US5374779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-magnetic wave shielding structure
Assignee: Uniden Corp
•
Filing: 1993-07-08
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Granted: 1994-12-20
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Expires: 2013-07-08
Abstract
Abstract For sufficiently shielding an undesired electro-magnetic wave from penetrating into a communication apparatus, for instance, a car telephone through stray coupling, or leaks therefrom, an electronic circuit substrate and a case of the communication apparatus are formed of flat plates which consist of insulating material comprising magnetic material. One side surface of the flat plates are covered with conductive films. The communication apparatus itself is accommodated in the case and an electric power source connecting cable is wrapped by a similar arrangement, so as to remarkably reduce obstructions caused by undesired waves and other communications in comparison with the conventional arrangement.
Inventors
- 👤 Yoshihiro Konishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:36
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0088; H04; H04B; H04B15/00; H04B15/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
94 words
An electro-magnetic wave shielding structure for an electronic device, said shielding structure comprising: a case, defining a hollow interior, comprising a first insulation material including first magnetic material which causes magnetic loss in at least one superficial portion of said case; a conductive film disposed on said superficial portion of said case; and a housing, for housing at least a portion of said electronic device, disposed within said hollow interior, said housing comprising a second insulation material including second magnetic material which causes magnetic loss in at least one superficial portion of said housing.
Claim 2
Dependent Claim
94 words
An electro-magnetic wave shielding structure for an electronic device, said shielding structure comprising: a case, defining a hollow interior, comprising a first insulation material including first magnetic material which causes magnetic loss in at least one superficial portion of said case; a conductive film disposed on said superficial portion of said case; and a housing, for housing at least a portion of said electronic device, disposed within said hollow interior, said housing comprising a second insulation material including second magnetic material which causes magnetic loss in at least one superficial portion of said housing.
Claim 3
Dependent Claim
49 words
An electro-magnetic wave shielding structure as claimed in claim 1, wherein an electric power source cable for supplying power to said electronic device is wrapped by an outer clothing formed of flexible insulating material comprising magnetic material, an inner face of said clothing being covered with a conductive film.
Claim 4
Dependent Claim
18 words
An electro-magnetic wave shielding structure as claimed in claim 1, wherein said case has a window formed therethrough.
Claim 5
Dependent Claim
18 words
An electro-magnetic wave shielding structure as claimed in claim 1, wherein said case is formed of flat plates.
Claim 6
Dependent Claim
22 words
An electro-magnetic wave shielding structure as claimed in claim 1, wherein said first insulating material is identical to said second insulating material.
Claim 7
Dependent Claim
31 words
An electro-magnetic wave shielding structure as claimed in claim 1, wherein said first magnetic material comprises ferri-magnetic powder and said first insulation material is intermixed substantially uniformly with said ferri-magnetic powder.
Claim 8
Dependent Claim
31 words
An electro-magnetic wave shielding structure as claimed in claim 6, wherein said second magnetic material comprises ferri-magnetic powder and said second insulation material is intermixed substantially uniformly with said ferri-magnetic powder.
Claim 9
Dependent Claim
21 words
An electro-magnetic wave shielding structure as claimed in claim 1, further comprising a ferrite intermixed paint disposed on said conductive film.
Claim 10
Dependent Claim
94 words
An electro-magnetic wave shielding structure for an electronic communication device, said shielding structure comprising: a case, defining a hollow interior, comprising a first insulation material including first magnetic material which causes magnetic loss in at least one superficial portion of said case; a conductive film disposed on said superficial portion of said case; and a housing, for housing an oscillator of said electronic communication device, disposed within said hollow interior, said housing comprising a second insulation material including second magnetic material which causes magnetic loss in at least one superficial portion of said housing.
Claim 11
Dependent Claim
94 words
An electro-magnetic wave shielding structure for an electronic communication device, said shielding structure comprising: a case, defining a hollow interior, comprising a first insulation material including first magnetic material which causes magnetic loss in at least one superficial portion of said case; a conductive film disposed on said superficial portion of said case; and a housing, for housing an oscillator of said electronic communication device, disposed within said hollow interior, said housing comprising a second insulation material including second magnetic material which causes magnetic loss in at least one superficial portion of said housing.
Claim 12
Dependent Claim
49 words
An electro-magnetic wave shielding structure as claimed in claim 9, wherein an electric power source cable for supplying power to said electronic device is wrapped by an outer clothing formed of flexible insulating material comprising magnetic material, an inner face of said clothing being covered with a conductive film.
Claim 13
Dependent Claim
18 words
An electro-magnetic wave shielding structure as claimed in claim 9, wherein said case has a window formed therethrough.
Claim 14
Dependent Claim
18 words
An electro-magnetic wave shielding structure as claimed in claim 9, wherein said case is formed of flat plates.
Claim 15
Dependent Claim
22 words
An electro-magnetic wave shielding structure as claimed in claim 9, wherein said first insulating material is identical to said second insulating material.
Claim 16
Dependent Claim
31 words
An electro-magnetic wave shielding structure as claimed in claim 9, wherein said first magnetic material comprises ferri-magnetic powder and said first insulation material is intermixed substantially uniformly with said ferri-magnetic powder.
Claim 17
Dependent Claim
31 words
An electro-magnetic wave shielding structure as claimed in claim 14, wherein said second magnetic material comprises ferri-magnetic powder and said second insulation material is intermixed substantially uniformly with said ferri-magnetic powder.
Claim 18
Dependent Claim
21 words
An electro-magnetic wave shielding structure as claimed in claim 9, further comprising a ferrite intermixed paint disposed on said conductive film.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-19 | 1998-06-20 | 1998-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-19 | 2002-06-20 | 2002-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-19 | 2006-06-20 | 2006-12-20 | $7700.00 | Window Closed / Lapsed |