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Class 181/170 - Laminated type


Subclass of Class 181 - Acoustics
Definition: Subject matter comprising plural layers or surfaces, adhered
No. of applications: 5
Last issue date: 11/10/2011


Application No.Application TitleIssue Date
20110272208COMPOUND MEMBRANE AND ACOUSTIC DEVICE USING SAME
The present invention provides a compound membrane and an acoustic device including such a compound membrane. The compound membrane includes a central layer, a first glue layer attached to one side of the central layer, a second glue layer attached to another side of th...
11/10/2011
20100108433ELECTROACOUSTIC TRANSDUCER DIAPHRAGM
A method for manufacturing an electroacoustic transducer diaphragm of a multilayered structure which includes a first diaphragm layer made from a synthetic resin material and molded into a predetermined shape through injection molding, and a second diaphragm layer lamin...
05/06/2010
20060266577Speaker diaphragm and speaker structure
A speaker diaphragm includes a base material impregnated with a thermosetting resin composition. The base material includes a first surface material, a core material, and a second surface material in the stated order; the first surface material and the second surface ma...
11/30/2006
20050211499Loudspeaker diaphragm
A loudspeaker diaphragm for converting fluctuating electric energy into acoustic energy is made of a composite of paper, fiber material, plastic, laminate, metal foil, or a combination of the afore-mentioned materials, and elastic plastic foam he composite may hereby be...
09/29/2005
20050051380Speaker diaphragm and speaker using the diaphram
A speaker diaphragm outputting a voice with vibrations of a voice coil, includes a base substance and a polyethylene naphthalate fiber sheet laminated on the base substance. The polyethylene naphthalate fiber sheet includes a polyethylene naphthalate fiber impregnated w...
03/10/2005
 
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