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Patent Searching and Data


Title:
BUILDING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/073116
Kind Code:
A3
Abstract:
The present invention relates to a building material (110) comprising at least one electrically conductive low emissivity surface (103) provided with an opening (203) for boosting the transmission of an electromagnetic signal through the building material, the opening having a substantially lower electrical conductivity than the low emissivity surface (103). The edge of the opening (203) provided in said low emissivity surface (103) constitutes at least one closed edge curve (223), and said opening (203) defines a closed envelope curve (224) so that said opening (203) is within the closed envelope curve (224), and the surface defined by the closed envelope curve (224) has an area substantially larger than the area of the opening (203) within the closed envelope curve (224) and a length substantially smaller than the length of the closed edge curve (223), whereby at least one such low emissivity surface (103) area (231) is formed within the area defined by the closed envelope curve (224), at which the closed envelope curve (224) is not congruent with the edge curve (223).

Inventors:
LILJA, Juha (Isolammenkatu 11 C 7, TAMPERE, 33710, FI)
Application Number:
FI2018/050719
Publication Date:
May 23, 2019
Filing Date:
October 08, 2018
Export Citation:
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Assignee:
STEALTHCASE OY (Verstaankatu 3 D 39, TAMPERE, 33100, FI)
International Classes:
E06B3/67; B32B17/10; C03C17/06; C03C17/36; E04B1/76; E06B7/00; H01Q13/10; H01Q15/00; H01Q21/28; H04B7/145
Domestic Patent References:
WO2016121375A12016-08-04
WO2017129855A12017-08-03
Foreign References:
US20170250456A12017-08-31
US20120098628A12012-04-26
JP2013038581A2013-02-21
US20070187382A12007-08-16
US20040107641A12004-06-10
US20170272145A12017-09-21
Other References:
BANIYA, A.: "Assessment of frequency selective surface for improving indoor cellular coverage", MASTER'S THESIS, 13 August 2014 (2014-08-13), pages 1 - 82, XP055407337, Retrieved from the Internet [retrieved on 20180508]
Attorney, Agent or Firm:
BERGGREN OY (Visiokatu 1, TAMPERE, 33720, FI)
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