EP 0383142 B1 19940824 - Electromagnetic wave absorbing means and method of making it as well as its utilization.
Title (en)
Electromagnetic wave absorbing means and method of making it as well as its utilization.
Title (de)
Mittel zum Dämpfen elektromagnetischer Wellen, Verfahren zur Herstellung sowie Verwendung des Mittels.
Title (fr)
Moyen pour absorber des ondes électromagnétiques et procédé pour fabriquer ce moyen ainsi que son utilisation.
Publication
Application
Priority
DE 3904576 A 19890215
Abstract (en)
[origin: EP0383142A1] The means for absorbing or attenuating electromagnetic waves in granular form or as a moulded body can be made using gas or foam concrete technology and contains not only air pores and residual quartz, but also hydrated calcium silicate phases containing water of crystallisation, the means predominantly containing hydrated calcium silicate phases having a chemically bound water content and/or a water of crystallisation content of more than 10 mol %. <IMAGE>
IPC 1-7
IPC 8 full level
H01Q 17/00 (2006.01); H05K 9/00 (2006.01)
CPC (source: EP)
H01Q 17/00 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0383142 A1 19900822; EP 0383142 B1 19940824; AT E110497 T1 19940915; DE 59006865 D1 19940929; ES 2018767 A4 19910516; ES 2018767 T3 19941216
DOCDB simple family (application)
EP 90102253 A 19900205; AT 90102253 T 19900205; DE 59006865 T 19900205; ES 90102253 T 19900205