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Patent Searching and Data


Title:
SHIELD DEVICE FOR PORTABLE TELEPHONE AND PORTABLE TELEPHONE WITH THE SHIELD DEVICE
Document Type and Number:
Japanese Patent JP2001144527
Kind Code:
A
Abstract:

To provide a shield device for a portable telephone and a portable telephone with the shield device that can shield radio waves arrived from sur rounding base stations with the shield plate even when the shield plate and the portable telephone are placed at a high altitude place such as a mountain top a high spot as in a building and receive radio waves from many base stations, and can reliably select one base station and communicate therewith.

The shield device 1 that is placed at a high altitude place such as a mountain top or a high spot as in a building and can select a radio wave from a required base station among arrived radio waves of base stations 91-96, consists of a shield section 2 that shield the radio waves and a portable telephone mount section 3 that accommodates portable telephone 7. The shield section 2 consists of a plate such as a metallic plate like an aluminum plate or the like or a plastic plate to which a metallic foil is adhered, coated or vapor-deposited.


Inventors:
AKINAGA TADAHIKO
OGATA KAZUYUKI
TANIGUCHI YASUSHI
Application Number:
JP32663999A
Publication Date:
May 25, 2001
Filing Date:
November 17, 1999
Export Citation:
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Assignee:
HITACHI DENSHI SERVICE KK
International Classes:
H05K9/00; H01Q15/14; H04B7/26; (IPC1-7): H01Q15/14; H04B7/26; H05K9/00
Attorney, Agent or Firm:
Yoshiaki Numagata (3 outside)