US4197218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive articles
Assignee: Occidental Chemical Corp
•
Filing: 1978-01-23
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Granted: 1980-04-08
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Expires: 1998-01-23
Abstract
Abstract Electrically conductive articles which comprise a non-conductive matrix containing an electrically conductive dispersion of finely divided ferroalloy, silicon alloy, or mixtures thereof, are described. Compositions for making the articles utilizing various non-conductive materials, e.g., plastics, ceramics, and glass, are also described.
Inventors
- 👤 James P. McKaveney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:21
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; C; C08; C08K; C08K3/00; C08K3/32; C08K3/38; H01B1/20; H01B1/22; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; H05K3/00; H05K3/22; H05K3/24; H05K3/245
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
32 words
An electrically conductive article comprised of a matrix of a non-conductive material containing a substantially uniform dispersion of a finely divided conductive refractory ferroalloy material selected from ferroboron, ferrophosphorus, and mixtures thereof.
Claim 2
Dependent Claim
32 words
An electrically conductive article comprised of a matrix of a non-conductive material containing a substantially uniform dispersion of a finely divided conductive refractory ferroalloy material selected from ferroboron, ferrophosphorus, and mixtures thereof.
Claim 3
Dependent Claim
22 words
The article of claim 1 wherein the conductive material comprises from about 5 to about 90 percent by weight of the article.
Claim 4
Dependent Claim
11 words
The article of claim 1 wherein the conductive material is ferrophosphorus.
Claim 5
Dependent Claim
11 words
The article of claim 1 wherein the conductive material is ferroboron.
Claim 6
Dependent Claim
21 words
The conductive material of claim 1 wherein the conductive material has a size ranging between about 2 and about 40 microns.
Claim 7
Dependent Claim
12 words
The article of claim 1 wherein the non-conductive matrix material is plastic.
Claim 8
Dependent Claim
13 words
The article of claim 1 wherein the non-conductive matrix is an elastomeric material.
Claim 9
Dependent Claim
11 words
The article of claim 1 wherein the non-conductive matrix is glass.
Claim 10
Dependent Claim
13 words
The article of claim 1 wherein the non-conductive matrix is a ceramic material.
Claim 11
Dependent Claim
11 words
The article of claim 9 wherein the conductive material is ferrophosphorus.
Claim 12
Dependent Claim
11 words
The article of claim 10 wherein the conductive material is ferroboron.
Claim 13
Dependent Claim
28 words
A molding composition comprising a finely divided mixture of a moldable non-conductive material and a conductive refractory ferroalloy material selected from the group, ferroboron, ferrophosphorus, and mixtures thereof.
Claim 14
Dependent Claim
28 words
A molding composition comprising a finely divided mixture of a moldable non-conductive material and a conductive refractory ferroalloy material selected from the group, ferroboron, ferrophosphorus, and mixtures thereof.
Claim 15
Dependent Claim
12 words
The composition of claim 12 wherein the moldable non-conductive material is plastic.
Claim 16
Dependent Claim
11 words
The composition of claim 12 wherein the conductive material is ferrophosphorus.
Claim 17
Dependent Claim
11 words
The composition of claim 12 wherein the conductive material is ferroboron.
Claim 18
Dependent Claim
11 words
The composition of claim 12 wherein the non-conductive material is ceramic.
Claim 19
Dependent Claim
11 words
The composition of claim 15 wherein the non-conductive material is rubber.
Claim 20
Dependent Claim
22 words
The composition of claim 12 wherein the conductive material comprises from about 5 to about 95 percent by weight of the composition.
Claim 21
Dependent Claim
19 words
The composition of claim 12 wherein the conductive material ranges in size from about 2 to about 40 microns.
Claim 22
Dependent Claim
17 words
The composition of claim 1 wherein the conductive material is a mixture of refractory ferroalloy with graphite.
Claim 23
Dependent Claim
17 words
The composition of claim 12 wherein the conductive material is a mixture of refractory ferroalloy with graphite.
Claim 24
Dependent Claim
41 words
An electrically conductive material comprising a matrix of grease containing a substantially uniform dispersion of finely divided conductive particles selected from refractory ferroalloys of the group ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, ferroboron, ferrophosphorus, iron carbide, or mixtures thereof.
Claim 25
Dependent Claim
41 words
An electrically conductive material comprising a matrix of grease containing a substantially uniform dispersion of finely divided conductive particles selected from refractory ferroalloys of the group ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, ferroboron, ferrophosphorus, iron carbide, or mixtures thereof.
Claim 26
Dependent Claim
43 words
An electrically conductive article comprised of a matrix of portland cement containing a substantially uniform dispersion of a finely divided conductive refractory ferroalloy material selected from the group ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, ferroboron, ferrophosphorus, iron carbide and mixtures thereof.
Claim 27
Dependent Claim
43 words
An electrically conductive article comprised of a matrix of portland cement containing a substantially uniform dispersion of a finely divided conductive refractory ferroalloy material selected from the group ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, ferroboron, ferrophosphorus, iron carbide and mixtures thereof.
References Cited (Backward Citations)
US2159805A
Cited
US2159808A
Cited
US2661282A
Cited
US3408524A
Cited
US3484284A
Cited
US3854940A
Cited
US3709835A
Cited
US3668150A
Cited
US3904555A
Cited
US4028276A
Cited
SU546021A1
Cited
US4057777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |