baber/WOPTO huggingface dataset:
Patent KR-20090028984-A (KR)
Title: Engine mounting unit for vehicles
Inventor: KIM DAE YONG
IPC: B60K5/12
Filed: 2007-09-17
Abstract: A vehicle engine mounting unit is provided to mount an engine more securely via an engine mount of three-point support type. A vehicle engine mounting unit comprises a front subframe(11) mounted on the front bottom of a vehicle body, an engine mount(13) which is mounted on the front subframe and supports the engine, and a reinforcing member(15) connecting side members(3) and a rear cross member(9) of the front subframe. The engine mount is connected, in three-point support type, to mounting holes formed on the side member, the rear cross member, and the reinforcing member.
Patent KR-20090029409-A (KR)
Title: Complex of ionic liquid-carbon nanotubes support containing immobilized metallic nanoparticles and preparation method thereof
Inventor: LEE SANG GI
IPC: B82B3/00
Filed: 2007-09-18
Abstract: An ionic liquid-carbon nanotube supporter composite in which metal nanoparticle is fixed is provided to increase dynamic stability of metal nanoparticle using the carbon nanotube as a supporter and to be separated without a surfactant. An ionic liquid-carbon nanotube supporter composite in which metal nanoparticle is fixed is indicated as a chemical formula 1. In the chemical formula, the carbon nanotube is a single-walled carbon nanotube or a multi-walled carbon nanotube; X is selected from a group consisting of Cl, Br, I, OH, AlCl4, BF4,ClO4, PF6 and N(OTf)2; Y is O or NR5; R5 is selected from a group consisting of hydrogen, substituted or non-substituted straight-chain of C1 ~ C5 or side chain alkyl and substituted or non-substituted aryl of C1 ~ C5; R1 to R4 are independently selectively H, non-substituted or substituted C1 ~ C10 selected from a group consisting of OH, COOH and SO3H or side chain alkyl group or non-substituted or substituted C5-C7 aryl selected from a group consisting of OH, Br, Cl, COOH, COO-,SO3H, SO3-, first, second, third amine and C1 ~ C10 straight-chain or the side chain alkyl group; M is one selected from a group consisting of Pd, Rh, Ir, Pt and Au; n is 0 ~ 10.
Patent KR-20090032760-A (KR)
Title: Funtional salad sauce using herbs and manufacturing method thereof
Inventor: CHOI BYUNG KON
IPC: A23L23/00
Filed: 2007-09-28
Abstract: Provided is a functional salad sauce using medicinal herbs and Ulmi radicis cortex, which has antiphlogistic effects, antioxidant effects and anticancer effects. A functional salad sauce using medicinal herbs and Ulmi radicis cortex comprises the following steps of: concentrating the medicinal herbs after a heat-extracting process for the medicinal herbs; concentrating the Ulmi radicis cortex after the heat-extracting process for the Ulmi radicis cortex; and mixing the medicinal herbs concentrate and the Ulmi radicis cortex concentrate to seasoning sauce to obtain the functional salad sauce. The medicinal herbs concentrate is obtained by hot-water extracting: the each 2-4g of Glycyrrhiza Radix, Lycii Fructus, Crataegus pinnatifida, Schizandrae Fructus, Fructus Aurantii Immature and Gastrodiae Rhizoma; the each 3-5g of Zizyphi Fructus, Zingiberis Rhizoma, Cinnamomi Cortex and Astragali Radix; and the 4-6g of Radix Puerariae, Angelica Radix, Codonopsis Pilosulae Radix, Paeoniae Radix, Pachymae fungus, Adenophorae Radix, Atractylodes japonica, Prepared Rehmannia Root, Ginseng Radix and Cnidium root.
Patent KR-20090034110-A (KR)
Title: Lighting device and display device including the same
Inventor: SIN KWANG SA
IPC: G02F1/13357
Filed: 2007-10-02
Abstract: A light emitting device and a display device with the same are provided to emphasize a design element when a user waits for operation of a light emitting device, thereby improving visual effects. A circuit board(100) mounts predetermined parts. A light emitting unit is placed on the circuit board. Light is sequentially spread from a center part to an edge part. Light disappears from the edge part to the center part in the light emitting unit. The light emitting unit comprises a light emitting member(200) and a filter member(300). The filter member spreads light from the center part to the edge part when lightening the light emitting member. A filter member makes light gradually disappear from the edge part to the center part when turning off the light emitting member.
Patent KR-20090037664-A (KR)
Title: Phase change random access memory device and method for fabricating thereof
Inventor: PARK JAE HYUN
IPC: H01L27/115
Filed: 2007-10-12
Abstract: A phase change random access memory device and a method for fabricating thereof are provided to increase current driving capacity of a switching device, so increasing integration. A pin body(108) having an upper side and side walls are protruded from a semiconductor substrate(102). A first and a second impurity region(116a,116b) are formed in the pin body while being separated each other. A gate electrode(112) covers the pin body formed at the first and a second impurity region. A data storage element is electrically connected with one of the first and second impurity region and it includes a phase change material film(130), a first electrode, and a second electrode.
Patent KR-20090038222-A (KR)
Title: Hair growth promoting composition and the manufacturing method thereof
Inventor: SHIN HYUN DAE
IPC: A61K8/98
Filed: 2007-10-15
Abstract: A hair growth promoting composition is provided to promote hair growth and to make metabolism smooth by supplying high nutrients and mineral to hair. A hair growth promoting composition comprises black bean powder 10-20%, shoot powder 2-10%, marker powder 2-10%, black sesame powder 10-25%, green perilla powder word 1-5%, tangle powder 5-25%, undaria powder 2-10%, album var. coloratum 0.5-2%, polygoni multiflori Radix powder 2-15%, anchovy powder 1-3%, Hizikia fusiformis powder 1-5%, walnut powder 2-10%, elumbinis Semen powder 2-10%, yeast powder 1-5% and excipient 5-10%.
Patent KR-20090040662-A (KR)
Title: Wheel cerver for waterproof
Inventor: OH JUN SEOK
IPC: B60B7/02
Filed: 2007-10-22
Abstract: A water proof wheel cover is provided to prevent the discoloration and deformation of a wheel by surrounding the outer side surface of the wheel for vehicles. A water proof wheel cover(1) comprises: a waterproof bag(10) of a water proof material covering the outer side surface of the wheel; a flexible wire(30) fixing the waterproof bag; and a fixed ring(40) maintaining the fixed state of the flexible wire. The flexible wire is inserted inside the edge of the waterproof bag. The fixed ring is fixed to the flexible wire while being exposed from the fixed end of the waterproof bag. The watertight bag comprises the cloth for protecting the inner side contacting with the wheel.
Patent KR-20090052475-A (KR)
Inventor: KIM JUN WOO
IPC: F24F13/20
Filed: 2007-11-21
Abstract: 본 발명은 공기조화기의 실내기에 관한 것으로, 보다 상세하게는 사이드아웃렛을 통해 토출부 내로 손을 집어 넣을 수 없도록 함으로써 안전 사고를 미연에 방지할 수 있을 뿐만 아니라 사이드아웃렛의 강도를 보강하고, 토출부에서 토출되는 바람을 균일하게 분산시키는 공기조화기의 실내기에 관한 것이다. 
       
     공기조화기, 에어컨, 실내기, 실외기
Patent KR-20090031965-A (KR)
Title: Sole plate
Inventor: BAN KAZUO
IPC: E01C9/08
Filed: 2007-11-27
Abstract: A liner is provided to separate the damaged liner from the adjacent liner easily when replacing one liner among liners which are connected to each other. A liner(A) comprises a concave part(2) and convex part(3) formed in the angular side of square shape board main body(1), a pin insertion passage(4) of main body part which is formed along the line which the concave part is formed in the liner main body, a convex part pin insertion passage(5) penetrated in the convex part, and a pin main body part of lock pin which slides, and which is inserted into the pin insertion passage of main body part. A part of pin insertion passage of main body part is formed in the liner body surface which is an open groove. A first transverse groove(9) and second transverse groove(10) are installed at the open groove.
Patent KR-20090055874-A (KR)
Title: Non-volatile memory device and method of fabricating the same
Inventor: JIN YOUNG GU
IPC: H01L27/115
Filed: 2007-11-29
Abstract: A non-volatile memory device and a method of fabricating the same are provided to realize high integration and capacity of a non-volatile memory device by increasing the number of a lamination layer of a first electrode line. At least one second electrode(140a) is formed between at least one pair of a first electrode(115a,115b). A data storage layer(130) is interposed between a pair of first electrode lines and one or at least one second electrode line. A data storage layer locally stores resistance alteration, and at least a pair of first electrode lines comprises a first conductive-type semiconductor while at least a pair of second electrode lines comprises a second conductive-type semiconductor.
Patent KR-20090056080-A (KR)
Title: The outsole using carbon fiber or glass fiber prepreg composite and its manufacturing method
Inventor: CHOI KYUNG MAN
IPC: A43B13/02
Filed: 2007-11-29
Abstract: An outsole and a manufacturing method thereof are provided, which reduce shaking to the right and left in walking and improve feeling of wearing. An outsole manufacturing method comprises: a step(S10) injecting a compound in which additive, and the reinforcing agent and cross-linking agent are mixed in the material of the rubber component in the mold die shut tightly; a step(S20) for manufacturing the outsole by pressing at 150-160deg.C for 5-10 minutes using press machine; a step(S30) for laminating the prepreg moldings after applying adhesive on the outsole; and a step(S40) for binding with the outsole by pressing the prepreg moldings.
Patent KR-20090056457-A (KR)
Title: Electromagnetic generator based on mems and the manufacturing method thereof
Inventor: KIM TAE SEON
IPC: H02K57/00
Filed: 2007-11-30
Abstract: An electromagnetic induction generator based on MEMS(Micro Electro Mechanical System) and a manufacturing method thereof are provided to generate the energy by changing the polarity of a magnetic material through the external kinetic energy. An electromagnetic induction generator based on MEMS includes a first magnetic material(10), a coil unit(20), an insulating unit, a second magnetic material(30), and a tube(40). The first magnetic material serves as a magnetic flux path. The coil unit surrounds the first magnetic material. The coil unit has a micro line width. The insulating unit insulates the first magnetic material and the coil unit. The second magnetic material is arranged outside the coil unit. The second magnetic material induces the polarity variation of the first magnetic material. The tube is formed in one side of the coil unit. The second magnetic material moves through the tube. The tube is formed vertically to the longitudinal direction of the first magnetic material.
Patent KR-20090060719-A (KR)
Title: Method for packet field modification in network device
Inventor: PARK WAN KI
IPC: H04L29/06
Filed: 2007-12-10
Abstract: A method for converting a packet in a network device is provided to correct a checksum value of a received packet, thereby minimizing packet buffer capacity for packet buffering and packet delay time for calculation. The first comparison value is generated from checksum of a received packet(S702). A packet header is converted to generate a converted packet so that the received packet is transmitted to the next node. The second comparison value is generated from the received packet and header contents of the converted packet. A transmission packet is generated by correcting the converted packet based on comparison result of the first and second comparison results.
Patent KR-20090061299-A (KR)
Title: Mask handler
Inventor: KIM HYUN JIN
IPC: H01L21/027
Filed: 2007-12-11
Abstract: A mask handling apparatus is provided to facilitate mask handling and to reduce weight of a mask handling apparatus by including a pillar shape of a hollow type in order to arrange a wire inside a supporting pillar of a main body. A main body(100) includes a main body supporting pillar(110), a main body connection part(120), and a main body end part(130). The main body supporting pillar has a pillar shape of a hollow type in order to arrange a wire. A plurality of arms(200a,200b) is branched from the main body, and is separated each other. A plurality of clamps(300a,300b) includes an inner side and a switch. Each clamp is arranged in the arms. The switch is protruded from the inner side. A loading display part(530,540) is connected to a plurality of switches. A mask is clamped in a plurality of clamps. The loading display part generates a loading signal in case the mask is contacted with a plurality of switches.
Patent KR-20090068415-A (KR)
Title: A ground pressure plate intergrated with packer and soil-nailing method using the same
Inventor: KIM JIN MAN
IPC: E02D5/74
Filed: 2007-12-24
Abstract: A packer integrated bearing plate and a soil nailing method using the same are provided to improve constructability and economical efficiency by installing a bearing plate and a packer at a single work with an integrated structure of a bearing plate portion and a friction grounding portion, thereby reducing work load. A packer integrated bearing plate, as an accessory used for a soil nailing method which performs grouting after inserting a nail(200) into a perforated hole of the ground, comprises a bearing plate portion(110) and a friction grounding portion(120), wherein the bearing plate portion is formed to be larger than the perforated hole to compress the ground at the front of the perforated hole and provided with a first through hole installed to penetrate a nail and a second through hole installed to penetrate a grouting hose(300), and the friction grounding portion is formed in the cylindrical shape by extending from one side of the bearing plate portion and installed to abut on the inner circumference of the perforated hole in case of being inserted to the perforated hole.
Patent KR-20090070373-A (KR)
Title: The permanent bar anchors using steel bars with a high yeild strength for prestressing tendon and it's procedure of installation
Inventor: KANG GI DON
IPC: E02D17/20
Filed: 2007-12-27
Abstract: A permanent anchor member using a high intensity different bars and a construction method thereof are provided to make resistivity in the corrosion environment excellent and facilitate inspection and maintenance. A permanent anchor member using a high intensity different bars comprises a high intensity deformed steel reinforcement(2) employed as a tensile member, a sheath pipe(8) of a head which performs the function of the free field, an inner spacer(4) which maintain the location of the steel reinforcement inside the sheath pipe, a bellows pipe(6) which performs the setter knuckle of the high intensity deformed steel reinforcement, a mortar layer(10) for integrating the deformed steel reinforcement and sheath pipe, an outer spacer which maintains the center inside the perforation hole of the ground, a head member which is inserted in the high intensity deformed steel reinforcement of the head which is exposed in order to add the tensile force, and grout(30) which is poured in the perforation hole of the ground.
Patent KR-20070035574-A (KR)
IPC: H04N13/04
Filed: 2005-08-11
Abstract: 제어부(103)에서는, 표시화상의 위치 정보에 기초하여, 복호부(102)에서 복호된 3차원 화상 데이터를 입체적으로 표시하는지(3차원 표시 모드), 평면적으로 표시하는지(2차원 표시 모드)를 선택하고, 표시부(104)에 표시 모드로서 통지한다. 구체적으로는, 입력된 위치 정보 = 표시 어드레스를 감시하고, 시간적으로 변화가 없는 경우, 즉, 화상 데이터의 표시 위치가 변하지 않은 경우, 표시 모드로서 3차원 표시 모드를 선택한다. 한편, 시간적으로 변화가 있는 경우, 즉, 스크롤에 의해 화상 데이터의 표시 위치가 변화하고 있는 경우, 표시 모드로서 2차원 표시 모드를 선택한다. 이에 따라, 3차원 화상 데이터의 스크롤 표시 시에, 효율적으로 디스플레이상에 화상 데이터를 표시하는 화상 데이터 표시 장치를 제공한다.
Patent KR-20070088456-A (KR)
Title: Three-sided frame for elevator
Inventor: WATANABE TAKAO
IPC: B66B13/30
Filed: 2006-02-20
Abstract: A three-sided frame for an elevator has a back plate fixed to an edge of a landing doorway and a front plate removably attached to the back plate. A tube is formed by attaching the front plate to the back plate. The front plate has a front plate body surrounding a space between the back plate and the front plate, leaving an opening facing a hoistway, and has a dam plate removably attached to the back plate and front plate so as to close the opening.
Patent KR-20070039081-A (KR)
Inventor: HIGASHIMURA HIDEYUKI
IPC: C07F9/00
Filed: 2005-06-24
Abstract: 본 발명은 방향환에 직접 결합된 수소 원자를 2개 이상 갖는 1종 이상의 방향족 화합물을 산화제의 존재하에 산화 중합시키는 방향족 화합물 중합체의 제조 방법에서, 촉매로서, 전이 금속 착체를 포함하거나 또는 전이 금속 착체와 활성화제로부터 제조되는 촉매이며, 상기 촉매의 하기 수학식 A로 정의되는 파라미터 P가 0.50 이상이고, 하기 수학식 B로 정의되는 파라미터 Eo가 0.50[V] 이상인 촉매를 사용하는 것을 특징으로 하는 방향족 화합물 중합체의 제조 방법에 관한 것이다. 
     <수학식 A> 
     P=Af/Ai 
     식 중, Ai는 상기 촉매를 포함하는 용액에 대하여 200 ㎚ 이상 800 ㎚ 이하의 자외로부터 근적외의 파장 영역에서 얻어진 흡수 스펙트럼에 있어서, 가장 긴 파장측 흡수대의 흡수 극대에서의 흡광도를 나타내고, Af는 상기 용액에 상기 촉매에 포함되는 금속의 몰수에 대하여 3 당량의 물을 첨가한 용액에 대하여 상기 파장 영역에서 얻어진 흡수 스펙트럼에 있어서, Ai와 동일한 파장에서의 흡광도를 나타낸다.   
     <수학식 B> 
     Eo=(Epa+Epc)/2 [V] 
     식 중, Epa는 상기 촉매를 포함하는 용액을 순환 전압전류법에 의해 측정했을 때의 페로센/페로세늄 이온의 산화 환원 전위 기준으로 0.50[V] 이상의 전위에 서의, 상기 촉매에 포함되는 전이 금속에서 유래하는 산화 환원 전위의 산화측 피크 전위를 나타내며, Epc는 동일하게 측정했을 때의 Epa에 대응하는 환원측 피크 전위을 나타낸다.   
     방향족 화합물 중합체, 전이 금속 착체, 활성화제, 바나듐 착체
Patent KR-20070031415-A (KR)
IPC: G01C17/38
Filed: 2005-07-29
Abstract: 지자기 센서로부터의 데이터를 입력받아 자계 데이터를 측정하는 스텝과, 측정 데이터를 저장해야 할지의 여부를 직전에 저장된 측정 데이터와의 거리에 기초하여 판단하는 스텝과, 저장된 데이터에 기초하여 오프셋값을 산출하는 스텝과, 그 오프셋값의 산출에 이용된 복수의 측정 데이터를 성분마다 비교하여, 성분마다의 최대값과 최소값의 차가 소정값 이상일 때에, 그 산출한 오프셋값이 유효하다고 판단하는 스텝과, 이미 저장되어 있는 오프셋값을 상기 스텝에서 유효하다고 판단된 오프셋값으로 갱신하는 스텝과, 상기 측정 데이터를 그 갱신한 오프셋값으로 보정하여, 방위 데이터를 연산하는 스텝을 구비한다.   
       
     방위 센서 유닛, 측정 데이터 저장 판별, 측정 데이터 저장, 오프셋 계산, 오프셋 유효성 판별, 오프셋 저장, 오프셋 설정, 방위 계측, 방위 센서 칩, 자기 센서, 절환, 증폭기, 가산기, 오프셋 기억
Patent KR-20070052757-A (KR)
Inventor: SCHUMACHER JEFFREY A
IPC: B65G17/08
Filed: 2004-07-29
Abstract: 힌지 컨베이어 체인은 둘 이상의 링크를 포함하며, 각각의 링크는 둘 이상의 링크를 서로 힌지식으로 연결하는 핀과 결합되는 핀 결합면을 포함한다.  둘 이상의 링크를 힌지식으로 연결하는 핀은 둘 이상의 링크의 표면들 중 하나 이상의 핀 결합면과 활주 가능하게 결합되는 외향 표면을 포함한다.  둘 이상의 링크의 하나 이상의 핀 결합면 및 외향 표면 중 하나는 약 2.5 중량% 이상의 구리를 갖는 스틸 합금으로 형성되고, 둘 이상의 링크의 하나 이상의 핀 결합면 중 하나 이상 및 외향 표면 중 다른 하나는 스테인리스 스틸로 형성된다.
Patent KR-20070028619-A (KR)
Title: A method of evaluating characteristics of and forming of an insulating film for a semiconductor device
Inventor: MIYATA MASAYASU
IPC: H01L21/30
Filed: 2005-06-01
Abstract: A method of evaluating characteristics of an insulating film 1 is disclosed. The insulating film 1 is formed of an insulative inorganic material as a main material, the insulative inorganic material containing silicon and oxygen. The insulating film 1 further contains hydrogen atoms. The method includes the steps of : analyzing the insulating film 1 to which an electric field has never been applied by Thermal Desorption Spectroscopy; comparing intensity of an H2 fragment with intensity of an OH fragment, the intensity of the H2 fragment and the intensity of the OH fragment being measured at a state where the insulating film 1 is heated at a temperature in the range of 500 to 1000 C; and evaluating the characteristics of the insulating film 1 on the basis of the comparison result. ® KIPO & WIPO 2007
Patent KR-20070046160-A (KR)
Title: Stepped automatic transmission
Inventor: BAUKNECHT GERT
IPC: F16H3/66
Filed: 2005-08-08
Abstract: A multi-stage automatic transmission comprises a drive input shaft (AN), a drive output shaft (AB), a double planetary transfer gearset (VS), a main gearset (HS) made as a coupled planetary gearset with at least three non-coupled input elements and one output element, and six shift elements (A to F), which, when engaged in pairs, enable at least eight forward gears to be engaged. An input element of the transfer gearset (VS) is connected with the drive input shaft (AN). An output element of the transfer gearset (VS) rotates at a speed lower than the input speed of the drive input shaft (AN). An element of the transfer gearset (VS) is fixed on a transmission housing (GG). The first input element of the main gearset (HS) can be connected via a second shift element (B) to the output element of the transfer gearset (VS), can be fixed by a third shift element (C), and can be connected with the drive input shaft (AN) by a sixth shift element (F). The second input element of the main gearset (HS) can be connected via a first shift element (A) to the output element of the transfer gearset (VS). The third input element of the main gearset (HS) can be fixed by a fourth shift element (D) and can be connected by a fifth shift element (E) to the drive input shaft (AN). The output element of the main gearset (HS) is connected to the drive output shaft (AB). The third and sixth shift elements (C, F) are arranged on the side of the main gearset (HS) opposite to the transfer gearset (VS). Alternatively, the third shift element (C) can also be arranged radially over the main gearset (HS).
Patent KR-20070034643-A (KR)
IPC: H01L21/336
Filed: 2004-05-14
Abstract: 본 발명의 일 실시예에 의하면, 다음과 같이 반도체 디바이스가 형성된다.  실리콘이 제거될 수 있는 실리콘층의 노출된 표면 구역이 정의된다.  상기 실리콘층의 노출된 표면 구역으로부터 상기 실리콘층의 내부로 연장된 트랜치의 중간 섹션을 형성하기 위하여 상기 실리콘층의 일부가 제거된다.  실리콘이 제거될 수 있는 실리콘층의 추가적인 노출된 표면 구역이 정의된다.  상기 트랜치의 외주 섹션을 형성하기 위하여 상기 실리콘층의 추가적인 부분이 제거되어, 상기 트랜치의 외주 섹션이 상기 실리콘층의 추가적인 노출된 표면 구역으로부터 상기 실리콘층의 내부로 연장된다.  상기 트랜치의 중간 섹션은 상기 트랜치의 외주 섹션보다 상기 실리콘층의 내부로 더 깊이 연장된다. 
       
     반도체, 트렌치, MOSFET
Patent KR-20070057868-A (KR)
Title: Bipolar power supply with lossless snubber
Inventor: HESTERMAN BRYCE L
IPC: H02M7/68
Filed: 2005-08-29
Abstract: There is provided by this invention an isolated power converter suitable for high power and high voltage applications that has stacked rectifiers that are snubbed with lossless snubber circuits which do not restrict the voltage conversion range.
Patent KR-20070094727-A (KR)
Title: Surface plasmon resonance and quartz crystal microbalance sensor
Inventor: WANG GUANGYU
IPC: G01N21/552
Filed: 2004-09-15
Abstract: A sensor chip assembly for use in a sensor capable of Surface Plasmon Resonance (SPR) and gravimetric sensing. The assembly comprising a transparent piezoelectric substrate (1) having a first surface and a second surface opposite to the first surface. The assembly also comprising first and second thin film metal electrodes (2,3) respectively provided on the first and second surfaces of the substrate (1). The second thin film metal electrode (3) being position on the second surface of the substrate (1) such that a light beam is capable of being transmitted through the second surface of the substrate and reflected from the first thin film metal electrode. The assembly also comprising an attenuated total reflection (ATR) coupler (11) disposed adjacent to the second thin film metal electrode (3).
Patent KR-20070063576-A (KR)
Title: Edge replacement type cutting tip and method of manufacturing the same
Inventor: OMORI NAOYA
IPC: B23B51/00
Filed: 2005-10-20
Abstract: An edge replacement type cutting tip (1) and a method of manufacturing the cutting tip. The cutting tip (1) comprises a body (8), a base layer formed on the body (8), and a use state indicating layer formed on the base layer. The body (8) is characterized in that at least one face thereof is formed in a face (2) and the other at least one face is formed in a flank (3), ridges where the face (2) crosses the flank (3) are formed in edge ridge lines (4), the base layer presents a color different from that of the use state indicating layer, and the use state indicating layer is formed on the base layer in the entire surfaces or parts of the surfaces of areas (A2) on the flank (3) excluding areas (A1) vertically extended by a distance of 0.2 to less than 3.0 mm from the edge ridge lines (4).