated article according to claim 1, in which a binder film is preliminarily adhered to at least one surface of each metallic sheet or foil.
Claim 9
Dependent Claim
58 words
A process for producing a heat resistant metallic laminated article according to claim 1, in which a binder film is preliminarily adhered to at least one surface of at least one metallic sheet or foil, and at least one of said binder film coated sheets or foils is laminated with at least one uncoated metallic sheet or foil.
Claim 10
Dependent Claim
32 words
A process for producing a heat resistant metallic laminated article according to claim 1, in which a discrete binder film is produced preliminarily and is laminated between uncoated metallic sheets or foils.
Claim 11
Dependent Claim
38 words
A process for producing a substrate for use in the manufacture of printed circuit boards further comprising chemically etching at least a part of the exposed metallic surface of a metallic laminated article produced according to claim 1.
Claim 12
Dependent Claim
94 words
In a process for the production of heat resistant laminated articles comprising metallic sheets or foils with a polymer binder film laminated therebetween, the improvement comprising: providing a binder film comprising a film of heat resistant heterocyclic polymer composed of polyhydantoin which exhibits no fusing point, said polymer film having an inherent viscosity greater than about 0.4, and a volatile matter content below about 5.0% by weight, and laminating said metallic sheets or foils with said binder film therebetween under pressure and at a temperature above the heat distortion temperature of said binder film.
Claim 13
Dependent Claim
94 words
In a process for the production of heat resistant laminated articles comprising metallic sheets or foils with a polymer binder film laminated therebetween, the improvement comprising: providing a binder film comprising a film of heat resistant heterocyclic polymer composed of polyhydantoin which exhibits no fusing point, said polymer film having an inherent viscosity greater than about 0.4, and a volatile matter content below about 5.0% by weight, and laminating said metallic sheets or foils with said binder film therebetween under pressure and at a temperature above the heat distortion temperature of said binder film.
Claim 14
Dependent Claim
41 words
A process for producing a heat resistant metallic laminated article according to claim 11, in which the metallic sheets or foils comprise at least one anodized aluminum sheet having a thickness in the range of from about 0.5 to about 3.0mm.
Claim 15
Dependent Claim
17 words
The process according, to claim 12, wherein said aluminum sheet or foil is preliminarily plated with nickel.
Claim 16
Dependent Claim
42 words
A process for producing a heat resistant metallic liminated article according to claim 11, in which the metallic sheets or foils comprise at least one copper sheet or foil having a thickness in the range of from about 10 to about 100μ.
Claim 17
Dependent Claim
16 words
The process of claim 14, wherein said copper sheet or foil is preliminarily plated with nickel.
Claim 18
Dependent Claim
43 words
A process for producing a heat resistant metallic laminated article according to claim 11, in which at least one surface of the laminated article is formed by an iron sheet having a thickness in the range of from about 0.5 to about 3.0mm.
Claim 19
Dependent Claim
33 words
A process for producing a heat resistant metallic laminated article according to claim 11, in which a binder film is preliminarily adhered to at least one surface of each metallic sheet or foil.
Claim 20
Dependent Claim
58 words
A process for producing a heat resistant metallic laminated article according to claim 11, in which a binder film is preliminarily adhered to at least one surface of at least one metallic sheet or foil, and at least one of said binder film coated sheets or foils is laminated with at least one uncoated metallic sheet or foil.
Claim 21
Dependent Claim
32 words
A process for producing a heat resistant metallic laminated article according to claim 11, in which a discrete binder film is produced preliminarily and is laminated between uncoated metallic sheets or foils.
Claim 22
Dependent Claim
38 words
A process for producing a substrate for use in the manufacture of printed circuit boards further comprising chemically etching at least a part of the exposed metallic surface of a metallic laminated article produced according to claim 11.
References Cited (Backward Citations)
US3533879A
Cited
US3454445A
Cited
US3640969A
Cited
US3582458A
Cited
US3678005A
Cited
US3803075A
Cited
US3839354A
Cited
US3714131A
Cited
US3856559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |