Patent ID: 7510991

Claim:
A noise suppressor for effectively absorbing or suppressing noise, and reshaping or filtering the waveform glitch of electronic signals, said noise suppressor comprising Aluminum Oxide (Al 2 O 3 ) and several ingredients that are sintered under high temperature to transform the Aluminum Oxide (Al 2 O 3 ) and said ingredients to ceramics with capability of suppressing noise of electronic signals, wherein said noise suppressor is attached to a place where the noise needs to be suppressed, and the Aluminum Oxide (Al 2 O 3 ) and said ingredients are present in the following weight percentages: Aluminum Oxide (Al 2 O 3 ) 70-95; Ferric Oxide (Fe 2 O 3 ) 1.0-4.0; Manganese Oxide (MnO) 0.7-3.5; Silicon Oxide (SiO 2 ) 0.7-3.5; Cobalt Oxide (Co 3 O 4 ) 0.5-3.0; Nickel Oxide (NiO) 0.5-3.0; Chromium Oxide (Cr 2 O 3 ) 0.3-3.0; Copper Oxide (CuO) 0.3-3.0; Titanium Oxide (TiO 2 ) 0.3-3.0; Magnesium Oxide (MgO) less than 1.5; and Calcium Oxide (CaO) less than 1.0.