US4472474A
Expired / Lapsed
US
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Electrically conductive laminate
Assignee: Formica Corp
•
Filing: 1983-10-26
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Granted: 1984-09-18
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Expires: 2003-10-26
Abstract
Abstract An electrically conductive laminate which provides a non-instantaneous controlled rate of static dissipation is disclosed, said laminate containing, in at least the overlay or decor layer thereof, a water-soluble, alkali metal salt.
Inventors
- 👤 Gene E. Grosheim
- 👤 Alwyn F. Wiebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:23
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/06; B32B29/002; B32B29/005; H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/106; B32B2264/00; B32B2264/10; B32B2264/107; B32B2264/108; B32B2307/00; B32B2307/20; B32B2307/202; B32B2317/00; B32B2317/12; B32B2317/122; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24934; Y10T428/30; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31967; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
87 words
An electrically conductive laminate comprising, in superimposed relationship, (a) a plurality of thermoset resin impregnated cellulosic core sheets (b) a decorative print sheet impregnated with a noble thermoset resin, and (c) optionally, an overlay sheet impregnated with a noble thermoset resin, wherein at least the overlay or decor layer contains from about 0.5 to about 10%, by weight, based on the total non-resin weight of the laminate, of a water-soluble alkali metal salt and at least one component of the core comprises an electrically conductive fibrous web.
Claim 2
Dependent Claim
87 words
An electrically conductive laminate comprising, in superimposed relationship, (a) a plurality of thermoset resin impregnated cellulosic core sheets (b) a decorative print sheet impregnated with a noble thermoset resin, and (c) optionally, an overlay sheet impregnated with a noble thermoset resin, wherein at least the overlay or decor layer contains from about 0.5 to about 10%, by weight, based on the total non-resin weight of the laminate, of a water-soluble alkali metal salt and at least one component of the core comprises an electrically conductive fibrous web.
Claim 3
Dependent Claim
13 words
A laminate in accordance with claim 1 wherein said salt is sodium formate.
Claim 4
Dependent Claim
26 words
A laminate in accordance with claim 1 wherein said fibrous web is positioned as the topmost sheet of the laminate core and below said decor sheet.
Claim 5
Dependent Claim
20 words
A laminate in accordance with claim 1 wherein said fibrous web comprises a sheet of paper laden with carbon particles.
Claim 6
Dependent Claim
17 words
A laminate in accordance with claim 1 wherein said fibrous web comprises a sheet containing carbon fibers.
Claim 7
Dependent Claim
18 words
A laminate in accordance with claim 1 wherein a plurality of conductive webs are positioned in said core.
Claim 8
Dependent Claim
16 words
A laminate in accordance with claim 1 wherein said salt is contained in said overlay sheet.
Claim 9
Dependent Claim
17 words
A laminate in accordance with claim 1 wherein said salt is contained in said decorative print sheet.
Claim 10
Dependent Claim
109 words
A method for the preparation of the laminate of claim 1 which comprises heat and pressure consolidating a laminate assembly comprising, in superimposed relationship, (a) a plurality of thermosetting resin impregnated cellulosic core sheets at least one of which comprises an electrically conductive fibrous web, (b) a decorative print sheet impregnated with a noble thermosetting resin, (c) an optional overlay sheet impregnated with a noble thermosetting resin and (d) a press plate, wherein at least one of said decorative print sheet or overlay sheet contains from about 0.5 to about 10.0%, by weight, based on the total weight of non-resin in said assembly, of a water-soluble alkali metal salt.
References Cited (Backward Citations)
US3567689A
Cited
US3845353A
Cited
US3700537A
Cited
US3811935A
Cited
US3761448A
Cited
US3798111A
Cited
US4154882A
Cited
US4122235A
Cited
US4043970A
Cited
US4120847A
Cited
US4122054A
Cited
US4219602A
Cited
US4157324A
Cited
US4301040A
Cited
US4311757A
Cited
US4311748A
Cited
US4374886A
Cited
US4343850A
Cited
US4376812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |