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US4556507A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrically conducting material and method of preparing same

Assignee: Nihon Sanmo Dyeing Co Ltd
•
Filing: 1983-01-26
•
Granted: 1985-12-03
•
Expires: 2003-01-26
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Abstract

Abstract An electrically conducting material including a polymeric material having adsorbed sulfides of a first metal selected from copper, cobalt, tin, mercury and of lead and a second metal selected from silver, gold and elements of the platinum group. The polymeric material is in the form of powder or a shaped body such as a fiber, film or string and is formed of a synthetic polymer without cyanic groups such as a polyester or a polyamide or a naturally occurring polymeric substance such as silk or wool. The electrically conducting material may be prepared by treating the polymeric material with hydrogen sulfide, and then treating the resultant material having adsorbed hydrogen sulfide with (a) a source of ions containing the first metal, (b) a source of ions containing the second metal and, optionally, (c) a sulfur-containing compound to form sulfides of the first and second metals adsorbed by the polymeric material.

Inventors

  • 👤 Shinji Tomibe
  • 👤 Reizo Gomibuchi
  • 👤 Kiyofumi Takahashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 11:23
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/83; D06Q; D06Q1/00; D06Q1/04; H; H01; H01B; H01B1/00; H01B1/20; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/20; Y10T442/2418; Y10T442/2467

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 86 words
An electrically conducting material comprising a cyanic group-free polymer or copolymer selected from the group consisting of polyesters, polyamides, polyurethanes, polycarbonates, polyamideimides, polyphenols, polyethers, polyvinylalcohols, polyethylene oxides, wool and polychlal, a first sulfide of at least one first metal selected from the group consisting of copper, cobalt, tin, mercury and lead and a second sulfide of at least one second metal selected from the group consisting of silver, gold and elements of the platinum group, said first and second sulfides being adsorbed on said polymeric material.
Claim 2
Dependent Claim 86 words
An electrically conducting material comprising a cyanic group-free polymer or copolymer selected from the group consisting of polyesters, polyamides, polyurethanes, polycarbonates, polyamideimides, polyphenols, polyethers, polyvinylalcohols, polyethylene oxides, wool and polychlal, a first sulfide of at least one first metal selected from the group consisting of copper, cobalt, tin, mercury and lead and a second sulfide of at least one second metal selected from the group consisting of silver, gold and elements of the platinum group, said first and second sulfides being adsorbed on said polymeric material.
Claim 3
Dependent Claim 34 words
An electrically conducting material as claimed in claim 1, wherein the amount of said first sulfide is about 0.5 to 30% by weight as elemental metal based on the weight of the polymeric material.
Claim 4
Dependent Claim 50 words
An electrically conducting material as claimed in claim 2, wherein the amount of said second sulfide is such that the atomic ratio M 2 /M 1 , where M 1 and M 2 stand for the first and second metals, respectively, is in the range of about 0.0001 to 0.5.
Claim 5
Dependent Claim 26 words
An electrically conducting material as claimed in claim 3, wherein the atomic ratio M 2 /M 1 is in the range of about 0.001 to 0.3.
Claim 6
Dependent Claim 15 words
An electrically conducting material as claimed in claim 1, wherein the second metal is silver.
Claim 7
Dependent Claim 22 words
An electrically conducting material as claimed in claim 1, further comprising the sulfide of iron or nickel adsorbed on the polymeric material.
Claim 8
Dependent Claim 23 words
An electrically conducting material as claimed in claim 1, wherein said polymeric material is in the form of powder or a shaped body.

References Cited (Backward Citations)

DE232848C Cited
FR644629A Cited
US3940533A Cited
US3958066A Cited
US4378226A Cited
EP0035406A1 Cited
US4364739A Cited
GB2078545A Cited
EP0043503A1 Cited
US4336028A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-12-02 1989-06-03 1989-12-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-12-02 1993-06-03 1993-12-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-12-02 1997-06-03 1997-12-03 $7700.00 Window Closed / Lapsed

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