Telecommunication apparatus having electromagnetic wave absorbing device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Dec 20, 2001
app pub date -
Jan 26, 2001
filing date -
Jan 28, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A mobile telecommunication apparatus comprises a front cover defining a display opening, wherein the front cover includes a front and rear surface; and at least one electromagnetic energy absorbing ferrite disposed near the rear surface and display opening of the front cover, wherein the ferrite comprises about 80 to 85 wt. % of Fe.sub.2O.sub.3, about 9 to 15 wt. % of MnO.sub.2, about 8 to 10 wt. % of ZnO and 1 to 3 wt. % of SiO.sub.2. Preferably, four ferrites are attached to the rear surface of the front cover near each corner of the display opening. Each ferrite has a weight of about 0.1 to 0.3 grams, and preferably, about 0.2 grams.
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