Patent application number | Description | Published |
20090068545 | METHOD OF MANUFACTURING CELLULOSE ELECTRODE FOR FUEL CELLS, CELLULOSE ELECTRODE MANUFACTURED THEREBY, AND USE OF CELLULOSE FIBERS AS FUEL CELL ELECTRODES - Disclosed is a novel cellulose electrode having high performance, which is capable of substituting for carbon paper used as a conventional fuel cell electrode. A method of manufacturing the cellulose electrode includes cutting cellulose fibers to a predetermined length and binding the fibers, or directly weaving the fibers, thus producing a cellulose sheet, directly growing carbon nanotubes on the cellulose sheet, and supporting a platinum nano-catalyst on the surface of the carbon nanotubes using chemical vapor deposition. An electrode including the cellulose fibers and use of cellulose fibers as fuel cell electrodes are also provided. As a novel functional material for fuel cell electrodes, porous cellulose fibers having micropores are used, thereby reducing electrode manufacturing costs and improving electrode performance. | 03-12-2009 |
20090074633 | Microtubular honeycomb carbon material obtained by heat-treating cellulose fiber, production method of thereof, microtubular reactor module comprising the microtubular honeycomb carbon material and method for producing the microtubular reactor module - Disclosed herein are a microtubular honeycomb carbon material obtained by heat-treating cellulose fiber, a production method thereof, a microtubular reactor module fabricated using the microtubular honeycomb carbon, a method for producing the microtubular reactor module, and a microcatalytic reactor system comprising the microtubular reactor module. A carbon material having a new structure is produced by heat-treating cellulose fiber, and a catalytic reactor system having a new structure is constructed by coating the surface of the carbon material with a metal catalyst. Cellulose carbide, used as the reactor material, is very simple to produce. Because it has a micro honeycomb structure having a large number of microchannels and a large number of mesopores, it can be loaded with a large amount of a catalyst compared to the prior material having the same area, and thus it is useful as a catalyst support, and the reaction efficiency can be maximized. Also, the microcatalytic reactor system can be used in applications including very small steam reformer systems that use biomass fuel such as ethanol, fuel cell reactor systems, VOC and low-concentration-hydrogen treatment systems operable below 200 □, micro heat exchangers, and natural gas reformer systems. Thus, the invention is a useful, industrially applicable invention. | 03-19-2009 |
20090197994 | ALGAE FIBER-REINFORCED BICOMPOSITE AND METHOD FOR PREPARING THE SAME - Disclosed herein are an environmentally-friendly biocomposite prepared from a mixture, as a reinforcement, of algae fibers extracted from algae and a polymeric reagent by means of high-temperature compression-molding, and a method for preparing the biocomposite. | 08-06-2009 |
20090246511 | CELLULOSE CARBIDE MATERIAL HAVING GRAPHITE NANOLAYER AND SYNTHESIS METHOD THEREOF - Disclosed herein is a cellulose carbide material having a graphite nanosized surface layer directly carbonized from a cellulose fiber, and a method of synthesizing a cellulose carbide material having a graphite nanolayer on a surface thereof, including: i) heating a cellulose fiber in a reactor; ii) forming a primary carbide while maintaining temperature of the reactor; iii) cooling the formed primary carbide; iv) heating the cooled primary carbide; v) forming a secondary carbide while maintaining temperature of the reactor; vi) cooling the formed secondary carbide. | 10-01-2009 |
20110159221 | INORGANIC HOLLOW YARNS AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a method of manufacturing inorganic hollow yarns, such as cermets, oxide-non oxide composites, poorly sinterable non-oxides, and the like, at low costs. The method includes preparing a composition comprising a self-propagating high temperature reactant, a polymer and a dispersant, wet-spinning the composition through a spinneret to form wet-spun yarns, washing and drying the wet-spun yarns to form polymer-self propagating high temperature reactant hollow yarns, and heat-treating the polymer-self propagating high temperature reactant hollow yarns to remove a polymeric component from the polymer-self propagating high temperature reactant hollow yarns while inducing self-propagating high temperature reaction of the self-propagating high temperature reactant to form inorganic hollow yarns. The composition comprises 45˜60 wt % of the self-propagating high temperature reactant, 6˜17 wt % of the polymer, 0.1˜4 wt % of the dispersant, and the balance of an organic solvent. | 06-30-2011 |
20120009120 | THERMAL CRACKING RESISTANT ZEOLITE MEMBRANE AND METHOD OF FABRICATING THE SAME - The present disclosure relates to a thermal cracking resistant zeolite membrane and a method of fabricating the same. The method includes dissolving an alumina-based material, a silica-based material and sodium hydroxide in water to prepare an aqueous solution, stirring the aqueous solution to form a hydrothermal solution, preparing a slurry of zeolite seeds through wet-type vibration pulverization and centrifugal separation of zeolite powder, passing the zeolite seeds through a support by vacuum filtration such that the zeolite seeds can be infiltrated into an inner region of the support ranging from a depth of 3 μm to a depth corresponding to 50% of a total thickness of the support, and immersing the support into the hydrothermal solution for hydrothermal treatment to grow a dense zeolite separation layer not only on the surface of the support but also on the inner region thereof. The zeolite membrane prevents the occurrence of thermal cracking on the zeolite separation layer, thereby providing good thermal stability and separation performance during heating and at a target processing temperature. | 01-12-2012 |
20130207033 | Method for Preparing Carbon Dioxide Absorbent Based on Natural Biomass and Carbon Dioxide Absorbent Based on Natural Biomass Prepared by the Same - A method for preparing a carbon dioxide absorbent based on natural biomass, and a carbon dioxide absorbent based on natural biomass that is prepared by the method. The method utilizes alkali metal or alkaline earth metal components, such as Ca, Ma and K, inherent to a natural plant biomass material. The method can provide a carbon dioxide absorbent with improved performance in an environmentally friendly manner at greatly reduced cost. | 08-15-2013 |
20130277882 | INORGANIC HOLLOW YARNS AND METHOD OF MANUFACTURING THE SAME - Disclosed herein is a method of manufacturing inorganic hollow yarns, such as cermets, oxide-non oxide composites, poorly sinterable non-oxides, and the like, at low costs. The method includes preparing a composition comprising a self-propagating high temperature reactant, a polymer and a dispersant, wet-spinning the composition through a spinneret to form wet-spun yarns, washing and drying the wet-spun yarns to form polymer-self propagating high temperature reactant hollow yarns, and heat-treating the polymer-self propagating high temperature reactant hollow yarns to remove a polymeric component from the polymer-self propagating high temperature reactant hollow yarns while inducing self-propagating high temperature reaction of the self-propagating high temperature reactant to form inorganic hollow yarns. The composition comprises 45˜60 wt % of the self-propagating high temperature reactant, 6˜17 wt % of the polymer, 0.1˜4 wt % of the dispersant, and the balance of an organic solvent. | 10-24-2013 |
20140057779 | METHOD OF PREPARING MULTICOMPONENT METAL-HYBRID NANOCOMPOSITE USING CO-GASIFICATION, AND MULTICOMPONENT METAL-HYBRID NANOCOMPOSITE PREPARED THEREBY - The present subject matter provides a method of preparing a multicomponent metal-hybrid nanocomposite using co-gasification, in which a multicomponent metal-hybrid nanocomposite can be prepared by a one-step process without using a complicated process including the steps of supporting-drying-calcining-annealing and the like at the time of preparing a conventional alloy catalyst, and provides a multicomponent metal-hybrid nanocomposite prepared by the method. The method is advantageous in that a multicomponent metal-hybrid nanocomposite can be synthesized by a simple process of simultaneously gasifying two kinds of metal precursors, and in that an additional post-treatment process is not required. | 02-27-2014 |
Patent application number | Description | Published |
20090121296 | Semiconductor device including dummy gate part and method of fabricating the same - In a reliable semiconductor device and a method of fabricating the semiconductor device, a difference in height between upper surfaces of a cell region and a peripheral region (also referred to as a level difference) is minimized by optimizing dummy gate parts. The semiconductor device includes a semiconductor substrate including a cell region and a peripheral region surrounding the cell region, a plurality of dummy active regions surrounded by a device isolating region and formed apart from each other, and a plurality of dummy gate parts formed on the dummy active regions and on the device isolating regions located between the dummy active regions, wherein each of the dummy gate parts covers two or more of the dummy active regions. | 05-14-2009 |
20090262580 | FLASH MEMORY DEVICE ADAPTED TO PREVENT READ FAILURES DUE TO DUMMY STRINGS - In a NAND flash memory device, a dummy NAND string is arranged between a plurality of normal NAND strings. A dummy bit line connected to the dummy NAND string is formed and/or controlled such that when program voltages are applied to the normal NAND strings, memory cells within the dummy NAND string are not programmed. | 10-22-2009 |
20090309147 | Semiconductor memory device and method of fabricating the same - Provided are a semiconductor memory device whereby generation of dishing during planarization of a peripheral circuit region is suppressed, and a method of fabricating the semiconductor memory device. The semiconductor memory device includes a semiconductor substrate comprising a first active area in a memory cell region and a second active area in a peripheral circuit region; a plurality of first isolation films and a plurality of second isolation films protruding from a surface of the semiconductor substrate and defining the first active area and the second active area, respectively; and at least one polish stopper film formed within the second active area and protruding from the surface of the semiconductor substrate. | 12-17-2009 |
20110303965 | SEMICONDUCTOR DEVICES - A semiconductor device and method of manufacturing a semiconductor device include a plurality of first active regions and a second active region being formed on a substrate. The second active region is formed between two of the first active regions. A plurality of gate structures is formed on respective first active regions. A dummy gate structure is formed on the second active region, and a first voltage is applied to the dummy gate structure. | 12-15-2011 |
20120028435 | SEMICONDUCTOR DEVICE INCLUDING DUMMY GATE PART AND METHOD OF FABRICATING THE SAME - In a reliable semiconductor device and a method of fabricating the semiconductor device, a difference in height between upper surfaces of a cell region and a peripheral region (also referred to as a level difference) is minimized by optimizing dummy gate parts. The semiconductor device includes a semiconductor substrate including a cell region and a peripheral region surrounding the cell region, a plurality of dummy active regions surrounded by a device isolating region and formed apart from each other, and a plurality of dummy gate parts formed on the dummy active regions and on the device isolating regions located between the dummy active regions, wherein each of the dummy gate parts covers two or more of the dummy active regions. | 02-02-2012 |
Patent application number | Description | Published |
20110196915 | METHOD AND APPARATUS FOR USING SERVICE OF HOME NETWORK DEVICE BASED ON REMOTE ACCESS - A method and apparatus for using a service provided by a universal plug and play (UPnP) device of a home network, based on a user interface (UI) received by a client located outside of the home network from a server for managing at least one UI for a remote access. | 08-11-2011 |
20120190295 | METHOD AND APPARATUS FOR PROVIDING AND RECEIVING DISASTER INFORMATION - A method and apparatus for receiving and providing disaster information. The method of providing the disaster information includes: classifying a disaster service district into a plurality of emergency zones according to a danger level; transmitting information regarding the plurality of emergency zones to at least one mobile terminal located within the plurality of emergency zones, and receiving a location of the at least one mobile terminal from the at least one mobile terminal; and sequentially transmitting disaster information according to the danger level, to the at least one mobile terminal in the plurality of emergency zones, based on the location of a disaster which has been received from a disaster information server, when a disaster occurs. | 07-26-2012 |
20120191407 | METHOD AND APPARATUS FOR MANAGING LOCATION OF WARD - A method and apparatus for managing a location of a ward, the method including: determining a ward location updating period based on a current location of the ward within a safety zone; and if the determined location updating period is about to elapse, transmitting the current location of the ward at a time when the updating period elapses. | 07-26-2012 |
20120197488 | SERVER AND METHOD OF PROVIDING SERVER-BASED CAR SECURITY SERVICE, CAR DEVICE AND METHOD OF USING SERVER-BASED CAR SECURITY SERVICE, USER DEVICE AND METHOD OF USING SERVER-BASED CAR SECURITY SERVICE - A server-based car security service provides for image and position information to be provided to the server. The server uses the image information to make an authorization determination with respect to the current user. When the user is determined by the server to be an unauthorized user, the server alerts the owner or primary user of the car by sending the alert to a remote user device. The user device displays the image of the current user, and the owner has the opportunity to indicate whether the user is actually an unauthorized user or whether the determination at the server was a misrecognition error. When the user is unauthorized, the owner can request real-time monitoring of the car's position, and also the image inside the car, as well as an outside-of-the-car image. | 08-02-2012 |
20130091558 | METHOD AND SYSTEM FOR SHARING MULTIMEDIA CONTENTS BETWEEN DEVICES IN CLOUD NETWORK - A method and system for sharing contents between devices registered in a cloud system. A cloud server in the cloud system includes a web server for controlling access of a first device to the cloud server; a cloud control unit for controlling networking between devices registered in the cloud server and a content server having access to the cloud server; a device management unit for managing information regarding the first device and the registered devices; and a context recognition management unit for managing context information of the first device and the registered devices. | 04-11-2013 |
20140101270 | ELECTRONIC APPARATUS, SERVER, AND CONTROL METHOD OF SYSTEM - An electronic apparatus connected to a server providing real-time messaging through a messaging channel to communicate therewith is provided. The apparatus includes a client communication unit for communicating with the server and at least one external device, the electronic apparatus and the at least one external device forming a client group, and a client controller for classifying the electronic apparatus and the at least one external device in the client group into a header client connected with the messaging channel to the server and a node client, and for controlling the header client to transmit a message about the node client from the server to the node client when the message from the server is transmitted to the header client through the messaging channel. | 04-10-2014 |
20140201262 | USER DEVICE, COMMUNICATION SERVER AND CONTROL METHOD THEREOF - User devices, a communication server and a control method are provided. The control method of the user devices includes registering the user devices to a communication server that provides a service of a virtual device network, receiving a virtual Internet Protocol (IP) address of a counterpart device included in the virtual device network from the communication server, determining whether an application attempts to perform data communication with the counterpart device using the virtual IP address, and performing the data communication with the counterpart device according to information provided from the communication server if the application attempts to perform data communication with the counterpart device using the virtual IP address. | 07-17-2014 |