baber/WOPTO huggingface dataset:
Patent KR-20150032964-A (KR)
Title: 환체제조장치
IPC: A23P1/02
Filed: 2013-09-23
Abstract: 본 발명은 환체제조장치에 관한 것으로서, 반죽재료를 사용하여 환체(丸體)를 제조하기 위한 환체제조장치에 있어서, 지지체와; 상기 지지체에 고정 설치된 전방안내레일과; 상기 전방안내레일의 후방영역에서 상기 전방안내레일에 나란하게 배치되도록 상기 지지체에 설치된 후방안내레일과; 상기 전방안내레일의 일단으로부터 시작하여 상기 전방안내레일을 따라 이동할 수 있도록 설치되고, 배면에 원호단면의 전방성형홈이 직선상으로 형성되어 있는 전방성형판과; 상기 후방안내레일의 양단 중 상기 전방성형판으로부터 멀리 떨어진 종단으로부터 시작하여 상기 후방안내레일을 따라 이동할 수 있고 상기 전방성형판에 나란하게 배치되고 상기 전방성형판에 접근할 수 있도록 설치되고, 전면에는 상기 전방성형홈과 협조하여 원형단면을 이루는 후방성형홈이 형성되어 있는 후방성형판과; 상기 전방성형판이 초기 배치된 상기 전방안내레일의 종단에서 상기 전방안내레일의 다른 종단을 향해 이동하는 방향을 순방향이라고 하고 순방향에 반대되는 방향을 역방향이라고 할 때 상기 전방성형판의 순방향 이동 동작과 상기 후방성형판의 역방향 이동 동작이 동시에 진행되는 순방향성형전직선이동구동과 상기 전방성형판의 순방향 이동동작, 상기 후방성형판의 역방향 이동동작 및 상기 후방성형홈과 상기 전방성형홈이 협조해서 원형단면의 환성형공간을 형성하도록 상기 후방성형판을 상기 전방성형판에 접근시키는 순방향성형전접근동작이 동시에 진행되는 순방향성형전접근구동과 상기 후방성형홈과 상기 전방성형홈이 협조해서 원형단면의 환성형공간을 형성하는 상태가 유지되도록 상기 전방성형판의 순방향 이동동작과 상기 후방성형판의 역방향 이동 동작이 동시에 진행되는 순방향성형구동과 상기 전방성형판과 상기 후방성형판을 초기설치위치로 복귀시키는 초기위치복귀구동을 실시하는 성형구동부와; 상기 순방향성형전접근구동과 상기 순방성형구동과 상기 초기위치복귀구동이 순차적으로 반복되도록 상기 성형구동부를 제어하는 제어부를 포함하는 것을 특징으로 한다. 이에 의해, 단단하고 형태성이 개선된 환체를 제작할 수 있고 환체를 형성할 수 있는 재료의 범위를 증가시킬 수 있으며 단위시간당 환체생산량을 증가시킬 수 있다.
Patent KR-20150035612-A (KR)
IPC: D21H27/20
Filed: 2013-09-26
Abstract: 세라믹 분말 50 내지 90 중량%, 수용성 유기 바인더 10 내지 40 중량% 및 유무기 첨가제 1 내지 15 중량%를 포함하고, 상기 수용성 유기 바인더는 고형분 함량 35 내지 75 중량%의 수용액 형태로 혼합되고, 25℃에서 점도가 20 내지 200cps인 세라믹 벽지 제조용 코팅 졸 조성물이 제공된다.
Patent KR-20150036977-A (KR)
IPC: H02P6/08
Filed: 2013-09-30
Abstract: 본 발명은 모터의 속도가 안정된 정상상태가 된 후 커뮤테이션 시점 조정에 따른 모터의 속도를 검출하여 최적의 커뮤테이션 시점에 모터의 구동을 제어함으로써 모터 구동 효율을 증가시키는 모터 구동 장치 및 모터 구동 방법에 관한 것으로, 모터의 위치를 검출하는 검출부; 상기 검출부에 의해 검출된 모터의 위치에 기초하여 커뮤테이션(commutation) 시점을 연산하고, 연산된 커뮤테이션 시점을 조정하여 최적 커뮤테이션 시점을 선택하는 연산부; 및 상기 연산부에 의한 최적 커뮤테이션 시점에 따라 모터의 속도를 제어하는 구동 제어부를 포함하는 모터 구동 장치 및 코터 구동 방법을 제안한다.
Patent KR-20150043668-A (KR)
IPC: B63B35/34
Filed: 2013-10-15
Abstract: Provided in the present invention is a floating offshore structure using a pontoon, which has the center of gravity in the lower part thereof. The floating offshore structure comprises: a pontoon with an underwater seating groove which is formed to be concave in the lower part thereof and where seawater flows inside; and a load board which is coupled to the lower part of the pontoon and reduces the outflow of the entering seawater while lowering the center of gravity of the offshore structure. Therefore, the floating offshore structure may be relatively less influenced by wind, waves, and the like by positioning the center of gravity in the lower part thereof. Therefore, the floating offshore structure can prevent a pedestrian waling on an upper deck structure from falling into water or can reduce damage to an anchored yacht and the like due to a collision.
Patent KR-20150046956-A (KR)
Inventor: KIM JIN WOOK
IPC: F21V17/02
Filed: 2013-10-23
Abstract: The present invention relates to a lighting device. According to an embodiment of the present invention, the lighting device comprises: a body; a light source part disposed below the body; and a fixed part which includes a base part arranged on the body. The base part of the fixed part comprises at least one clip fixed shaft and at least one jaw. The fixed part is coupled to the clip fixed shaft so as to be rotated, includes the clip over the jaw during the rotation, wherein the motion of the clip is limited by the jaw when the clip is over the jaw. According to an embodiment of the present invention, the lighting device can be easily separated from outer fixtures.
Patent KR-20130133726-A (KR)
Title: Method of transmitting a digital broadcast signal
Inventor: PARK TAE JIN
IPC: H04N21/235
Filed: 2013-10-30
Abstract: An embodiment of the present invention provides a digital broadcast transmitting method comprising the following steps of: multiplexing video data, audio data, and auxiliary data including an event information table (EIT) and a program map table (PMT) into an MPEG-2 transport stream; wherein the EIT and the PMT include a caption descriptor including caption information, and the caption descriptor includes the caption information indicating whether caption data included in the video data is data providing a digital closed caption service according to electronic industry association (EIA)-708 or the caption data is caption data providing an analog closed caption service; and modulating the multiplexed MPEG-2 transport stream into a broadcast signal and transmitting the broadcast signal.
Patent KR-20150050015-A (KR)
Inventor: KIM KWANG WOO
IPC: C08F8/14
Filed: 2013-10-31
Abstract: The present invention relates to an ester modified poly acrylic resin, a manufacturing method thereof and a paint composition including the same and, more specifically, an ester modified poly acrylic resin, which has good mechanical property and is accordingly used as a resin of painting for PCM steel plates, a manufacturing method thereof and a painting composition manufactured by using the same wherein the manufacturing method comprises a step of manufacturing poly acrylic resin by mixing 100 parts by weight of acrylic monomers with 1-5 parts by weight of polymerization initiators and polymerizing the mixture under nitrogen between 120 and 140 degree Celsius; and a step of manufacturing ester modified poly acrylic resin by mixing 100 parts by weight of the poly acrylic resin, 30-50 parts by weight of multi-functional fatty alcohol and 5-20 parts by weight of multi-functional acid under catalyst and making the same at least 200 degree Celsius have a condensation reaction.
Patent KR-20150050026-A (KR)
Inventor: YOON JUNG HYOUN
IPC: C09J11/00
Filed: 2013-10-31
Abstract: The present invention relates to a functional tile adhesive composition, and more specifically, to a functional tile adhesive composition with an excellent antibacterial activity without discharging a volatile organic compound detrimental to health. The functional tile adhesive composition according to the present invention is composed of 20-35 wt% of water, 5-15 wt% of aqueous dispersion, 30-40 wt% of silica, 30-40 wt% of cement, 1-20 wt% of pozzolan, and 1-5 wt% of an additive. The functional tile adhesive composition according to the present invention can maximize antibacterial activity and bacteriostatic properties by adding inorganic materials with excellent antibacterial activity to improve ingredients of a tile adhesive composition, and adjusting a bacteria reduction rate. Additionally, provided is the functional tile adhesive composition with high preference due to having superior antibiotic and offensive odor resistant functions in comparison with conventional tile adhesives by adding natural substances such as yellow soil, hemp, etc. and introducing fresh air. Furthermore, far infrared radiant energy beneficial to health can be generated, and detrimental impact to a human body can be prevented from electromagnetic waves or volatile organic compounds.
Patent KR-20150054565-A (KR)
Inventor: KIM JAE GU
IPC: B23K26/08
Filed: 2013-11-12
Abstract: According to an embodiment of the present invention, a substrate crystallizing apparatus comprises: an optical part to allow the incidence of a laser to a substrate; a support to support the substrate; and a re-incidence member arranged to face the substrate to allow the incidence of the reflected light from the substrate to the substrate again. The purpose of the present invention is to provide a substrate crystallizing apparatus and a substrate crystallizing method to enable the rapid and uniform annealing of substrates.
Patent KR-20150057303-A (KR)
Inventor: YI SEUNG JIN
IPC: E02B8/08
Filed: 2013-11-19
Abstract: The present invention is a simple fish way, which is installed at one side of a beam installed in a stream to allow movement of aquatic creatures, wherein independent simple water tank blocks are detachably installed at the beam and separation walls are formed between the independent simple water tank blocks continuously arranged. Each independent simple water tank block has the open upper part and is manufactured by stacking preserved woods or by forming of plastic or reinforcing concrete. The fish way is formed by the simple water tank blocks according to the present invention allows its location and time of installation to be freely changed depending on the change of an amount of water. Also, the first way is installed at an entrance of an existing fish way, which fish cannot access due to a step formed at the entrance, in such a manner that the existing step formed on a bottom of the stream is removed and a new entrance of the installed fish way closest to the bottom of the stream to allow fish enter into the fish way. As a result, a function of the fish way may be restored, and the fish way may be easily installed and repaired, thereby achieving cost reduction.
Patent KR-20150057570-A (KR)
Inventor: IM JUNG SIK
IPC: C12M1/02
Filed: 2013-11-20
Abstract: The present invention relates to a microorganism culture apparatus having a venturi installed thereon. The microorganism culture apparatus cultures microorganisms therein and comprises: a pump (108) that is arranged in a main body (100) and circulates a culture medium through a circulation pipe (101) on which an inlet and an outlet are formed; a heater (102) which heats the culture medium in the circulation pipe (101); the venturi (105) which is connected with the circulation pump (101) and provides an agent supplied from an agent pipe (104); and a control part including a wire connected to the pump and the heater. The microorganism culture apparatus can be manufactured at low costs and in an easy manner, has light weight, and can be maintained and repaired in an easy manner.
Patent KR-20150057656-A (KR)
Inventor: CHA YONG WOONG
IPC: F04B27/14
Filed: 2013-11-20
Abstract: An air-conditioner compressor (1) of the present invention is normally operated by forming a force of gravity using an electromagnet (30) and permanents (23, 25) identical to a clutch-less air conditioner compressor. However, in case that engine RPM is less than reference RPM (the number of the rotation of an engine determining whether to maintain the off state of an reverse electric clutch or not) when an air conditioner is off or in case that the engine is idle and, when the air conditioner is on, the reverse electric clutch (10) wherein a pulley and a clutch body (21) form a gap is applied by forming a repulsive force between the electromagnet (30) of which a polarity is changed due to a supplied current and the permanent magnets (23, 25) with the electromagnet (30). Through the reverse control, the present invention reduces the energy consumption of the engine by reducing energy consumption in comparison with a forward electric clutch wherein a current is supplied when the clutch-less air conditioner compressor rotating always or the air conditioner is on, thereby obtaining an effect of improving fuel efficiency.
Patent KR-20150057794-A (KR)
Inventor: KIM DAE HYUN
IPC: D06F37/28
Filed: 2013-11-20
Abstract: The present invention relates to a washing machine. The washing machine comprises a door having a hook coupled with one side; a body coupled with the door, and including a coupling groove having the hook coupled with the front; a washing tank formed inside the body; a gasket coupled with an opening of the washing tank; and a prevention frame coupled with one side of the door to be rotated, and protruding in the longitudinal direction of the hook to prevent the hook from being coupled with the coupling groove.
Patent KR-20150059265-A (KR)
Inventor: BAE JUNG KEUN
IPC: B66C13/08
Filed: 2013-11-22
Abstract: A crane is disclosed. According to an embodiment of the present invention, a crane comprises: a trolley installed to be moved along a girder; a lifting beam connected to the trolley to be moved with the trolley; a plurality of wire rope spaced from each other, wherein an end is connected to the lifting beam and the other end is connected to a heavy object; and a heavy object height control unit arranged in the lifting beam, connected to an end of the wire rope, and separately adjusting the wire rope to adjust a height of a heavy object to the lifting beam.
Patent KR-20150060208-A (KR)
Inventor: KIM BYOUNG CHOUL
IPC: A45D44/00
Filed: 2013-11-25
Abstract: The present invention relates to a device for improving skin conditions, which has an ultrasonic resonator or a magnetic resonator on a tip of a handpiece type device for improving skin conditions and accordingly uses resonation, thereby efficiently removing impurities like keratin and sebum, while deeply permeating nutritive components into skin, and significantly improving skin conditions.
Patent KR-20140074827-A (KR)
Title: Array board, 3d display apparatus and method for driving the same
Inventor: ZHANG LIANG
IPC: G02B27/22
Filed: 2013-11-28
Abstract: The present invention relates to a three-dimensional display area and provides an array substrate, a three-dimensional display device, and a driving method thereof. The array substrate includes: a substrate; and 2n-line pixel units which are formed on the substrate in an array format. On the array substrate, scanning lines corresponding to pixel units of each line are further included. Each scanning line is connected to a grid of a thin film transistor of a corresponding pixel unit and receives a grid scanning signal according to a predefined frequency. Scanning lines corresponding to pixel units in a 2k-1 line receive grid scanning signals within a predefined first time slot. Scanning lines corresponding to pixel units in a 2k line receive grid scanning signals within a predefined second time slot. n is a natural number and k is also a natural number greater than 1 and smaller than n. The technical solution of the present invention improves the regeneration factor of a display panel, secures charging time of pixel electrodes, and implements a three-dimensional display.
Patent KR-20150063755-A (KR)
Inventor: KIM JI HOON
IPC: F21W107/10
Filed: 2013-12-02
Abstract: The present invention relates to a lamp unit having a high-efficiency heat-radiating solution adopted with respect to an LED light source, and to a lighting device and a vehicle lamp using the same. The lamp unit comprises: an LED light source; a supporting part for supporting the LED light source; a transmission part for facing the LED light source; and a connection part for connecting the supporting part to the transmission part, wherein the supporting part, the connection part and the transmission part are composed of thermally conductive members to emit the heat of the LED light source in the form of conductive and radiant energy.
Patent KR-20150066109-A (KR)
Inventor: LEE JASON JOON
IPC: G06Q50/10
Filed: 2013-12-06
Abstract: The present invention relates to a method and a system for recommending wedding packages. A wedding package recommending server of a wedding package recommending system including a consumer terminal and wedding planner terminal connected to a communications network according to embodiments of the present invention comprises: a product service DB to store reference images for at least one of a product, products provided from service provider companies, or services, respectively; a product service list generation part to provide product service list information including reference images for services, a service group specified by a consumer member or products corresponding to the service group to the consumer terminal by generating the product service list information; a preferred provider selection part to select providers preferred by the consumer based on the selected product service information by receiving the selected product service information related to the services, the products selected by the consumer, or products displayed on the consumer terminal from the consumer terminal; a wedding planner bidding part to receive bidding request information generated by a part or all of the preferred providers from the consumer terminal, to transmit the bidding request information to the wedding planner terminals, and to receive bid package information from the wedding planner terminals; and a recommendation package generation part to generate recommendation package information from the received bid package information and to transmit the generated recommendation package information to the consumer terminal.
Patent KR-20150067695-A (KR)
Inventor: CHOI HYUN JOO
IPC: H01M8/02
Filed: 2013-12-10
Abstract: The present invention relates to an aluminium separator plate for a fuel cell, wherein an aluminium plate, a binder layer and a reduced graphene oxide layer are sequentially stacked. According to the present invention, provided is an aluminium separator plate for a fuel cell, which can use the advantages of aluminium, such as high processibility, low transmittance of a gas or a liquid, low density and high electric conductivity and has the coating layer of a graphene on the surface to enhance the corrosion resistance of aluminium. Furthermore, provided is an aluminum separator plate with improved binding capacity of aluminium and a reduced graphene oxide layer by using a binder layer.
Patent KR-20150068234-A (KR)
Inventor: PARK JONG KYU
IPC: C21D9/28
Filed: 2013-12-11
Abstract: The present invention relates to a high frequency heat treatment method of a shaft for a clutch mission automatically performing high frequency heat treatment to harden the surface of a shaft installed inside the clutch mission of a vehicle. According to the present invention, the high frequency heat treatment method of a shaft comprises: an input step of arranging the shaft to be heat treat in a line to enable a side surface of the shaft to be parallel to each other; a supply step of picking up the shaft to be moved and vertically rotating the shaft to be inserted into an insertion hole (22) of a rotation turn table (20); a sensing step of sensing whether or not the shaft exists in the insertion hole (22) of the rotation turn table(20); a high frequency heating, cooling, and tempering step of performing heat treatment with an inducer coil having a circular internal diameter with respect to the shaft on the rotation turn table (20) and cooling with a coolant after heat treatment and tempering with the inducer coil; and withdrawing step of withdrawing the shaft undergoing heat treatment, cooling, and tempering from the insertion hole (22) of the rotation turn table.
Patent KR-20150068760-A (KR)
Inventor: KIM NAM WOOK
IPC: G06Q50/16
Filed: 2013-12-12
Abstract: The present invention relates to a server and method for managing real estate offerings, which comprises: an offerings managing unit for storing and managing a plurality of offerings information registered by a plurality of users; a geographic information interworking unit for acquiring and supplying geographic information corresponding to each of the offerings information, interlocking with a geographic information system; and an offerings retrieving unit for selectively supplying only offerings information which the user registered, selectively supplying only offerings registered as interesting offerings by the user, selectively supplying only offerings registered by people registered as interested users by the user, or selectively supplying only offerings information corresponding to a retrieving condition inputted by the user, wherein the offerings information is supplied including the geographic information.
Patent KR-20140081715-A (KR)
Title: METHOD AND SYSTEM FOR PROVIDING VERTICAL SPIN TRANSFER SWITCHED MAGNETIC JUNCTIONS AND MEMORIES USING SUCH JUNCTIONs
Inventor: APALKOV DMYTRO
IPC: G11C11/15
Filed: 2013-12-19
Abstract: A method and system provide a magnetic junction which is usable in a magnetic device and resides on a substrate. The magnetic junction includes a reference layer, a nonmagnetic spacer layer, and a free layer. The nonmagnetic spacer layer is between the reference layer and the free layer. The free layer, the nonmagnetic spacer layer and the reference layer form nonzero angle(s) with the substrate. The magnetic junction is configured such that the free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction.
Patent KR-20150075742-A (KR)
Inventor: WOO IL
IPC: G06F9/44
Filed: 2013-12-26
Abstract: At least a part of embodiments of the present invention relates to a device and a method for providing a numerical control program for a device tool. An optimized numerical control program is automatically produced by a user′s setting for process properties (for example, including at least one of energy consumption, cutting strength, tool wear rate, and process time) and an inputted process shape and process condition, thereby improving usage convenience about the device tool for nonexperts who are not accustomed to numerical control programming. A numerical control program enabling minimization of process time, obtainment of process quality, reduction in energy consumption, and maximization of tool lifecycle can be rapidly provided according to a user′s setting, thereby providing optimal productivity to a user.
Patent KR-20150078178-A (KR)
Inventor: YOON JI WON
IPC: B25J5/00
Filed: 2013-12-30
Abstract: An underwater cleaning robot is disclosed. According to an embodiment of the present invention, the underwater cleaning robot includes: a frame; a driving unit installed in the frame and having a driving wheel and a traveling driving part for driving the driving wheel; a steering unit installed in the frame and having a steering wheel and a steering driving part for driving the steering wheel; a cleaning unit having a cleaning motor installed in the frame and a cleaning brush which rotates with the operation of the cleaning motor to clean a cleaning target surface; and a negative pressure control device having a negative pressure control flow passage to connect the center of the cleaning brush to the outside and a control valve for controlling the opening of the negative pressure control flow passage to control the negative pressure between the cleaning brush and the cleaning target surface.
Patent KR-20130023406-A (KR)
Inventor: YANO TETSUYA
IPC: H04L1/20
Filed: 2007-08-10
Abstract: 무선 기지국은, 이동국으로부터의 데이터를 적정하게 수신할 수 있다. 　무선 기지국(1)의 오류 검출 부호화 처리부(1a)는, 하향 신호의 수신에 필요로 되는 제1 제어 데이터와, 상향 신호의 송신에 필요로 되는 제2 제어 데이터의 쌍방을 포함하는 데이터를 단위로 하여 오류 검출 부호화 처리를 실시한다.  송신부(1b)는, 오류 검출 부호화 처리부(1a)에 의해 오류 검출 부호화 처리된 데이터를 이동국(2)에 송신한다.
Patent KR-20130136970-A (KR)
Inventor: WONG LILLY
IPC: G01N33/53
Filed: 2011-07-29
Abstract: 본 발명은 개체 내 TOR 키나제 활성의 억제를 검출 및/또는 측정하는 방법 및 이와 관련된 용도를 제공한다.
Patent KR-20130090410-A (KR)
Inventor: HOEPPEL LUTZ
IPC: H01L33/40
Filed: 2011-07-25
Abstract: 발광 다이오드 칩으로서, n 전도 영역(1), p 전도 영역(2), 상기 n 전도 영역(1)과 상기 p 전도 영역(2) 사이의 활성 영역(3), 상기 p 전도 영역(2)의, 상기 활성 영역(3)으로부터 멀리 있는 측의 미러(mirror) 층(4), 상기 미러 층(4)의, 상기 p 전도 영역(2)으로부터 멀리 있는 측의 봉지(encapsulation) 층(5), 및 상기 봉지 층(5)의, 상기 미러 층(4)으로부터 멀리 있는 측의 컨택(contact) 층(6)을 포함하고, 상기 봉지 층(5)은 상기 p 전도 영역(2)으로부터 멀리 있는 미러 층(4)의 바닥 영역(43) 및 상기 바닥 영역(43)에 대하여 횡단선으로(transversely) 진행하는 상기 미러 층(4)의 측면 영역(42)을 따라 연장하고, 상기 컨택 층(6)은 상기 n 전도 영역(1)과 마주하는 측으로부터 곳곳에서 자유롭게 액세스 가능한 것인 발광 다이오드 칩이 명시된다.
Patent KR-20130114086-A (KR)
Inventor: BRAUN SIMON
IPC: H01L21/302
Filed: 2011-08-25
Abstract: 본 발명은 플루오르화 수소산; 질산; 및 표면 활성인 1 종 이상의 음이온성 폴리에테르를 포함하는 단일결정 및 다결정 규소 기판의 표면을 텍스처화하는데 적합한 산성 수용액 및 산성 에칭 수용액; (1) 기판의 하나 이상의 주요 표면을 산성 에칭 수용액과 접촉시키는 단계; (2) 오목부 및 볼록부로 이루어지는 표면 텍스처화를 수득하기에 충분한 시간 동안 및 온도에서 기판의 하나 이상의 주요 표면을 에칭하는 단계; 및 (3) 기판의 하나 이상의 주요 표면과 산성 에칭 수용액과의 접촉을 끊는 단계를 포함하는 단일결정 및 다결정 규소 기판의 표면을 텍스처화하는 방법; 및 용액 및 텍스처화 방법을 사용하여 광전지 및 태양 전지를 제조하는 방법에 관한 것이다.
Patent KR-20130035276-A (KR)
Inventor: KARIYA NOBUSUKE
IPC: C21D8/02
Filed: 2008-11-20
Abstract: 연질이고, 우수한 가공성을 가짐과 함께, 우수한 담금질성을 갖는 강판 및 그 제조 방법을 제공한다.     질량% 로, C : 0.3～0.7 %, Si : 0.1 % 이하, Mn : 0.20 % 이하, P : 0.01 % 이하, S : 0.01 % 이하, Al : 0.05 % 이하, N : 0.0050 % 이하를 함유하고, 잔부 Fe 및 불가피적 불순물로 이루어지는 조성을 갖고, 페라이트와 그래파이트와 시멘타이트를 함유하는 조직을 갖고, 또한 조직 전체에서 차지하는 페라이트와 그래파이트와 시멘타이트의 체적률의 합계가 95 % 이상, 그래파이트와 시멘타이트 전체에서 차지하는 그래파이트의 체적률 (그래파이트율) 이 5 % 이상이고, 또한, 그래파이트와 시멘타이트의 평균 입경이 5 ㎛ 이하인 것을 특징으로 하는 강판, 또는, 그래파이트와 시멘타이트 전체에서 차지하는 페라이트 입자 내에 존재하는 그래파이트와 시멘타이트의 체적률의 합계가 15 % 이하인 것을 특징으로 하는 강판.