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US4314002A
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US
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Insulating laminates comprising alternating fiber reinforced resin layers and unreinforced resin layers
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1980-01-29
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Granted: 1982-02-02
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Expires: 2000-01-29
Abstract
Abstract This invention relates to insulating laminates which consists with several sheets of reinforcements (1) inpregnated with curable resin and layers (2) of cured resin located between each reinforcement. Metal clad laminates is also disclosed which is consisting with reinforcement (1), layers (2) of cured resin and metal foil (5) to be placed on the laminates. Each reinforcements (1) are substantially isolated by the resin layers (2).
Inventors
- 👤 Masayuki Oizumi
- 👤 Masana Goto
- 👤 Minoru Ishiki
- 👤 Shoji Uozumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:07
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/12; B32B27/00; B32B27/06; B32B27/10; B32B15/20; H; H01; H01B; H01B3/00; H01B3/18; H01B3/48; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/036; H05K1/0366; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/06; B32B2262/062; B32B2305/00; B32B2305/08; B32B2307/00; B32B2307/20; B32B2307/206; B32B2457/00; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0145; H05K2201/0166; H05K2201/0183; H05K2201/0195; H05K2201/02; H05K2201/0275; H05K2201/0284; H05K2201/0293; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T428/31551; Y10T428/31616; Y10T428/3162; Y10T428/31627; Y10T428/31678; Y10T428/31681; Y10T428/31688; Y10T428/31692; Y10T428/31699; Y10T428/31703; Y10T428/31786; Y10T428/3179; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31967; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/3415; Y10T442/3431
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
65 words
Insulating laminate for electric use consisting essentially of a plurality of cellulosic reinforced layers each fully impregnated with a thermoset resin, and unreinforced layers of a cured resin existing between and extending substantially over the surface of the reinforced layers, wherein said layers of cured resin are substantially integral with the adjacent reinforcements, which are isolated from each other by said layers of cured resin.
Claim 2
Dependent Claim
65 words
Insulating laminate for electric use consisting essentially of a plurality of cellulosic reinforced layers each fully impregnated with a thermoset resin, and unreinforced layers of a cured resin existing between and extending substantially over the surface of the reinforced layers, wherein said layers of cured resin are substantially integral with the adjacent reinforcements, which are isolated from each other by said layers of cured resin.
Claim 3
Dependent Claim
21 words
Insulating laminate as defined in claim 1 wherein an unreinforced layer of resin additionally exists on one side of the laminate.
Claim 4
Dependent Claim
23 words
Insulating laminate as defined in claim 1 or 2 wherein the laminate is clad with metal foil on one side of the laminate.
Claim 5
Dependent Claim
16 words
Insulating laminate as defined in claim 1 wherein the thermoset resin is cured unsaturated polyester resin.
Claim 6
Dependent Claim
15 words
Insulating laminate as defined in claim 1 wherein the thermoset resin is cured epoxy resin.
Claim 7
Dependent Claim
13 words
Insulating laminate as defined in claim 1 wherein the cellulosic reinforcements are paper.
Claim 8
Dependent Claim
21 words
Insulating laminate as defined in claim 1 wherein each of the layers of cured resin is 1 to 100 μm thick.
Claim 9
Dependent Claim
21 words
Insulating laminate as defined in claim 1 wherein an unreinforced layer of resin additionally exists on both sides of the laminate.
Claim 10
Dependent Claim
23 words
Insulating laminate as defined in claim 1 or 2 wherein the laminate is clad with metal foil on both sides of the laminate.
Claim 11
Dependent Claim
20 words
Insulating laminate as defined in claim 3 wherein in said cured resin is the same resin as said thermoset resin.
Claim 12
Dependent Claim
19 words
Insulating laminate as defined in claim 4 wherein the unsaturated polyester is liquid at room temperature prior to curing.
Claim 13
Dependent Claim
19 words
Insulating laminate as defined in claim 5 wherein the epoxy resin is liquid at room temperature prior to curing.
Claim 14
Dependent Claim
23 words
Insulating laminate as defined in claim 4 or 5 wherein the laminate is clad with metal foil on one side of the laminate.
Claim 15
Dependent Claim
23 words
Insulating laminate as defined in claim 4 or 5 wherein the laminate is clad with metal foil on both sides of the laminate.
Claim 16
Dependent Claim
31 words
Insulating laminate as defined in any one of claims 2, 4, 5, 6, 11, 12 or 18 wherein each of the layers of cured resin is 1 to 100 μm thick.
Claim 17
Dependent Claim
28 words
Insulating laminate as defined in any one of claims 1, 2, 4, 5, 6, 7, 11, 12 or 18 wherein said cured resin is the same thermoset resin.
Claim 18
Dependent Claim
21 words
Insulating laminate as defined in claim 9 wherein each of the layers of cured resin is 1 to 100 μm thick.
Claim 19
Dependent Claim
22 words
Insulating laminate as defined in claim 13 wherein in each of the layers of cured resin is 1 to 100 μm thick.
Claim 20
Dependent Claim
22 words
Insulating laminate as defined in claim 14 wherein in each of the layers of cured resin is 1 to 100 μm thick.
Claim 21
Dependent Claim
20 words
Insulating laminate as defined in claim 9 wherein in said cured resin is the same resin as said thermoset resin.
Claim 22
Dependent Claim
20 words
Insulating laminate as defined in claim 13 wherein in said cured resin is the same resin as said thermoset resin.
Claim 23
Dependent Claim
20 words
Insulating laminate as defined in claim 14 wherein in said cured resin is the same resin as said thermoset resin.
References Cited (Backward Citations)
GB743900A
Cited
GB816982A
Cited
FR1367824A
Cited
US3558423A
Cited
DE2411154A1
Cited
US3969177A
Cited
US4201616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-01 | 1985-08-03 | 1986-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-01 | 1989-08-03 | 1990-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-01 | 1993-08-03 | 1994-02-02 | $7700.00 | Window Closed / Lapsed |