US4258100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive electric conductive sheet material
Assignee: Kyowa KK
•
Filing: 1978-09-06
•
Granted: 1981-03-24
•
Expires: 1998-09-06
Abstract
Abstract Pressure-sensitive electric conductive sheet material is provided, which comprises at least one layer of a rubbery elastic material wherein are substantially uniformly distributed fine particles of electric conductive metal.
Inventors
- 👤 Takeo Fujitani
- 👤 Kajio Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:13
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B23; B23K; B23K35/00; B23K35/22; B23K35/226; B32B25/00; B32B25/10; G; G01; G01L; G01L1/00; G01L1/20; H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; B32B2264/00; B32B2264/10; B32B2264/105; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/029; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249982; Y10T428/249983; Y10T428/249986; Y10T428/25; Y10T428/256; Y10T428/28; Y10T428/2848; Y10T428/2852; Y10T428/2857
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
63 words
A pressure-sensitive electric conductive sheet material comprising at least one layer of rubbery elastic material and an adhesive layer disposed on at least one of the surfaces of said sheet, both layers having substantially uniformly distributed fine particles of electric conductive metal, the quantity and size of said metal particles being such that the electrical conductivity of said sheet is sensitive to pressure.
Claim 2
Dependent Claim
63 words
A pressure-sensitive electric conductive sheet material comprising at least one layer of rubbery elastic material and an adhesive layer disposed on at least one of the surfaces of said sheet, both layers having substantially uniformly distributed fine particles of electric conductive metal, the quantity and size of said metal particles being such that the electrical conductivity of said sheet is sensitive to pressure.
Claim 3
Dependent Claim
19 words
A pressure-sensitive electric conductive sheet material according to claim 1, wherein said layer of rubbery elastic material is foamed.
Claim 4
Dependent Claim
31 words
A pressure-sensitive electric conductive sheet material according to claim 1 or 2 further comprising a fibrous supporting layer attached to at least one surface of said layer of rubbery elastic material.
Claim 5
Dependent Claim
36 words
A pressure-sensitive electric conductive sheet material according to claim 1 or 2 wherein the amount of the metal particles is 10 to 800 parts by weight per 100 parts by weight of the rubbery elastic material.
Claim 6
Dependent Claim
34 words
A pressure-sensitive electric conductive sheet material according to claim 1 or 2 wherein the amount of the metal particles is 300-600 parts by weight per 100 parts by weight of the rubbery elastic material.
Claim 7
Dependent Claim
24 words
A pressure-sensitive electric conductive sheet material according to claim 1 wherein the particle size of the fine metal particles is 10 to 1,000 mesh.
Claim 8
Dependent Claim
19 words
A pressure-sensitive electric conductive sheet material according to claim 1 wherein the particle size is 50 to 300 mesh.
Claim 9
Dependent Claim
39 words
A pressure-sensitive electric conductive sheet material according to claims 1 or 2 wherein the amount of the metal particles in said adhesive layer is 10 to 100 parts by weight per 100 parts by weight of said adhesive layer.
Claim 10
Dependent Claim
20 words
A pressure-sensitive electric conductive sheet material according to claim 2 wherein the metal particle size is 10 to 1,000 mesh.
Claim 11
Dependent Claim
34 words
A pressure-sensitive electric conductive sheet material according to claim 3 wherein the amount of the metal particles is 10 to 800 parts by weight per 100 parts by weight of the rubbery elastic material.
Claim 12
Dependent Claim
59 words
A pressure-sensitive electric conductive sheet material according to claim 3, including two layers of said rubbery elastic material and said fiberous supporting layer disposed between said rubbery elastic layers and further comprising two adhesive layers wherein are substantially uniformly distributed fine particles of electric conductive metal, said adhesive layers disposed on the outer surfaces of said rubbery elastic layers.
Claim 13
Dependent Claim
37 words
A pressure-sensitive electric conductive sheet material according to claim 11 wherein the amount of the metal particles in said adhesive layer is 10 to 100 parts by weight per 100 parts by weight of said adhesive layer.
Claim 14
Dependent Claim
20 words
A pressure-sensitive electric conductive sheet material according to claim 12 wherein the metal particle size is 10 to 1,000 mesh.
Claim 15
Dependent Claim
32 words
A pressure-sensitive electric conductive sheet material according to claim 12 wherein the amount of the metal particles is 300-600 parts by weight per 100 parts by weight of the rubbery elastic material.
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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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |