Patent US5628932A successfully refreshed from Google Patents.
US5628932A
Expired / Lapsed
US
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Electroconductive composition and process of preparation
Assignee: Milliken and Co
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Filing: 1994-06-15
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Granted: 1997-05-13
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Expires: 2014-06-15
Abstract
Abstract An electroconductive composition comprising a two-dimensional network of antimony-containing tin oxide crystallites in association with amorphous silica, the composition according to one aspect of the invention comprising a powder of submicron to tens of micron size particles capable of forming a conductive network within a carrier matrix, such as a thin film matrix, and a process for preparing the composition.
Inventors
- 👤 Howard R. Linton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:51
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2911; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
58 words
A conductive member comprising a carrier matrix and an electroconductive network wherein said network comprises interconnecting shaped particles, said particles comprising a core and an amorphous silica or a silica-containing material which is surface-coated with a coating comprising antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide.
Claim 2
Dependent Claim
58 words
A conductive member comprising a carrier matrix and an electroconductive network wherein said network comprises interconnecting shaped particles, said particles comprising a core and an amorphous silica or a silica-containing material which is surface-coated with a coating comprising antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide.
Claim 3
Dependent Claim
27 words
The conducting network as in claim 1 wherein said shaped particles comprise a core material having a surface coating comprising an amorphous silica or a silica-containing material.
Claim 4
Dependent Claim
30 words
The member of claim 1 in which the silica-containing material is a composition selected from metal silicates, silica-containing glass, and material having an extensive co-valent network involving SiO 4 units.
Claim 5
Dependent Claim
13 words
The member of claim 1 in which the carrier matrix comprises a paint.
Claim 6
Dependent Claim
13 words
The member of claim 1 in which the carrier matrix comprises a fiber.
Claim 7
Dependent Claim
34 words
The conducting network as in claim 1 further comprising up to about 10% by weight of one or more grain refiners selected from alkali metals, alkaline earth metals, transition metals and rare earth elements.
Claim 8
Dependent Claim
18 words
The composition of claim 6 in which the grain refiners are selected from Ca, Ba, Sr, and Mg.
Claim 9
Dependent Claim
13 words
The member of claim 1 in which the substrate consists essentially of mica.
Claim 10
Dependent Claim
10 words
The member of claim 1 wherein said member is transparent.
Claim 11
Dependent Claim
21 words
The member of claim 2 in which the core material comprises a carbonate selected from BaCO 3 and CaCO 3 .
Claim 12
Dependent Claim
28 words
The member of claim 2 in which the core material comprises a member selected from the group consisting of BaSO 4 , CaSO 4 and TiO 2 .
Claim 13
Dependent Claim
14 words
The member of claims 2 or 1 in which the silica-containing material comprises mica.
Claim 14
Dependent Claim
63 words
A product comprising a matrix and an electroconductive composition which comprises shaped particles selected from BaSO 4 , SrSO 4 , CaSO 4 , graphite, carbon, mica, and TiO 2 which are coated with amorphous silica or a silica-containing material and electrically conductive antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide.
Claim 15
Dependent Claim
63 words
A product comprising a matrix and an electroconductive composition which comprises shaped particles selected from BaSO 4 , SrSO 4 , CaSO 4 , graphite, carbon, mica, and TiO 2 which are coated with amorphous silica or a silica-containing material and electrically conductive antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide.
Claim 16
Dependent Claim
34 words
The electroconductive composition as in claim 13 further comprising up to about 10% by weight of one or more grain refiners selected from alkali metals, alkaline earth metals, transition metals and rare earth elements.
Claim 17
Dependent Claim
80 words
A product comprising a matrix and an electroconductive composition said composition comprises hollow silica shells less than about 250 nm in thickness that have an exterior coating comprising electrically conductive antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide, wherein said composition optionally comprises up to about 10% by weight of at least one grain refiner selected from alkali metals, alkaline earth metals, transition metals and rare earth elements.
Claim 18
Dependent Claim
80 words
A product comprising a matrix and an electroconductive composition said composition comprises hollow silica shells less than about 250 nm in thickness that have an exterior coating comprising electrically conductive antimony-containing tin oxide in which the antimony content ranges from 1 to about 30% by weight of the tin oxide, wherein said composition optionally comprises up to about 10% by weight of at least one grain refiner selected from alkali metals, alkaline earth metals, transition metals and rare earth elements.
Claim 19
Dependent Claim
70 words
A product comprising a carrier matrix and an electroconductive network wherein said network comprises interconnecting shaped particles, said particles comprising a core material coated with at least two coatings wherein one of said coatings is silica or a silica-containing material and wherein one of said coatings comprises electrically conductive antimony-containing tin oxide in which the antimony content ranges from about 1 to about 30% by weight of the tin oxide.
Claim 20
Dependent Claim
70 words
A product comprising a carrier matrix and an electroconductive network wherein said network comprises interconnecting shaped particles, said particles comprising a core material coated with at least two coatings wherein one of said coatings is silica or a silica-containing material and wherein one of said coatings comprises electrically conductive antimony-containing tin oxide in which the antimony content ranges from about 1 to about 30% by weight of the tin oxide.
References Cited (Backward Citations)
US2885366A
Cited
US4373013A
Cited
US4452830A
Cited
JPS56140028A
Cited
US4431764A
Cited
JPS5986637A
Cited
EP0139557A1
Cited
US4568609A
Cited
JPS60253112A
Cited
JPS61264345A
Cited
JPS6218564A
Cited
JPS62216105A
Cited
JPS6320342A
Cited
JPS6334180A
Cited
JPS63200158A
Cited
JPS63215745A
Cited
US4917952A
Cited
EP0373575A1
Cited
US5472640A
Cited
US5236737A
Cited
US5071676A
Cited
US5104583A
Cited
US5364566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-05-12 | 2000-11-11 | 2001-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-12 | 2004-11-11 | 2005-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-12 | 2008-11-11 | 2009-05-13 | $7700.00 | Window Closed / Lapsed |