| Patent application number | Description | Published |
|---|
| 20090234140 | METHOD FOR SEPARATING OF OPTICALLY PURE THIOPHENE COMPOUNDS USING SIMULATED MOVING BED CHROMATOGRAPHY - Disclosed herein is a method of producing an optically active thiophene-based compound using a simulated moving bed adsorption separation process, and more specifically, a method of continuously separating a racemic thiophene-based compound into its optically active thiophene-based compounds having high purity, through optical resolution using the simulated moving bed process. According to the method of the current invention, a racemic mixture of a thiophene-based compound can be continuously separated into its optically active thiophene-based compounds having high purity, which is an intermediate of optically active dorzolamide acting as a topical therapeutic agent for glaucoma, using a simulated moving bed adsorption separation technique, thereby increasing industrial usability. | 09-17-2009 |
| 20110089080 | PROCESS FOR MANUFACTURING HIGH QUALITY NAPHTHENIC BASE OILS - A method of manufacturing high-quality naphthenic base oils comprising a high aromatic content and a large amount of impurities with a boiling point higher than that of gasoline. High-quality naphthenic base oil may be manufactured from light cycle oil (LCO) and slurry oil (SLO), which are inexpensive, and have a high aromatic content, a large amount of impurities, and which are effluents of a fluidized catalytic cracking (FCC) unit. The method also relates to the pretreatment process of a feedstock, where the amounts of impurities (sulfur, nitrogen, polynuclear aromatic compounds and various metals components) in the feedstock are reduced. | 04-21-2011 |
| Patent application number | Description | Published |
|---|
| 20080209672 | Upright type cleaner - An upright type cleaner that uniformly provides a suction force through the whole area of a suction port. The upright type cleaner includes a body having a fan motor that generates suction force, a suction brush provided at a lower portion of the body and having a suction port to perform a cleaning operation relative to a floor using the suction force, a rotating drum installed in the suction brush, a belt connected between the rotating drum and the fan motor, a belt cover that guides the belt and divides the suction port into two suction areas, and a connection path through which the two suction areas are communicated to each other about the belt cover. | 09-04-2008 |
| 20080220713 | Air conditioner having outlet port - Disclosed herein is an air conditioner in which the structure of an outlet port is improved to prevent dew condensation at the outlet port. The air conditioner includes an outlet port to discharge air and a guide forming a discharge channel to guide air to the outlet port side. The guide is formed in a step shape to expand the discharge channel. The air conditioner has the effect of preventing dew condensation at the outlet port. | 09-11-2008 |
| 20090064708 | Oil separator for air conditioner - An oil separator for an air conditioner includes a cylindrical housing; a refrigerant discharge pipe communicating with the housing for discharging refrigerant gas; an oil discharge pipe for circulating oil collected in the lower portion of the housing; and a refrigerant inflow pipe having one end facing the inner surface of a side wall of the housing in the tangential direction for supplying a refrigerant-oil mixture to the inside of the housing. An insertion hole, into which the refrigerant inflow pipe is inserted, is easily formed, the efficiency of the oil separator is increased, and noise and vibration generated from the oil separator is reduced. | 03-12-2009 |
| 20090217483 | UPRIGHT TYPE CLEANER - Disclosed is a fixing structure of a subsidiary suction device of an upright type cleaner. The upright type cleaner includes a base provided with a suction port; a main body connected to the base; and a wand assembly detachably attached to the main body, and the wand assembly is rotated in one direction under the condition that the wand assembly is supported by the main body, and thus is mounted on the main body. | 09-03-2009 |
| 20100005611 | CLEANER - Disclosed is a cleaner, which has an improved channel conversion structure. The cleaner includes a first suction channel and a second suction channel, which are selectively opened and closed, and suck external foreign substances, and a first valve and a second valve, which are respectively rotated from the upstream portion of a flow to the downstream portion of the flow and thus close the first channel and the second channel. | 01-14-2010 |
