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Chang-Yeol
Chang-Yeol Lee, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090219777 | MULTI-CHIP ASSEMBLY AND METHOD FOR DRIVING THE SAME - Disclosed are a multi-chip assembly and a method for driving the same. The multi-chip assembly includes a first chip designed with a first device driven by a first power source and a second chip designed with a second device driven by a second power source. A power applying section applies first power to the first device of the first chip and a power converting section converts the first power to second power upon receiving the first power from the power applying section and applies the second power to the second device of the second chip. It is possible to provide the multi-chip assembly in the form of a package fabricated by stacking chips designed with mutually different devices driven through a single power source. | 09-03-2009 |
| 20100099228 | METHOD FOR REDUCING POLY-DEPLETION IN DUAL GATE CMOS FABRICATION PROCESS - Disclosed is a method for reducing poly-depletion in a dual gate CMOS fabrication process. The method reduces the poly-depletion in a dual gate CMOS fabrication process by increasing the doping efficiency in a gate polysilicon film. In order to increase the doping efficiency, the method employs the following four technical principles. First, the doping efficiency is increased when the dose of N+ ion implantation is increased. Second, the doping efficiency is increased when the thickness of N+ polysilicon is reduced. Third, the increase of depletion caused by the reduction of the channel width is inhibited when the EFH is adjusted to be less than 0. Fourth, the overall doping efficiency is increased when each step of polysilicon deposition and ion implantation is divided into multiple steps. | 04-22-2010 |
| 20110001988 | Apparatus for Measuring Thickness - An apparatus for measuring a thickness, which includes: a first beam splitter for reflecting or transmitting a ray irradiated from an optical source or a ray reflected by a measurement object; a first lens part which condenses a ray to the measurement object and generates a reference ray having a difference of a light path in comparison with a ray reflected by the measurement object; a second lens part for condensing a ray to the object to be measured; an interference light detector which corresponds to at the first lens part so as to form a light path and detects an interference signal generated by the ray reflected by the measurement object and the reference ray; a spectroscopic detector which corresponds to the second lens part so as to form a light path different from the light path formed by the interference light detector and splits the ray reflected by the measurement object so as to detect an intensity and a wavelength of each split ray; and a light path converter for selectively transmitting a ray to one of the interference light detector and the spectroscopic detector, wherein position exchanging is performed between the first lens part and the second lens part. | 01-06-2011 |
Chang-Yeol Lim, Chonan-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110063062 | DISC WOUND TRANSFORMER WITH IMPROVED COOLING - A method of manufacturing a transformer that includes forming a disc-wound coil using a plurality of pre-formed cooling ducts. Each cooling duct may be supported by a support pipe secured between walls of the cooling duct, or by a removable insert. First and second conductor layers are formed, each of which include plurality of disc windings arranged in an axial direction of the disc-wound coil. A spacer layer is formed between the first and second conductor layers to form a plurality of axially-extending passages. The cooling ducts are slid into the axially-extending passages so as to be disposed between the first and second conductor layers. | 03-17-2011 |
Chang-Yeol Yoo, Cheonan-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20080312068 | Nano-sized palladium-doped anion exchange resin catalyst or palladium-doped cation exchange resin catalyst, preparation method thereof and method of removing dissolved oxygen in water using the same - Disclosed are a nano-sized palladium-doped anion exchange resin catalyst or palladium-doped cation exchange resin catalyst, a preparation method thereof and a method of removing dissolved oxygen in water using the same. The palladium-doped anion exchange resin catalyst exhibits high dissolved oxygen removal efficiency of 99˜99.99%, and the palladium-doped cation exchange resin catalyst exhibits high dissolved oxygen removal efficiency of at least 97%, and further, dissolved oxygen in water can be removed through a catalytic reaction without the use of additional chemicals, thereby discharging no secondary pollutants. This catalyst is environmentally friendly, can be continuously developed, and can prevent the loss of the palladium catalyst, which is expensive, and thus can be efficiently applied to various fields, including semiconductors, power plants, microbial culture, food and pharmaceutical production, and the fermentation industry. | 12-18-2008 |
Chang-Yeol Yoon, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20080199658 | Leather Made Of Tuna Skin And The Manufacturing Method Thereof - It is an object of the present invention to provide leather made of tuna skins as a novel material that is distinguished from existing leather material. To achieve such an object, the present invention is characterized in that tuna skins which have been utilized only for general byproducts of tuna is used as a material for leather. The tuna skin leather manufactured in this way has moire patterns unique to tunas created through the splitting process, which in turn provide beauty totally different from that of general leather. In addition, the tuna skin leather is superior in tensile strength and venting property comparing with conventional general leather, thereby making it possible to satisfy the desires of consumers who long for new materials, and to contribute the expansion of leather markets. | 08-21-2008 |