US5198290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic wave shielding material
Assignee: Individual
•
Filing: 1990-11-14
•
Granted: 1993-03-30
•
Expires: 2010-11-14
Abstract
Abstract Disclosed is an electromagnetic wave shielding material comprising a flexible base fabric, a first metallic film formed by flame-spraying a metal such as zinc on one side of said base fabric and a second metallic film such as an aluminum foil formed on the other side of said base fabric; said first metallic film does not peel after long lapse of time and can provide sufficient shielding effect to be used in unechoic chambers etc.
Inventors
- 👤 Yoshio Niioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:35
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/14; C; C23; C23C; C23C4/00; G; G01; G01R; G01R29/00; G01R29/08; G01R29/10; G01R29/105; H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0088; B32B2250/00; B32B2250/04; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/10; B32B2307/102; B32B2307/20; B32B2307/212; B32B2310/00; B32B2310/04; B32B2310/0445; B32B2311/00; B32B2311/20; B32B2311/24; B32B2315/00; B32B2315/08; B32B2315/085; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T442/00; Y10T442/60; Y10T442/654; Y10T442/656
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
An electromagnetic wave shielding material comprising: a flexible base fabric made of glass cloth; a first metallic film made of zinc formed on one side of said base fabric by flame spraying; felt sound insulation members provided on an other side of said base fabric and on an outer surface of said first metallic film, respectively; and a second metallic film member made of a metal selected from the group consisting of foil and lead plate bonded on an outer surface of the sound insulation member provided on said first metallic film.
Claim 2
Dependent Claim
92 words
An electromagnetic wave shielding material comprising: a flexible base fabric made of glass cloth; a first metallic film made of zinc formed on one side of said base fabric by flame spraying; felt sound insulation members provided on an other side of said base fabric and on an outer surface of said first metallic film, respectively; and a second metallic film member made of a metal selected from the group consisting of foil and lead plate bonded on an outer surface of the sound insulation member provided on said first metallic film.
Claim 3
Dependent Claim
18 words
The electromagnetic wave shielding material according to claim 1, wherein the second metallic film is an aluminum foil.
References Cited (Backward Citations)
US3055768A
Cited
US3086879A
Cited
US4435465A
Cited
US4375493A
Cited
US4401707A
Cited
US4785136A
Cited
US4808465A
Cited
JPS63249775A
Cited
US4913978A
Cited
US4980564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |