Patent US4390458A successfully refreshed from Google Patents.
US4390458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive articles
Assignee: Occidental Chemical Corp
•
Filing: 1980-02-28
•
Granted: 1983-06-28
•
Expires: 2000-02-28
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
2026-11-08 18:05
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/08; C08K3/10; C08K3/14; H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H01B1/20; H01B1/22; H01B1/24
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
42 words
An electrically conductive article comprised of a matrix of a non-conductive material containing a substantially uniform dispersion of a finely divided conductive material selected from the group consisting of ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, iron carbide, and mixtures thereof.
Claim 2
Dependent Claim
42 words
An electrically conductive article comprised of a matrix of a non-conductive material containing a substantially uniform dispersion of a finely divided conductive material selected from the group consisting of ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, iron carbide, 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
21 words
The conductive material of claim 1 wherein the conductive material has a size ranging between about 2 and about 40 microns.
Claim 5
Dependent Claim
13 words
The article of claim 1 wherein the non-conductive matrix is an elastomeric material.
Claim 6
Dependent Claim
11 words
The article of claim 1 wherein the non-conductive matrix is glass.
Claim 7
Dependent Claim
13 words
The article of claim 1 wherein the non-conductive matrix is a ceramic material.
Claim 8
Dependent Claim
11 words
The article of claim 1 wherein the matrix is portland cement.
Claim 9
Dependent Claim
35 words
A molding composition comprising a finely divided mixture of a moldable non-conductive material and a conductive material selected from the group consisting of ferromanganese, ferromolybdenum, ferrosilicon, ferochrome, ferrovanadium, ferrozirconium, ferrotungsten, iron carbide, and mixtures thereof.
Claim 10
Dependent Claim
35 words
A molding composition comprising a finely divided mixture of a moldable non-conductive material and a conductive material selected from the group consisting of ferromanganese, ferromolybdenum, ferrosilicon, ferochrome, ferrovanadium, ferrozirconium, ferrotungsten, iron carbide, and mixtures thereof.
Claim 11
Dependent Claim
12 words
The composition of claim 8, wherein the moldable non-conductive material is plastic.
Claim 12
Dependent Claim
11 words
The composition of claim 8 wherein the non-conductive material is ceramic.
Claim 13
Dependent Claim
11 words
The composition of claim 8 wherein the non-conductive material is rubber.
Claim 14
Dependent Claim
22 words
The composition of claim 8 wherein the conductive material comprises from about 5 to about 95 percent by weight of the composition.
Claim 15
Dependent Claim
19 words
The composition of claim 8 wherein the conductive material ranges in size from about 2 to about 40 microns.
Claim 16
Dependent Claim
15 words
The electrically conductive article of claim 1 wherein the conductive material is mixed with graphite.
Claim 17
Dependent Claim
14 words
The molding composition of claim 8 wherein the conductive material is mixed with graphite.
Claim 18
Dependent Claim
41 words
An electrically conductive article comprising a matrix of a plastic material containing a substantially uniform dispersion of a finely divided conductive material selected from the group consisting of ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, iron carbide, and mixtures thereof.
Claim 19
Dependent Claim
41 words
An electrically conductive article comprising a matrix of a plastic material containing a substantially uniform dispersion of a finely divided conductive material selected from the group consisting of ferromanganese, ferromolybdenum, ferrosilicon, ferrochrome, ferrovanadium, ferrozirconium, ferrotitanium, ferrotungsten, 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
US4057777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |