US5225110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated particulate metallic materials
Assignee: Vesuvius Holdings Ltd
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Filing: 1990-06-08
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Granted: 1993-07-06
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Expires: 2010-06-08
Abstract
Abstract Material which is coated with a coating of an inherently conductive polymeric material. Suitable conductive polymeric materials include polypyrrole, substituted polypyrrole, polyaniline and substituted polyanilines. The coated powdery or granular metallic material may be used as an EMI and/or RFI shielding material.
Inventors
- 👤 Poopathy Kathirgamanathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:44
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0083; B; B22; B22F; B22F1/00; B22F1/10; C; C08; C08K; C08K9/00; C08K9/10; C09; C09C; C09C1/00; C09C1/62; C09D; C09D11/00; C09D11/52; H01; H01B; H01B1/00; H01B1/02; H01B1/06; H01B1/12; H01B1/124; H01B1/127; H01B1/128; H01B1/20; H01B1/22; C01; C01P; C01P2004/00; C01P2004/10; C01P2004/20; C01P2004/50; C01P2004/54; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80; C01P2006/00; C01P2006/11; C01P2006/12; C01P2006/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
28 words
A metallic material selected from the group consisting of powdery and granular metallic materials, which is coated with a coating of a polymeric material which is electrically conductive.
Claim 2
Dependent Claim
28 words
A metallic material selected from the group consisting of powdery and granular metallic materials, which is coated with a coating of a polymeric material which is electrically conductive.
Claim 3
Dependent Claim
48 words
Material according to claim 1 wherein the electrically conductive polymeric material is selected from the group consisting of a polypyrrole, a substituted polypyrrole, a polythiophene, a substituted polythiophene, a polyaniline, a substituted polyaniline, a polyethylene oxide, an aniline copolymer, a polyphthalocyanine, a polyphenylene, a poly(isothianaphthene) and a polyphenylvinylene.
Claim 4
Dependent Claim
40 words
Material according to claim 1 wherein the metallic material is selected from the group consisting of iron, aluminium, copper, nickel, silver, gold, platinum, beryllium, cadmium, tin, lead, chromium, zinc, tungsten, stainless steel, brass, a cobalt/chromium alloy and a nickel/iron alloy.
Claim 5
Dependent Claim
30 words
Material according to claim 1 which has an average diameter or average length in the range of from 0.1 to 500 micrometers, prior to coating with the conductive polymeric material.
Claim 6
Dependent Claim
20 words
A particulate product comprising particles of non-pyrophoric metallic material coated with a polymeric material consisting of an electrically conductive polymer.
Claim 7
Dependent Claim
20 words
A particulate product comprising particles of non-pyrophoric metallic material coated with a polymeric material consisting of an electrically conductive polymer.
Claim 8
Dependent Claim
42 words
A particulate product according to claim 5, wherein said metallic material is selected from the group consisting of iron, aluminum, copper, nickel, silver, gold, platinum, beryllium, cadmium, tin, lead, chromium, zinc, tungsten, stainless steel, brass, a cobalt/chromium alloy and a nickel/iron alloy.
Claim 9
Dependent Claim
49 words
A particulate product according to claim 6, wherein said polymeric material is selected from the group consisting of a polypyrrole, a substituted polypyrrole, a polythiophene, a substituted polythiophene, a polyaniline, a substituted polyaniline, a polyethylene oxide, an aniline copolymer, a polyphthalocyanine, a polyphenylene, a poly (isothianaphthene) and a polyphenylvinylene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |