Electromagnetic wave absorber

Details Electromagnetic wave absorber Electromagnetic wave absorber

2005-03-22

2005-03-22

Dawson, Robert (Department: 1712)

Stock material or miscellaneous articles

Composite

Of silicon containing

C428S447000, C524S430000, C524S431000, C524S439000, C524S440000, C524S588000

Reexamination Certificate

active

06869683

ABSTRACT:
An electromagnetic wave (EM) absorber is constructed by integrally laminating an EM-absorbing layer having an EM-absorbing filler dispersed in a silicone resin on at least one surface of an EM-reflecting layer having an electrically conductive filler dispersed in a silicone resin. It has satisfactory EM-absorbing and shielding abilities and is workable, flexible, weather resistant and heat resistant due to the nature of the silicone resin itself. The use of the silicone resin in both the EM-absorbing and reflecting layers ensures that a firm bond is established between the layers. In a preferred embodiment wherein a heat conductive filler is blended, the absorber has a satisfactory heat transfer ability as well.

REFERENCES:
patent: 5525408 (1996-06-01), Weir et al.
patent: 5639989 (1997-06-01), Higgins, III
patent: 6514428 (2003-02-01), Suzuki et al.
patent: 20020160725 (2002-10-01), Toyoda et al.
patent: 7-212079 (1995-08-01), None
patent: 3097343 (2000-08-01), None
patent: 2000232296 (2000-08-01), None
“Handbook of Fillers, 2ndEdition”; Wypich, Chem-Tec Publishing 1999-2000, pp 293.

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