PATENT

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    Changzhou AMT Co.,Ltd are continuously developing new state of the art technology for acoustic applications, and by using our more than 20 years design experiences we have managed to innovate technologies so we have been needed to apply for more than 100 patents.
    Patent.No Patent.Type Patent.Name Application.Date Registration Authority
    201220441685X Utility model A balanced armature unit used for loudspeaker devices 2012-9-3 SIPO
    2017103057749 Invention Diaphragm and its production method 2017-5-3 SIPO
    2016108742511 Invention Speaker and its voice coil 2016-9-30 SIPO
    2016108571077 Invention A ball top and electroacoustic transducer for an electroacoustic transducer 2016-9-27 SIPO
    2016106270287 Invention Diaphragm and its coating method 2016-8-2 SIPO
    201610628763x Invention Vibration membrane and its preparation method 2016-8-2 SIPO
    2016100188912 Invention Vibration film making process of moving iron unit 2016-1-12 SIPO
    2015101763809 Invention An assembly fixture and assembly method for coils and balanced armature units 2015-4-14 SIPO
    2015101764619 Invention A method for making and treating iron of balanced armature unit 2015-4-14 SIPO
    2015100676786 Invention An efficient method for producing diaphragm of balanced armature units 2015-2-9 SIPO
    2014107350260 Invention A production process of vibration film of a balanced armature unit 2014-12-4 SIPO
    2014106103891 Invention A balanced armature unit magnetic drive mechanism for reducing low frequency distortion 2014-11-3 SIPO
    2014106106086 Invention A magnetic driving mechanism which improves the low and high frequency performance of the balanced armature unit 2014-11-3 SIPO
    2014105076488 Invention The articulation unit of a type of coaxial earphone with the dynamic and the balanced armature 2014-9-28 SIPO
    2014104593805 Invention A sound component of a headphone or speaker 2014-9-10 SIPO