US4591701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat radiating sheet body
Assignee: Individual
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Filing: 1984-12-19
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Granted: 1986-05-27
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Expires: 2004-12-19
Abstract
Abstract A heat radiating sheet body comprising a ceramic sheet, a carbon particle layer formed on the ceramic sheet and a pair of electrodes formed on the carbon particle layer, the ceramic sheet being formed in a thickness of 0.05˜1 mm by paper-making of ceramic fiber, the carbon particle layer being formed by coating by a screen printing utilizing a printing medium comprising a mixture of carbon particle and a dispersing medium.
Inventors
- 👤 Sennosuke Tokumaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:34
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/16; H05B3/12; H05B3/14; H05B3/141; H05B3/20; H05B3/34; H05B2203/00; H05B2203/011; H05B2203/013; H05B2203/017; H05B2203/026; H05B2203/036; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24959; Y10T428/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
81 words
A heat radiating sheet body comprising: (a) a flexible sheet having as a major component thereof ceramic fibers; (b) a carbon particle layer, adhered to at least one surface of said ceramic fiber containing flexible sheet, said carbon particle layer having a surface thickness which is essentially even and uniform over the surface of said ceramic fiber containing flexible sheet, and (c) a pair of electrodes disposed on said carbon particle layer so that there is a space between the electrodes.
Claim 2
Dependent Claim
81 words
A heat radiating sheet body comprising: (a) a flexible sheet having as a major component thereof ceramic fibers; (b) a carbon particle layer, adhered to at least one surface of said ceramic fiber containing flexible sheet, said carbon particle layer having a surface thickness which is essentially even and uniform over the surface of said ceramic fiber containing flexible sheet, and (c) a pair of electrodes disposed on said carbon particle layer so that there is a space between the electrodes.
Claim 3
Dependent Claim
21 words
A heat radiating sheet body according to claim 17, wherein said flexible sheet has a thickness of 0.05 to 1 mm.
Claim 4
Dependent Claim
25 words
A heat radiating sheet body according to claim 17, wherein said carbon particle layer has a thickness corresponding to 2.5 to 300 g/m 2 .
Claim 5
Dependent Claim
26 words
A heat radiating sheet body according to claim 17, wherein said flexible sheet is produced by paper-making of ceramic fiber in the presence of a binder.
Claim 6
Dependent Claim
28 words
A heat radiating sheet body according to claim 4, wherein said binder is composition selected from a group of an organic binder and a barium based inorganic binder.
Claim 7
Dependent Claim
28 words
A heat radiating sheet body according to claim 4, wherein said flexible sheet formed into a paper form is baked at a temperature of 250° to 700° C.
Claim 8
Dependent Claim
39 words
A heat radiating sheet body according to claim 17, wherein said carbon particle layer is formed by coating by a screen printing method using a printing medium comprising carbon particle and a dispersing medium, followed by heating to dry.
Claim 9
Dependent Claim
36 words
A heat radiating sheet body according to claim 17, wherein said carbon particle layer is formed by dipping said flexible sheet into a mixture of carbon particle and a dispersing medium, followed by heating to dry.
Claim 10
Dependent Claim
24 words
A heat radiating sheet body according to claim 7, wherein said dispersing medium is a mixture of an organic resin and an organic solvent.
Claim 11
Dependent Claim
24 words
A heat radiating sheet body according to claim 8, wherein said dispersing medium is a mixture of an organic resin and an organic solvent.
Claim 12
Dependent Claim
38 words
A heat radiating sheet body according to claim 9, wherein said organic resin is a composition selected from a group of a liquid polyethyleneterephthalate resin, a liquid acrylic resin, a liquid alkyd resin and a liquid polytetrafluoroethylene resin.
Claim 13
Dependent Claim
25 words
A heat radiating sheet body according to claim 9, wherein said organic solvent is a composition selected from a group of ketone and aromatic solvent.
Claim 14
Dependent Claim
28 words
A heat radiating sheet body according to claim 7, wherein said carbon particle layer formed by screen printing is baked at a temperature of 400° to 700° C.
Claim 15
Dependent Claim
27 words
A heat radiating sheet body according to claim 8, wherein said carbon particle layer formed by dipping is baked at a temperature of 400° to 700° C.
Claim 16
Dependent Claim
28 words
A heat radiating sheet body according to claim 7, wherein said carbon particle layer formed by screen printing is dried at a temperature of room temperature 150° C.
Claim 17
Dependent Claim
28 words
A heat radiating sheet body according to claim 8, wherein said carbon particle layer formed by dipping is dried at a temperature of room temperature to 150° C.
Claim 18
Dependent Claim
29 words
A heat radiating sheet body according to claim 6, wherein said binder is a composition selected from a group of an organic binder and a barium based inorganic binder.
References Cited (Backward Citations)
US4367398A
Cited
US3978316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |