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Hoon Sik
Hoon Sik Cho, Gimhae-Si Gyeongnam KR
| Patent application number | Description | Published |
|---|---|---|
| 20100154694 | APPARATUS AND METHOD FOR DETECTING AN ENDING-POINT OF BOBBIN THREAD FOR SEWING MACHINE USING BAR CODE - The present invention relates to an apparatus and a method for detecting the ending-point of a bobbin thread for a sewing machine using a bar code, which is capable of alerting a sewing operator of his/her desiring bobbin thread remains when they are left enough to finish sewing under operation. The present invention of the apparatus for detecting the ending-point of a bobbin thread for a sewing machine using a bar code so as to sense the ending-point of a bobbin thread during a sewing operation, comprises a bobbin to wind a bobbin thread therearound and at least one bar code to indicate a position in the surface of a bobbin, of which the bar code is printed on one or both side(s). | 06-24-2010 |
Hoon Sik Kim, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100224063 | AMIDIUM-BASED IONIC LIQUIDS FOR CARBON DIOXIDE ABSORPTION - The present invention relates to a carbon dioxide absorbent, an ionic liquid obtained by reacting amide and an organic acid and a method of using the same. The amidium-based ionic liquid of the present invention has excellent CO | 09-09-2010 |
| 20100326277 | PIPERAZINIUM TRIFLUOROACETATE COMPOUND AND CARBON DIOXIDE ABSORBENT USING THE SAME - The present invention provides a novel piperazinium trifluoroacetate compound prepared by reacting piperazine with trifluoroacetic acid and a carbon dioxide absorbent prepared by dissolving the compound in an ionic liquid or organic solvent. According to the present invention, the carbon dioxide absorbent has excellent carbon dioxide absorption capacity and low solvent loss, and the energy consumption required for the carbon dioxide absorption and desorption is significantly reduced. | 12-30-2010 |
| 20110092758 | Method of Purifying Olefins Using Pyrrolidinium-Based or Piperidinium-Based Ionic Liquids Comprising Copper (I) Halide - The present invention relates to a method of purifying olefin, the method comprising removing a small amount of acetylenic compounds contained in olefin by using pyrrolidinium-based or piperidinium-based ionic liquid mixtures comprising copper (I) halide. According to the method of the present invention, copper (I) halide is stabilized by pyrrolidinium-based or piperidinium-based ionic liquids, suppressing the oxidation of Cu(I) into Cu(II), whereby the capacity of removing acetylenic compounds can be maintained for a long time and the selective removal rate of acetylenic compounds to olefin can be significantly improved. In addition, since the ionic liquid mixtures comprising copper (I) halide used in the method of the present invention can be applied to both absorption and extraction processes, it can effectively remove acetylenic compounds from olefin in a more simple and economical way compared to the existing adsorption and membrane separation processes. | 04-21-2011 |
Hoon Sik Kim, Sangwolgok-Dong KR
| Patent application number | Description | Published |
|---|---|---|
| 20090286976 | ONE-POT SYNTHESIS OF FLUORINATED IONIC LIQUIDS - The present invention relates to a method for one-pot synthesis of ionic liquid with fluoroalkyl group, more particularly to a method for one-pot synthesis of ionic liquid with fluoroalkyl group represented by the following Chemical Formula 1 by adding and reacting a nitrogen-containing compound, a Brønsted acid of the formula YH and a fluoroolefin compound of the formula CFR | 11-19-2009 |
| 20100030007 | METHOD FOR THE REMOVAL OF ACETYLENES FROM OLEFINS USING IONIC LIQUID-BASED SOLUTION - The present invention relates to a process for removing acetylenes from olefins by using an ionic liquid-based solution, and particularly to a process for removing a small amount of acetylenes contained in olefins by using an ionic liquid-based solution where copper halide (CuX, X=halogen atom) is dissolved. In an ionic liquid-based solution used in the present invention, copper halide (CuX) is stabilized by ionic liquid, thus preventing monovalent copper ion (Cu | 02-04-2010 |