baber/WOPTO huggingface dataset:
Patent KR-20160117775-A (KR)
Title: 정수필터 조립모듈
Inventor: JOO WON IL
IPC: B01D35/30
Filed: 2015-03-31
Abstract: 본 발명에 따른 정수필터 조립모듈은 정수필터의 유입유로관과 유출유로관이 구비되는 헤드부의 체결공간을 구비하는 하우징;과, 상기 체결공간에 배치되고, 상기 유입유로관과 상기 유출유로관을 고정하는 복수개의 피팅부재;와, 상기 하우징에서 이동되게 제공되고, 상기 정수필터의 외주방향으로 연장되어, 상기 피팅부재가 상기 유입유로관 및 상기 유출유로관과의 고정상태를 유지하게 하는 분리방지커버;와, 상기 하우징 일측에 제공되는 확장체결부; 및 복수개의 상기 하우징을 연결하도록, 상기 확장체결부에 체결되는 체결체;를 포함하여 구성될 수 있다.
Patent KR-20160117981-A (KR)
Title: prevention apparatus of contamination by oil spill on the sea
Inventor: HONG SEOK GI
IPC: E02B15/04
Filed: 2015-04-01
Abstract: According to the present invention, a marine oil spill recovery apparatus comprises: a main body unit supported by a buoyant; a storage tank installed in the main body unit and storing recovered leaked oil; a first fence and a second fence installed to be rotated in the opposite directions on both sides of the main body unit; a leaked oil recovery unit installed in the main body unit to recover the leaked oil; and a blower unit supported by a support bracket installed in the first fence and the second fence or installed in the main body unit to move the leaked oil on the sea surface to the leaked oil recovery unit divided by the first fence and the second fence.
Patent KR-20160119402-A (KR)
Inventor: KIM KYU CHEOL
IPC: H04Q1/02
Filed: 2015-04-03
Abstract: The present invention relates to a communication equipment assembling device and a method thereof which enable an additional extension of communication equipment. The communication equipment assembling device comprises: a unit bracket of a horizontally symmetrical shape to which communication equipment is attached; and one pair of main brackets of a vertically symmetrical shape coupled to be separated from each other at a predetermined interval wherein the unit bracket, to which the communication equipment is attached, is fixed and attached to the main brackets. The communication equipment assembling device further comprises a plurality of sub-brackets of a vertically symmetrical shape to which the unit bracket, to which the communication equipment is attached, is fixed and attached wherein the sub-brackets are coupled to the main brackets to extend the communication equipment.
Patent KR-20160119983-A (KR)
Inventor: LEE SANG SOL
IPC: B30B15/30
Filed: 2015-04-07
Abstract: The purpose of the present invention is to provide a press forming device constructed to form a material by lowering a press using a screw that rotates by power of a motor in a mechanical way. In order to achieve this purpose, the press forming device, which combines upper and lower molds, and injects a raw material into the upper and lower molds for formation, comprises: a base on which the lower mold is put; a pair of support frames put on the base; a fixing rack fixed and installed on the top of the support frame; a lead screw which is installed between the support frames in a vertically standing state, and rotates by receiving power of a motor; a split nut which is coupled to an external diameter of the lead screw in a screw type, and vertically moves in accordance with rotation of the lead screw; a lifting rack which is combined with the split nut, and vertically moves by riding the support frames in a state of being supported by the support frames; a press which is installed on the bottom of the lifting rack, and combines the upper and lower molds in accordance with descending motion of the lifting rack; a cup cylinder which is installed between the lifting rack and the fixing rack, shrinks in accordance with continuous descending motion of the lifting rack after the press combines the upper and lower molds, and prevents transmission of the descending pressure of the lifting rack to the press; and an injection port which is positioned between buffering guides, and is inserted into a hole of the press in accordance with the descending motion of the lifting rack to inject a raw material into the upper and lower molds.
Patent KR-20150080454-A (KR)
Inventor: JEONG HEE SEOK
IPC: G06F9/44
Filed: 2015-04-10
Abstract: Disclosed is a user interaction method of a user terminal device including a bent touch screen. The method in the present invention comprises the step of display a UI element relating to an external device on a subarea, when the external device located outside of the user terminal device and the user terminal device are connected to be communicable; and performing a function relating to the UI element corresponding to a user gesture selecting the UI element. Accordingly, various interactions can be performed.
Patent KR-20160121225-A (KR)
Inventor: KIM HAN
IPC: H05K3/42
Filed: 2015-04-10
Abstract: According to an aspect of the present invention, provided is a printed circuit board which comprises: a base unit; a wiring structure formed on at least one of a surface and an internal portion of the base unit; and a plurality of stitching vias formed in an outer edge of the base unit to penetrate the base unit in a thickness direction, wherein sides of the stitching vias are exposed to the outside. Therefore, the printed circuit board can improve electromagnetic wave shielding performance and heat radiation features.
Patent KR-20160123050-A (KR)
Inventor: JOO SEUNG GI
IPC: H01M4/62
Filed: 2015-04-15
Abstract: The present invention relates to a method for manufacturing a lithium secondary battery. One purpose of the present invention is to provide a method for manufacturing a lithium secondary battery which has high capacity characteristics by increasing a contact area between an electrolyte and a cathode active material stuck into pores of a metal foam to substantially lower an internal resistance of the battery, thereby improving an oxidation/reduction reaction rate of lithium. Other purpose of the present invention is to provide a method for manufacturing a lithium secondary battery which is capable of improving charge and discharge capacities and obtaining excellent reliability by preventing the cathode active material from being delaminated from the pores during driving of the battery and increasing a filling rate of a slurry including the cathode active material in the metal foam. A method for manufacturing a lithium secondary battery according to the present invention comprises: a step of preparing a metal foam having a plurality of first pores; a step of filling a slurry prepared by mixing a cathode active material, a binder, a conducting material and an organic solvent into the plurality of first pores of the metal foam; a metal foam cathode realizing step of heat-treating the slurry-filled metal foam at a temperature of 150 to 200 C for 6 to 12 hours, thereby removing the organic solvent and sticking the cathode active material, binder and conducting material to inner side walls of the first pores, and enabling removal of the organic solvent to form second pores having smaller sizes than the first pores in the plurality of first pores at the same time; a step of applying an electrolyte onto the surface of the metal foam cathode to infiltrate the electrolyte into the second pores; and a step of sequentially laminating a separator and an anode onto both sides of the electrolyte-infiltrated metal foam cathode.
Patent KR-20160126353-A (KR)
Title: 모노머, 유기막 조성물, 유기막, 및 패턴형성방법
Inventor: PARK YOU JUNG
IPC: C08G61/00
Filed: 2015-04-23
Abstract: 화학식 1로 표현되는 모노머, 상기 모노머를 포함하는 유기막 조성물, 상기 유기막 조성물로부터 제조된 유기막, 및 상기 유기막 조성물을 사용하는 패턴형성방법에 관한 것이다. 
상기 화학식 1의 정의는 명세서 내에 기재한 바와 같다.
Patent KR-20160126517-A (KR)
Title: 슬래그 다트의 스템 제조방법
Inventor: CHOI CHUNG MAN
IPC: B28B21/14
Filed: 2015-04-24
Abstract: 본 발명은 지관 내부에 기립 고정되는 심재의 수직 직진도를 용이하게 확보할 수 있는 슬래그 다트의 스템 제조방법과  그 방법에 따른 유동방지유닛을 제공할 수 있도록 한 것이다. 
즉, 진동 성형기에 수직설치된 성형몰드에 지관을 삽입하는 단계와; 상기 지관의 내부중심으로 심재를 거꾸로 삽입하되, 선단의 나사봉이 지관 하측 외부로 돌출되도록 하는 단계와; 지관 하측 외부로 돌출된 나사봉을 이용하여 심재를 지관 내부에 수직고정하는 단계와; 상기 지관 내부에 중심구멍 둘레로 여러 개의 관통구멍이 형성된 유동방지유닛을 삽입하여 유동방지유닛 외면 둘레가 지관 내면에 밀착되도록 하는 단계와; 상기 유동방지유닛의 중심구멍으로 심재 상단을 통과시킨 다음 유동방지유닛을 심재에 고정하는 단계와; 상기 지관 내부에 내화물을 진동 충진하는 단계와; 충진된 내화물을 양생하는 단계, 양생 된 내화물을 가진 지관을 탈형하는 단계, 탈형된 지관을 연소하는 단계를 순차적으로 실시하여 스템을 얻을 수 있도록 한 것을 특징으로 방법과, 위 방법의 지관 내경보다 같거나 작은 외경을 가지고, 위 방법의 심재 상단의 외경보다 같거나 큰 중심구멍 둘레에 여러 개의 관통구멍이 형성되는 것을 특징으로 하는 유동방지유닛을 제공할 수 있도록 한 것이다.
Patent KR-20160012893-A (KR)
Title: Esd 보호 기판
Inventor: YOO JIN O
IPC: H05K3/42
Filed: 2015-04-27
Abstract: 본 발명의 일 실시예에 따른 ESD 보호 기판은 기판; 상기 기판에 형성되는 복수의 회로 패턴을 포함하는 패턴층; 및 상기 복수의 회로 패턴 중 서로 절연되어 형성되는 회로 패턴 사이에 형성되는 고전압 통전 물질; 을 포함하고, 상기 고전압 통전 물질은 상기 서로 절연되어 형성되는 회로 패턴 사이에 도포될 수 있다.
Patent KR-20160127590-A (KR)
Title: 상호 연관된 정보를 표현하기 위한 사용자 인터페이스 장치
Inventor: KIM TAE YEON
IPC: G06F3/0488
Filed: 2015-04-27
Abstract: 본 발명은 상호 연관된 정보를 표현하기 위한 사용자 인터페이스 장치에 관한 것으로써, 보다 상세하게는 터치 스크린 등으로부터 터치를 입력받는 사용자 입력 도구를 구비한 인터페이스 장치에서 상호 연관된 범주의 정보들을 사용자의 간단한 조작에 따라 표시부의 주화면과 보조화면 등에 범주, 연관된 정보 및 상세 정보 등을 표시하는 상호 연관된 정보를 표현하기 위한 사용자 인터페이스 장치에 관한 것이다. 
본 발명에 의하면, 주화면 및 보조화면을 포함하는 표시부; 상기 표시부에 나타낼 범주 및 범주가 포함하는 연관된 정보를 설정하고, 범주별로 순위를 나눌수 있는 범주설정부; 터치스크린을 포함하되, 상기 범주설정부를 통해 범주 및 범주가 포함하는 연관된 정보의 설정이 완료된 이후에 상기 터치스크린을 통해서 스와이프를 입력받는 입력부; 상기 입력부를 통해서 입력된 스와이프의 상하방향 또는 좌우방향으로 중 어느 방향으로 이동하는지를 판단하되, 상기 판단된 결과에 따라 주화면 및 보조화면의 내용을 결정하고, 데이터베이스부에 저장되어 있는 유사한 범주의 정보를 불러오는 제어부; 상기 표시부에 나타낼 범주 및 범주가 가지고 있는 유사한 정보 및 상세정보를 저장하는 데이터베이스부;를 포함하는 상호 연관된 정보를 표현하기 위한 사용자 인터페이스 장치를 제공한다.
Patent KR-20160130004-A (KR)
Inventor: KIM MYUNG HWAN
IPC: C08L79/08
Filed: 2015-04-30
Abstract: The present invention provides a liquid crystal display of which the flexibility is secured, a manufacturing process is simplified, and a cost is reduced, and a method for manufacturing the same. According to an embodiment of the present invention, the method for manufacturing a liquid crystal display comprises the steps of: forming a polymer thin film layer on a substrate; forming a thin film transistor (TFT) substrate on the polymer thin film layer; forming a TFT array on the TFT substrate; forming an upper polarizing plate on the TFT substrate on which the TFT array is formed; applying a laser to the polymer thin film layer to remove a portion of the polymer thin film layer and the substrate; bonding an adhesive layer to a rear surface of the polymer thin film layer from which the substrate is separated; and attaching the polymer thin film layer, to which the adhesive layer is bonded, to a lower polarizing plate.
Patent KR-20160133337-A (KR)
Title: 금속재의 정밀 스트레칭 장치 및 그 이용방법
Inventor: PARK KYEONG MI
IPC: B21D25/04
Filed: 2015-05-12
Abstract: 본 발명은 금속재질의 봉재, 관재, 판재 등의 제작시에 진직도를 향상시키고 완제품에 대한 치수 정밀도를 높여 치수 불량률을 줄이며 내부에 발생된 응력을 최소화시켜 완제품에 대한 변형률을 최소화시킬 수 있는 금속재의 정밀 스트레칭 장치 및 그 이용방법에 관한 것이다. 
본 발명은 베이스 상부에 금속모재의 양측을 각각 파지하는 파지수단;을 구비하되 어느 하나는 베이스 상에 고정설치되는 고정파지수단으로 구성되고 다른 하나는 베이스 상부 일측에 설치된 유압실린더의 작동로드에 결합되어 유압실린더의 작동에 따라 상기 베이스 상에서 전,후진이 가능한 이동파지수단으로 구성되며,  
금속모재에 대한 파지를 제어하고 이동파지수단의 이동거리를 제어하는 제어부와; 이동파지수단의 이동거리를 감지하는 스트레칭량 감지센서와; 장치의 각 구성요부를 조작하는 스트레칭조작기;를 포함하는 스트레칭 장치 및, 
스트레칭 장치의 이용방법으로서, 
목표량입력단계, 파지단계, 자동스트레칭시작단계, 감지단계, 비교스트레칭단계, 파지해제단계, 취출단계, 복귀단계를 포함하여 이루어지는 것이 특징이다.
Patent KR-20150137012-A (KR)
Title: Organic light emitting display device
Inventor: LIM DONG HYEOK
IPC: H01L51/50
Filed: 2015-05-26
Abstract: An organic light emitting display device according to an embodiment of the present invention includes a plurality of subpixels comprising a red subpixel, a green subpixel and a blue subpixel. One subpixel of the plurality of subpixels includes an organic light emitting layer comprising a host and a dopant, and a hole transport layer arranged in a lower part of the organic light emitting layer. Difference between a lowest unoccupied molecular orbitals (LUMO) level of the organic light emitting layer and an LUMO level of the hole transport layer is 0.6-0.9 eV. The organic light emitting display device according to the embodiment of the present invention can prevent a reddish phenomenon due to a leakage current of a thin film transistor which can be generated by driving an adjacent pixel, and a reddish phenomenon which can be generated during low gray scale driving of the organic light emitting display device. Also, the present invention can improve lifespan characteristics of the organic light emitting display device by improving hole injection characteristics to the organic light emitting layer through the hole transport layer comprising a second hole transport area including a P-type dopant and a fourth hole transport area.
Patent KR-20160145322-A (KR)
Title: Electronic device
Inventor: KIM KYUNG WAN
IPC: G06F9/30
Filed: 2015-06-10
Abstract: The objective of embodiments of the present invention is to provide an electronic device including a semiconductor memory, capable of improving characteristics of a variable resistance element. To meet the objective, according to an embodiment of the present invention, the electronic device includes a semiconductor memory, and the semiconductor memory includes: a vertical electrode formed on a substrate; a plurality of first memory elements and a plurality of first interlayer insulation layers, alternately stacked along a first side of the vertical electrode; and a plurality of second memory elements and a plurality of second interlayer insulation layers, alternately stacked along a second side of the vertical electrode. Each of the first memory elements corresponds to each of the second interlayer insulation layers in a vertical direction. According to embodiments of the present invention, the electronic device is capable of improving characteristics of a variable resistance element.
Patent KR-20170000234-A (KR)
Title: 콤바인용 배출관 제어를 위한 유압 시스템
Inventor: OH JANG KYU
IPC: A01D41/127
Filed: 2015-06-23
Abstract: 본 발명은 콤바인용 배출관 제어를 위한 유압 시스템에 관한 것으로서, 구체적으로는 지지부로부터 배출관을 회전시키기 위한 실린더; 상기 실린더로 공급하기 위한 오일을 저장하는 탱크; 상기 탱크의 오일을 상기 실린더로 압송하는 펌프; 상기 실린더로 공급되는 오일의 개폐를 제어하는 컨트롤러; 및 상기 배출관을 통해 상기 실린더에 작용하는 하중이 일정 값 이상이면 상기 컨트롤러로부터 실린더로 공급되는 오일을 차단하면서 상기 실린더의 오일이 탱크로 배출되도록 하는 압력조절밸브;를 포함하여 구성됨에 따라, 차체 또는 곡물입자탱크와 연결되는 지지부가 들리거나 벌어짐 또는 파손되는 현상을 방지할 수 있을 뿐만 아니라, 배출관이 휘거나 유압시스템이 파손되는 현상도 방지할 수 있는 콤바인용 배출관 제어를 위한 유압 시스템을 제공하게 된다.
Patent KR-20170003089-A (KR)
Title: Multipurpose hanger
Inventor: WOO CHEOL SEOK
IPC: A45D27/22
Filed: 2015-06-30
Abstract: The present invention relates to a multipurpose foldable hanger capable of enabling a manufacturer to reduce production costs by reducing the volume of a packing container by enabling a bracket, combined with a vacuum absorber on a wall, to be folded, while enabling a user to use a wide space by securing more space by reducing the volume of luggage for travelling as well as folding the bracket when the hanger does not need to be used. The multipurpose foldable hanger comprises: a vacuum absorber (100) fixed to a wall; a combination member (300) combined with the vacuum absorber and a support; and a bracket (500) combined with the combination member, and holding a variety of articles. The vacuum absorber (100) includes a combination groove (110) fixed to the wall, having a side combined with the combination member, into which a combination protrusion (310) of the combination member (300) is inserted, and preventing the articles from departing from the bracket (500) by rotating the combination member (300) when the articles are held by the bracket (500) fixed to the vacuum absorber (100) by the combination member (300).
Patent KR-20170003140-A (KR)
Inventor: KIM MOON OK
IPC: E04C2/32
Filed: 2015-06-30
Abstract: The present invention relates to a floor board to remove inter-floor noise and a manufacturing method thereof and, more specifically, relates to a new floor board capable of simultaneously removing a light impact sound and a heavy impact sound; and a manufacturing method thereof. According to the present invention, the floor board to reduce inter-floor noise comprises: a lower face plate; a middle plate for impact absorption having a wooden edge on a boundary thereof, and an elastic plate on a middle portion thereof; and an upper face plate on which a surface material is laminated. The wooden edge has a coupling unit to be coupled to an adjacent different board. A floor for inter-floor noise in accordance with the present invention is able to remarkably reduce inter-floor noise during a daily life. Specifically, a light impact sound is able to remarkably be absorbed, and the heavy impact sound is able to practically be absorbed. Specifically, an appearance of a product is identical to a laminate floor to allow consumers to select without resistance; and the floor board is an environmentally friendly product including a large quantity of natural palm fiber to provide excellent antibacterial properties.
Patent KR-20170004771-A (KR)
Title: Wheel bearing
Inventor: LEE JIN SU
IPC: F16C33/32
Filed: 2015-07-03
Abstract: Disclosed is a wheel bearing comprising: a wheel hub, an inner wheel, an outer wheel and a ball rolling body. The wheel hub is connected to a vehicular wheel to be integrally rotated. The inner wheel is inserted into and mounted on the outer circumferential surface of the wheel hub to be integrally rotated and includes: an inner wheel-inner circumferential surface positioned inside in a radial direction; an inner wheel-outer circumferential surface positioned outside; and an inner wheel track surface formed on the inner wheel-inner circumferential surface. The outer wheel allows the wheel hub and the inner wheel to be inserted inside in an axial direction to be supported, is spaced from the inner wheel in the radial direction to form a bearing space, and includes: an outer wheel-inner circumferential surface positioned inside in the radial direction; an outer wheel-outer circumferential surface positioned outside; and an outer wheel track surface formed on the outer wheel-inner circumferential surface to correspond to the inner wheel track surface. The ball rolling body is interposed between the outer wheel track surface and the inner wheel track surface to allow the inner wheel and the wheel hub to be relatively rotated with respect to the outer wheel. The height of the inner wheel-outer circumferential surface with respect to the inner wheel-inner circumferential surface is formed to be higher than a central height up to a center of the ball rolling body with respect to the inner wheel-inner circumferential surface, thereby extending the service period of the wheel bearing and effectively preventing an override phenomenon.
Patent KR-20170006422-A (KR)
Inventor: SONG GI DEOK
IPC: A63G31/02
Filed: 2015-07-08
Abstract: The objective of the present invention is to provide a water bucket enabling a user to have fun in the water by using a drop of the water in indoor or outdoor places, and to provide a water bucket operated as the gravity center of the water is moved without using electrical energy. To this end, the water bucket comprises: a supply unit to supply water from the outside; a body unit to receive the water supplied from the supply unit; a cover combined on an inner circumferential surface of the body unit to partition an upper and a lower water containing unit; a supply formed on one or both external sides of the body unit; and a frame unit combined with the support to be able to rotate. The body unit includes a first block, and a second block formed in a position faced with the first block and having a volume different from that of the first block.
Patent KR-20170008992-A (KR)
Inventor: KIM MOO HYUN
IPC: F24F3/14
Filed: 2015-07-15
Abstract: The present invention relates to an air cleaner with efficient air purification and humidification functions. According to the present invention, a casing (10) includes an inlet (12) to supply air to the inside and an outlet (14) to discharge air purified inside to the outside, and has, inside, a fan motor assembly (400) to supply the air to the inside through the inlet. Thereby, the air supplied inside from the inlet (12) is first filtrated by a high efficiency particulate air (HEPA) filter (210). The first filtrated air is supplied inside a cyclone body (310) for second filtration and humidification while forming a spiral flow. A water pump (600) is installed inside the cyclone body and the water is atomized by rotation of the water pump (600), so water particles are scattered inside the cyclone body. While such water particles are sprayed to the spiral flow, foreign materials are removed and the air is humidified at the same time.
Patent KR-20170009188-A (KR)
Title: Mini-skirt for the boat floor finishing
Inventor: CHO YONG CHAN
IPC: B63B29/00
Filed: 2015-07-16
Abstract: The present invention relates to a miniskirt for finishing a floor of a cabin, and a method therefor using the same. The miniskirt for finishing a floor of a cabin comprises: a wall support unit; a baseboard mounting unit; a floor material insertion unit; and a load support unit. Therefore, the present invention does not require an adding process during a finishing work and can reduce a period of work to have economic efficiency as compared to an existing finishing material processing method.
Patent KR-20170016073-A (KR)
Title: Magnetized water generator
Inventor: SHIN HEE JONG
IPC: C02F1/48
Filed: 2015-08-03
Abstract: The present invention relates to a magnetized water production apparatus which is mounted in a conduit and produces magnetized water by magnetizing flowing water, and more specifically, to a magnetized water production apparatus having improved performance, which is mounted in a conduit through which water flows or a conduit passage of an apparatus and obtains magnetized water. The magnetized water production apparatus according to the present invention comprises: a first disk which includes a first disk-type base plate, a first ring-shaped rim formed to protrude from the upper edge of the first disk-type base plate, and a plurality of first water activator modules disposed on the first disk-type base plate; a second disk which is stacked below the first disk, and which includes a second disk-type base plate, and a plurality of second water activator modules disposed on the second disk-type base plate; a third disk which is stacked below the second disk, and which includes a third disk-type base plate, a second ring-shaped rim formed to protrude from an upper edge of the third disk-type base plate, and a plurality of large through holes disposed on the third disk-type base plate; and a fourth disk which is stacked below the third disk, and which includes a fourth disk-type base plate, and a plurality of third water activator modules disposed on the fourth disk-type base plate.
Patent KR-20170017331-A (KR)
Title: New Eco-friendly De-icier Formulation by Physical and Chemical Effect
Inventor: CHOI SE HA
IPC: C04B41/00
Filed: 2015-08-06
Abstract: A novel de-icing agent of the present invention shows approximately 70% de-icing capacity of calcium chloride (CaCl_2) and is prepared by mixing magnesium chloride (MgCl_2), citric acid, sodium carbonate (Na_2CO_3) and sodium acetate (CH_3COONa) with rock salt in a selected ratio, through multiple steps of experiments. Through the experiments, it was confirmed that the novel de-icing agent of the present invention is superior in terms of performance and environmental-friendliness over de-icing agents that are currently available in the market. The composition used to prepare the novel de-icing agent of the present invention is as follows: 20% of rock salt (NaCl); 20% of magnesium chloride (MgCl_2); 20% of sodium carbonate (Na2CO3); 30% of citric acid; and sodium acetate (CH_3COONa). The above composition may be suitably modified to produce multiple types of novel de-icing agents with optimal effects in terms of performance and cost. In the present invention, magnesium chloride (MgCl_2) was used to overcome the problem of calcium chloride (CaCl_2) which is the main ingredient of conventional de-icing agents. Magnesium chloride (MgCl_2) shows a slightly reduced thawing effect but does not cause cracks in the road, and is thus safe. By mixing magnesium chloride and rock salt in a predetermined ratio, and then using hot air to dry the mixture of magnesium chloride and rock salt, metal corrosion may be suppressed, and hardening which results from long-term storage may be prevented.