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Ching-Wen Chang, Taichung TW

Ching-Wen Chang, Taichung TW

Patent application numberDescriptionPublished
20090136073Microphone - A microphone having a first shell with a cavity region is disclosed. A PCB and a sound receiving member are mounted within the cavity region. A brace is disposed over the cavity region having opposite ribs located against two opposite sides of the PCB. A push button is operably mounted on the brace and is adapted to be moveably operated to actuate the PCB ON or OFF.05-28-2009
20090136074Earphone and the Method of Making thereof - An earphone and its method of making are disclosed. The earphone comprises a first shell and a second shell joined thereto to form a housing. A sound pressure releasing path is defined in the housing. A loudspeaker is disposed in the housing. A strain relief collar is securely clasped between the first and second shells, and the strain relief collar has an inner molded body and an outer molded body. The inner molded body having a hardness, and the outer molded body has a hardness lesser than that of the inner molded body. A cord has an end connected to the loudspeaker, a portion encompassed by the strain relief collar and a portion extended out of the strain relief collar, wherein the sound pressure releasing path allows sound air waves to exit the earphone to the atmosphere when the loudspeaker imposes sound to the ear.05-28-2009
20110070366PROCESS FOR MANUFACTURING A HEAT INSULATION CONTAINER - A process for manufacturing a heat insulation container mainly includes preparing a coating material by mixing a binder and a thermo-expandable powder, coating such coating material on a surface of a container and then heating the container to foam the coated material. The foamed coating material is therefore provides the container with heat insulation property. The thermo-expandable powder consists of a plurality of thermo-expandable microcapsules, each of which consists of a thermoplastic polymer shell and a low-boiling-point solvent wrapped by the thermoplastic polymer shell. To obtain a smooth surface, the soften point of the binder is required to be lower than the boiling point of the solvent.03-24-2011
20110081509DEGRADABLE HEAT INSULATION CONTAINER - A container of the present invention includes a paper-made container body, a waterproofing layer and a foaming layer. The container body has an outer surface and an inner surface. The waterproofing layer is coated on the inner surface in the manner of casting. The waterproofing layer mainly consists of talcum powder, resin and calcium carbonate. The foaming layer is disposed on at least a part of the outer surface. The foaming layer consists of a hinder and a thermo-expandable powder. The binder is selected from a group consisting of polyvinyl acetate resin, ethylene vinyl acetate resin, polyacrylic acid resin and a mixture thereof. The thermo-expandable powder consists of a plurality of thermo-expandable microcapsules, each of which consists of a thermoplastic polymer shell and a low-boiling-point solvent wrapped by the thermoplastic polymer shell.04-07-2011
20110247749PROCESS FOR COATING A FOAMED COATING MATERIAL ON A CONTAINER OR THE LIKE - A process for coating a foamed coating material on a container or the like mainly includes preparing a coating material by heat blending or kneading a solid thermoplastic binder with a solid thermo-expandable powder consisting of a plurality of solid thermo-expandable microcapsules till the solid thermoplastic binder being gelatinized so that the thermo-expandable microcapsules being uniformly spread in the gelatinized thermoplastic binder, coating such coating material on a surface of a container and then heating the container to foam the coated material. The foamed coating material is therefore provides the container with heat insulation property.10-13-2011
20110284564DISPOSABLE CUP LID - A disposable cup lid of the present invention includes an engaging portion, a hump portion, a lid surface, and a connection opening. The engaging portion is used for engaging with a cup. At least part of the hump portion is formed annularly inside of the engaging portion. The lid surface is connected to the hump portion. The connection opening is defined on the lid surface, and said connection opening is used to communicate with an interior of the cup. The hump portion is adjacent to the hump portion. A top of the hump portion is higher than the connection opening, and a vertical distance from the top of the hump portion to the connection opening is between 4 to 30 millimeters.11-24-2011
20110305360EARPHONE DEVICE WITH A FUNCION OF SOUND QUALITY REGULATION AND REGULATING METHOD THEREOF - An earphone device with a function of sound quality regulation is provided. The earphone includes a housing, a cover, a speaker and a regulating device. The housing has an accommodating space for receiving the speaker and a plurality of regulating holes for connecting the accommodating space to the outside. One end of the regulating device is fixed on the cover. A blocking portion, which is disposed on the other end of the regulating device and extends into the accommodating space, can partially or completely block the regulating holes when the cover is turned, thereby regulating the leakage between the accommodating space and the outside to achieve different output sound quality.12-15-2011
20120015121METHOD OF FORMING A PIGMENT LAYER AND A FOAM LAYER ON A SUBSTRATE AND A CONTAINER TREATED BY THE SAME - The method of forming a pigment layer and a foam layer on a substrate includes steps of material preparation, material coating, pigment coating and foaming. A coating material layer is coated on the substrate, and then a pigment layer is coated on the substrate before the coating material layer is foamed. Thus the pigment can be coated on the substrate more easily and more accurately.01-19-2012

Patent applications by Ching-Wen Chang, Taichung TW