Patent US4556598A successfully refreshed from Google Patents.
US4556598A
Expired / Lapsed
US
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Porcelain tape for producing porcelainized metal substrates
Assignee: CTS Corp
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Filing: 1983-06-16
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Granted: 1985-12-03
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Expires: 2003-06-16
Abstract
Abstract A flexible porcelain tape (10) is manufactured for application to a metal substrate (50) to produce a porcelainized metal substrate (60, 90, 92). The porcelain tape (10) provides an insulative layer (102) upon which can be applied electrical circuits (110) comprising conductive paths (112) and resistors (116), either before or after the porcelain tape (10) is fired. The porcelain tape comprises glass frit (12) blended with a vehicle (11), with volatile gases removed to effect a predetermined viscosity. The mixture (14) is applied evenly to a flexible plastic carrier (16) and dried. The tape (10) may be rolled up and stored until needed, whereupon the flexible carrier (16) is peeled away either before or after the porcelain mixture layer (18) is cut to desired size and configuration. Single or multiple layers of the mixture layer (18) can be disposed upon a metal substrate (50), the combination laminated, and then fired. The resulting single or multiple layer porcelainized metal substrate (60, 90, 92 ) provides an insulated aluminum, steel, or other metal substrate for supporting electrical circuits thereon.
Inventors
- 👤 Terry R. Bloom
- 👤 John F. Nespor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:46
CPC Classifications
H; H10; H10W; H10W99/00; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/053; H10W70/00; H10W70/60; H10W70/67; H10W70/68; H10W70/6875; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A porcelainized metal substrate, comprising an insulative glass layer bonded to said metal substrate, said insulative glass layer and metal substrate comprising the conjoint product of a mixture of glass frit and vehicle dried on flexible carrier tape, the mixture removed from said carrier tape, and adhered to said metal substrate by heated pressing, said metal substrate and insulative glass layer being the conjoint reaction product of firing said mixture and substrate to melt and bond said mixture to said substrate subsequently to said pressing.
Claim 2
Dependent Claim
85 words
A porcelainized metal substrate, comprising an insulative glass layer bonded to said metal substrate, said insulative glass layer and metal substrate comprising the conjoint product of a mixture of glass frit and vehicle dried on flexible carrier tape, the mixture removed from said carrier tape, and adhered to said metal substrate by heated pressing, said metal substrate and insulative glass layer being the conjoint reaction product of firing said mixture and substrate to melt and bond said mixture to said substrate subsequently to said pressing.
Claim 3
Dependent Claim
25 words
The porcelainized metal substrate in accordance with claim 1, wherein the metal substrate comprises an aluminum substrate and said firing occurs at approximately 520° C.
Claim 4
Dependent Claim
25 words
The porcelainized metal substrate in accordance with claim 1, wherein said metal substrate comprises a steel substrate and said firing occurs at approximately 790° C.
Claim 5
Dependent Claim
59 words
The porcelainized metal substrate in accordance with claim 1, further comprising another mixture layer wherein said insulative glass layer and substrate comprise the conjoint reaction product of at least two layers of mixture removed from said carrier means and disposed one upon the other, heat pressed with said metal substrate, and the mixture layers and metal substrate subsequently fired.
Claim 6
Dependent Claim
116 words
A procelainized metal substrate supporting an electrical circuit thereon, comprising an insulative glass layer bonded to said metal substrate, said insulative glass layer and metal substrate comprising the conjoint product of a mixture of glass frit and vehicle dried on flexible carrier tape, the mixture removed from said carrier tape and adhered to said metal substrate by heated pressing, said electrical circuit being the product of disposing conductive and resistive patterns on said mixture layer subsequently to said heated pressing, and said metal substrate, insulative glass layer, and electrical circuit being the conjoint reaction product of firing said mixture, substrate, and electrical circuit to melt and bond said mixture to said substrate subsequently to said pressing.
Claim 7
Dependent Claim
116 words
A procelainized metal substrate supporting an electrical circuit thereon, comprising an insulative glass layer bonded to said metal substrate, said insulative glass layer and metal substrate comprising the conjoint product of a mixture of glass frit and vehicle dried on flexible carrier tape, the mixture removed from said carrier tape and adhered to said metal substrate by heated pressing, said electrical circuit being the product of disposing conductive and resistive patterns on said mixture layer subsequently to said heated pressing, and said metal substrate, insulative glass layer, and electrical circuit being the conjoint reaction product of firing said mixture, substrate, and electrical circuit to melt and bond said mixture to said substrate subsequently to said pressing.
Claim 8
Dependent Claim
35 words
The porcelainized metal substrate with electrical circuit in accordance with claim 3, wherein said insulative glass layer comprises the product of at least two layers of mixture adhered to the metal substrate by heated pressing.
Claim 9
Dependent Claim
35 words
The porcelainized metal substrate with electrical circuit in accordance with claim 3, wherein said insulative glass layer comprises the product of at least two layers of mixture adhered to the metal substrate by heated pressing.
Claim 10
Dependent Claim
79 words
A procelainized metal substrate supporting an electrical circuit thereon, comprising an insulative glass layer bonded to said metal substrate, said insulative glass layer and metal substrate comprising the conjoint product of a mixture of glass frit and vehicle dried on flexible carrier tape, the mixture removed from said carrier tape and adhered to said metal substrate by heated pressing, and said electrical circuit being the product of disposing conductive and resistive patterns on said porcelain subsequently to said firing.
Claim 11
Dependent Claim
79 words
A procelainized metal substrate supporting an electrical circuit thereon, comprising an insulative glass layer bonded to said metal substrate, said insulative glass layer and metal substrate comprising the conjoint product of a mixture of glass frit and vehicle dried on flexible carrier tape, the mixture removed from said carrier tape and adhered to said metal substrate by heated pressing, and said electrical circuit being the product of disposing conductive and resistive patterns on said porcelain subsequently to said firing.
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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) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |