Patent ID: 8728353
Filing Date: 2014-05-20
Classification: C01B,H05K

Abstract:
1. An electromagnetic shielding member comprising a burned plant material formed by adjusting any of carbon content, burning temperature and median diameter of the burned plant material, wherein the burned plant material is selected from the group consisting of burned soybean hulls, burned rapeseed meal, burned sesame meal, burned cotton seed meal, burned cotton hulls, burned grain, burned rice husk and burned rice bran, and the electromagnetic shielding member has an electromagnetic shielding effectiveness of 20 dB or above at a frequency band of 1000 MHz or below, and either an electromagnetic wave absorption of 20 dB or above at a frequency band of 4200 MHz to 8000 MHz or an electromagnetic wave absorption of 20 dB or above at a frequency band of 6800 MHz or above.