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US6147302A
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Frequency selective electromagnetic wave shielding material and a method for using the same
Assignee: Nippon Paint Co Ltd
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Filing: 1998-02-01
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Granted: 2000-11-14
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Expires: 2018-02-01
Abstract
Abstract PCT No. PCT/JP98/00457 Sec. 371 Date Oct. 5, 1998 Sec. 102(e) Date Oct. 5, 1998 PCT Filed Feb. 1, 1998 PCT Pub. No. WO98/35542 PCT Pub. Date Aug. 13, 1998A frequency-selective electromagnetic wave shielding material is used for shielding areas or devices from electromagnetic waves. The electromagnetic wave shielding material has a substrate with a plurality of electroconductive loop parts which are spatially allocated on the substrate, wherein each of the electroconductive loop parts is insulated from all other electroconductive loop parts.
Inventors
- 👤 Seiichi Matsuo
- 👤 Toshiki Koso
- 👤 Shoichi Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:17
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0086; H05K9/0007; H05K9/002; H05K9/0039; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/31504; Y10T428/31551; Y10T428/31645
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
45 words
A frequency-selective electromagnetic wave shielding material, comprising: a substrate; a plurality of adjacent electroconductive loop parts being spatially allocated on said substrate; and each of said plurality of adjacent electroconductive loop parts being insulated from all others of said plurality of adjacent electroconductive loop parts.
Claim 2
Dependent Claim
45 words
A frequency-selective electromagnetic wave shielding material, comprising: a substrate; a plurality of adjacent electroconductive loop parts being spatially allocated on said substrate; and each of said plurality of adjacent electroconductive loop parts being insulated from all others of said plurality of adjacent electroconductive loop parts.
Claim 3
Dependent Claim
18 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein said substrate comprises a polyethylene terephthalate film.
Claim 4
Dependent Claim
25 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein said plurality of adjacent electromagnetic loop parts are one of circles, ellipses and polygons.
Claim 5
Dependent Claim
30 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein said plurality of adjacent electromagnetic loop parts comprise one of electroconductive metals, electroconductive oxides, electroconductive polymers and electroconductive composites.
Claim 6
Dependent Claim
29 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein said plurality of adjacent electroconductive loop parts are not separated by a distance of more than 20 μm.
Claim 7
Dependent Claim
29 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein said plurality of adjacent electroconductive loop parts are not separated by a distance of more than 1 mm.
Claim 8
Dependent Claim
24 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein said plurality of adjacent electroconductive loop parts are allocated in a lattice pattern.
Claim 9
Dependent Claim
27 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein a distance between said plurality of adjacent electroconductive loop parts determines a frequency to be shielded.
Claim 10
Dependent Claim
125 words
A frequency-selective electromagnetic wave shielding material, comprising: first and second substrates; a plurality of adjacent electroconductive loop parts being spaced at a predetermined distance and allocated on said first substrate; a plurality of adjacent electroconductive loop parts being spaced at said predetermined distance and allocated on said second substrate; each of said plurality of adjacent electroconductive loop parts being insulated from all others of said plurality of adjacent electroconductive loop parts; and said first substrate being placed adjacent to said second substrate such that said plurality of electroconductive loop parts allocated on said first substrate and said plurality of electroconductive loop parts allocated on said second substrate appear to form an overlapping pattern when observed from a direction perpendicular to said first and second substrates.
Claim 11
Dependent Claim
125 words
A frequency-selective electromagnetic wave shielding material, comprising: first and second substrates; a plurality of adjacent electroconductive loop parts being spaced at a predetermined distance and allocated on said first substrate; a plurality of adjacent electroconductive loop parts being spaced at said predetermined distance and allocated on said second substrate; each of said plurality of adjacent electroconductive loop parts being insulated from all others of said plurality of adjacent electroconductive loop parts; and said first substrate being placed adjacent to said second substrate such that said plurality of electroconductive loop parts allocated on said first substrate and said plurality of electroconductive loop parts allocated on said second substrate appear to form an overlapping pattern when observed from a direction perpendicular to said first and second substrates.
Claim 12
Dependent Claim
22 words
A frequency-selective electromagnetic wave shielding material claimed in claim 9, wherein said first and second substrates each comprise a polyethylene terephthalate film.
Claim 13
Dependent Claim
32 words
A frequency-selective electromagnetic wave shielding material claimed in claim 9, wherein said plurality of adjacent electromagnetic loop parts allocated on said first and second substrates are one of circles, ellipses and polygons.
Claim 14
Dependent Claim
37 words
A frequency-selective electromagnetic wave shielding material claimed in claim 9, wherein said plurality of adjacent electromagnetic loop parts allocated on said first and second substrates comprise one of electroconductive metals, electroconductive oxides, electroconductive polymers and electroconductive composites.
Claim 15
Dependent Claim
37 words
A frequency-selective electromagnetic wave shielding material claimed in claim 9, wherein said plurality of adjacent electroconductive loop parts allocated on said first and second substrates, respectively, are not separated by a distance of more than 5 μm.
Claim 16
Dependent Claim
37 words
A frequency-selective electromagnetic wave shielding material claimed in claim 1, wherein said plurality of adjacent electroconductive loop parts allocated on said first and second substrates, respectively, are not separated by a distance of more than 0.5 mm.
Claim 17
Independent Claim
63 words
A method for frequency-selective electromagnetic wave shielding, comprising: applying to at least one of a wall or window, a frequency-selective electromagnetic wave shielding material comprising a substrate, a plurality of adjacent electroconductive loop parts being spatially allocated on said substrate, and each of said plurality of adjacent electroconductive loop parts being insulated from all others of said plurality of adjacent electroconductive loop parts.
Claim 18
Independent Claim
63 words
A method for frequency-selective electromagnetic wave shielding, comprising: applying to at least one of a wall or window, a frequency-selective electromagnetic wave shielding material comprising a substrate, a plurality of adjacent electroconductive loop parts being spatially allocated on said substrate, and each of said plurality of adjacent electroconductive loop parts being insulated from all others of said plurality of adjacent electroconductive loop parts.
Claim 19
Dependent Claim
19 words
A method for frequency-selective electromagnetic wave shielding claimed in claim 15, wherein said substrate comprises a polyethylene terephthalate film.
Claim 20
Dependent Claim
26 words
A method of frequency-selective electromagnetic wave shielding claimed in claim 15, wherein said plurality of adjacent electromagnetic loop parts are one of circles, ellipses and polygons.
Claim 21
Dependent Claim
32 words
A method of frequency-selective electromagnetic wave shielding material claimed in claim 15, wherein said plurality of adjacent electromagnetic loop parts comprise one of electroconductive metals, electroconductive oxides, electroconductive polymers and electroconductive composites.
Claim 22
Dependent Claim
31 words
A method of frequency-selective electromagnetic wave shielding material claimed in claim 15, wherein said plurality of adjacent electroconductive loop parts are not separated by a distance of more than 20 μm.
Claim 23
Dependent Claim
31 words
A method of frequency-selective electromagnetic wave shielding material claimed in claim 15, wherein said plurality of adjacent electroconductive loop parts are not separated by a distance of more than 1 mm.
Claim 24
Dependent Claim
26 words
A method of frequency-selective electromagnetic wave shielding material claimed in claim 15, wherein said plurality of adjacent electroconductive loop parts are allocated in a lattice pattern.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2003-11-14 | 2004-05-15 | 2004-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-14 | 2008-05-15 | 2008-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-14 | 2012-05-15 | 2012-11-14 | $7700.00 | Window Closed / Lapsed |