baber/WOPTO huggingface dataset:
Patent KR-20180046598-A (KR)
Inventor: PARK JEONG ONE
IPC: G06F11/30
Filed: 2016-10-28
Abstract: A method for detecting and managing a fault according to an embodiment of the present invention includes the steps of: receiving analysis target data generated by each of a plurality of devices that are fault detecting targets; determining a first device and a second device different from the first device for extracting correlation coefficients among the plurality of devices; extracting a first correlation coefficient between a variable included in the analysis target data of the first device and a variable included in the analysis target data of the second device; and detecting the faults of the plurality of devices based on the first correlation coefficient. Accordingly, the present invention can reduce a wrong detection rate.
Patent KR-20170051350-A (KR)
Title: Substantially symmetrical 3-arm star block copolymers
Inventor: FARNHAM WILLIAM BROWN
IPC: C08F220/18
Filed: 2016-10-31
Abstract: The present invention relates to a substantially symmetric three-arm block copolymer. In a first aspect, a composition of matters comprises a substantially symmetric three-arm block copolymer having: a central core; and a double block copolymer arm having an inner block and an outer block. In a second aspect, a product comprises: a substrate; a block copolymer composition on the substrate; and a neutral layer between the substrate and the block copolymer composition.
Patent KR-20180049631-A (KR)
Inventor: LEE SEO WOO
IPC: A23L7/10
Filed: 2016-11-03
Abstract: Disclosed is a method for producing chrysanthemum rice cake. The method for producing chrysanthemum rice cake comprises: a first step of mixing the ingredients of a skin including 66 parts by weight of nonglutinous rice powder, 16.5 parts by weight of glutinous rice, 16.5 parts by weight of purified water, and 1 part by weight of salt; a second step of filtering the ingredients of a skin with a sieve of a 200 mesh size; a third step of inserting the filtered ingredients of the skin in a rice steamer, evenly spreading the ingredients at a thickness of 5 to 7 cm, positioning the rice steamer inside a steamer, steaming the ingredients at 100-130°C for 15-20 minutes, and then cooling the ingredients at room temperature for 5-7 minutes; a fourth step of adding 2 parts by weight of dried chrysanthemum powder, 2 parts by weight of steamed chrysanthemum petals, and 1 part by weight of pumpkin powder per 100 parts by weight of the ingredient of the skin and then kneading the mixture to produce the skin; a fifth step of mixing chrysanthemum petals and sugar and aging the mixture in a pot to produce a chrysanthemum-fermented solution; a sixth step of mixing adzuki bean filling with sugar, heating the mixture to 80°C to produce a filling mixture, mixing the filling mixture with the chrysanthemum-fermented solution, and heating the mixture to 80°C to produce filling; and a seventh step of spreading the skin at a thickness of 5 to 7 mm, inserting the filling in the center of an upper portion of the skin, folding the skin in half, and inserting the skin in a chrysanthemum-shaped frame to produce chrysanthemum-shaped rice cake. By adding chrysanthemum-fermented solution, a preservation period of chrysanthemum rice cake produced by the present invention is able to be extended.
Patent KR-20180049892-A (KR)
Inventor: LEE YOUNG MI
IPC: G06Q50/30
Filed: 2016-11-04
Abstract: The present invention relates to an electric vehicle platform system based on a connected car reflecting a real-time driver environment. To be more particular, the electric vehicle platform system based on a connected car reflecting a real-time driver environment can promote safe driving of an electric vehicle by analyzing information transmitted from a driving electric vehicle and providing other electric vehicles in a management zone with safe driving information in real time, can effectively prevent a discharging and stopping accident of the electric vehicle by analyzing usage information of the electric vehicle in real time and transmitting generated electric vehicle charging information to the electric vehicle, and can ensure rapid responses to dangerous situations by expressing the real-time safe driving information inside the management zone on a map for intuitive recognition, and immediately reporting danger information to a related organization. In addition, the electric vehicle platform system comprises: a terminal device which is installed in an electric vehicle; and a management server which analyzes information transmitted from the terminal device and an external device, generates information related to the driving of the electric vehicle, and transmits the information to the terminal device.
Patent KR-20180052240-A (KR)
Title: a double cup
Inventor: GO EUN
IPC: B65D85/72
Filed: 2016-11-10
Abstract: The present invention relates to a double cup. According to the present invention, the double cup comprises: a lower cup; and an upper cup inserted into a storage space of the lower cup. An upper end of the lower cup has a screw part, and an upper end of the upper cup has a nut part fastened to the screw part. Moreover, a straw storage part is formed in the upper cup in the vertical direction.
Patent KR-20180052250-A (KR)
Inventor: KIM HAE KI
IPC: E04G15/06
Filed: 2016-11-10
Abstract: The present invention relates to a building sleeve having a height adjustment structure. More specifically, a building sleeve having a height adjustment structure is capable of precisely adjusting the height with respect to the construction thickness required for the concrete building, promoting the convenience in the construction during the fixation on a mold, and securing the safety of a worker by preventing an adjustment pipe from being dented inside a fixing pipe through the stable support between the fixing pipe and the adjustment pipe even though the worker stepped on the adjustment pipe.
Patent KR-20180052845-A (KR)
Inventor: LEE KI WON
IPC: H04H60/04
Filed: 2016-11-11
Abstract: The present invention relates to an audio mixer. More specifically, the present invention relates to an analogue audio mixer having a digital controller which solves problems of an analogue mixer and a digital mixer. The digital controller applies digital control to analogue sound quality by converting only a control part into digital without changing an analogue circuit related to audio quality, in the analogue mixer used for merging and effects of audio, thereby realizing functions such as simplification of the circuit, miniaturization of the mixer, ease of channel expansion, and storage and calling of a setting value. The analogue audio mixer comprises an audio input part, an audio output part, and a control part.
Patent KR-20180056065-A (KR)
Inventor: KWON OH KEUN
IPC: A61K8/97
Filed: 2016-11-18
Abstract: The present invention relates to a method for preparing a Maxillaria extract, a Maxillaria extract prepared by the method and having an antioxidant activity and a melanin production inhibition effect, and a cosmetic composition and a pharmaceutical composition comprising the Maxillaria extract. According to the present invention, Maxillaria is extracted with a mixed solvent obtained by mixing at least one solvent selected from the group consisting of water, ethanol, n-pentane, diethyl ether, and combinations thereof.
Patent KR-20180057286-A (KR)
Inventor: KIM HEE CHUL
IPC: B60T8/48
Filed: 2016-11-22
Abstract: A hydraulic valve of an assistant brake apparatus for a vehicle according to the present invention includes a valve housing having a passage, through which a hydraulic pressure oil flows, therein, a spool installed along the interior of the valve housing such that the location thereof can vary selectively to apply and release a hydraulic pressure; a solenoid assembly installed on one side of the valve housing to selectively apply an external force to the spool such that the location of the spool can vary; and a repulsive operation rod installed in the interior of the spool to slide to apply a repulsive force to the spool in a direction that is opposite to the hydraulic pressure such that the hydraulic pressure can be adjusted more precisely by the spool. According to the present invention, since oil sludge that can be left in the interior of the valve housing can be prevented, the malfunction of the hydraulic valve due to oil sludge can be minimized.
Patent KR-20180058539-A (KR)
Inventor: PARK YONG RYUL
IPC: H04L29/06
Filed: 2016-11-24
Abstract: The present invention relates to a separated network linking system and a control method thereof. The separated network linking system according to the present invention includes a first gateway connected to a first communication network, and a second gateway connected to a second communication network, and physically separates the first communication network from the second communication network while communicating between the first gateway and the second gateway by using a non-standard protocol. The first gateway extracts an Internet protocol (IP) header and 64-bit data after the IP header from a communication packet according to a standard protocol received from the first communication network, stores the extracted IP header and 64-bit data as data for processing Internet control message protocol (ICMP), converts the communication packet into a packet according to the non-standard protocol, transmits the converted packet to the second gateway, generates a new ICMP packet including the data for processing ICMP when a communication connection error packet is received from the second gateway, and transmits the generated new ICMP packet to the first communication network. The second gateway converts the packet according to the non-standard protocol received from the first gateway into a communication packet according to the standard protocol, transmits the converted communication packet to the second communication network, and transmits the communication connection error packet to the first gateway when detecting an error in the communication connection. Thus, a security problem occurring due to direct transmission of the ICMP packet can be solved.
Patent KR-20180060259-A (KR)
Inventor: HONG SUNG WOO
IPC: C08G73/10
Filed: 2016-11-28
Abstract: The present invention relates to a scratch self-curing clear coat composition for a vehicle using a charge transfer complex, clear coat including the same, and a manufacturing method thereof and, more specifically, to a scratch self-curing clear coat composition for a vehicle using a polyimide-based compound capable of forming a charge transfer complex performing stronger interaction than π-π interaction; clear coat including the same; and a manufacturing method thereof. Accordingly, the charge transfer complex allows a dynamic time until recombination of supermolecular combination separated by stronger attractive force than a simple π-π stacking attractive force to be efficiently reduced and also allows the recombination between the supermolecules to be facilitated, thereby providing effects capable of reducing the time required for curing a scratch, and realizing repetitive curing.
Patent KR-20170091503-A (KR)
Title: Contents passing device, valve, and containing apparatus, contents moving apparatus and contents apparatus having the contents passing device and valne
Inventor: PARK SUH JUN
IPC: B65D25/00
Filed: 2016-11-29
Abstract: The present invention relates to a passing device, a valve, a storage tool having the device and the valve, a contents moving tool, and a contents tool. The present invention comprises a passing operation unit provided to a housing to guide movement of contents and having a contents passing means moving the contents. The present invention secures a passing space of the contents as compared to the existing technology and controls an intake space and the passing space to restrain intake of the contents over a demand amount. Moreover, the present invention stably guides the contents to pass the demand source within a predetermined range and is linked to restraint of the intake space of the contents to prevent the excessive contents from being remained to control the intake amount (the number) of the contents.
Patent KR-20180064901-A (KR)
Inventor: LEE JOO HUN
IPC: G06Q20/12
Filed: 2016-12-06
Abstract: According to an embodiment of the present invention, a payment method is a method with which a payment management system performs payment. The payment method includes: a step of receiving a payment code generation request from a seller terminal; a step of generating a payment code and transmitting the payment code to a seller terminal; a step of receiving a payment approval request together with payment amount information from a customer terminal which has scanned and recognized the payment code; and a step of verifying the payment approval request and processing payment. It is possible to perform safe and easy payment.
Patent KR-20180065089-A (KR)
Inventor: KIM BONG SEOK
IPC: A43B7/02
Filed: 2016-12-07
Abstract: The present invention relates to a customized shoe and, more specifically, to a customized shoe which maximizes the wearing sensation by allowing the shape of a shoe to be changed according to the shape of a foot of a user. According to the present invention, the customized shoe comprises: a bottom part which comes in contact with the ground; an upper part which is attached to the bottom part and surrounds the foot; an insole part including a molding layer which is formed on the top surface of the bottom part, is able to be molded when heated to a specific temperature or more, and is made of a material that is hardened at room temperature, and a heating layer which is provided on a heating sheet stacked on the top of the molding layer, and is heated by power supplied from the outside; and an upper adjusting part which adjusts an angle formed between the bottom part and a surface in contact with the top of the foot in the upper part.
Patent KR-20180067003-A (KR)
Inventor: KIM GANG SAN
IPC: E06B9/52
Filed: 2016-12-12
Abstract: The present invention relates to a replaceable fine dust blocking filter for a window. More specifically, the present invention relates to a replaceable fine dust blocking filter for a window, wherein the fine dust blocking filter is installed at the outside of a window screen. When lots of fine dust is in the air, the fine dust blocking filter is installed. When there is less fine dust, the fine dust blocking filter is separated. When the fine dust blocking filter is contaminated, the fine dust blocking filter is replaced, so that the fine dust blocking filter is not be replaced unnecessarily. According to the present invention, the replaceable fine dust blocking filter for a window comprises: the fine dust blocking filter, wherein an adjustment body is fixed inside a window screen frame having the window screen formed therein and a porous absorbent is installed inside the adjustment body; an adjustment unit including a moving groove, in which the fine dust blocking filter is horizontally moved, and a detachable blocking frame; and a fixing roll to fix the upper and lower parts of the fine dust blocking filter to the adjustment body.
Patent KR-20170074181-A (KR)
Title: 반송 장치, 기반 및 그 제조 방법
Inventor: SASAOKA YOSHIKAZU
IPC: B65G29/00
Filed: 2016-12-14
Abstract: 반송 장치는, 제1 기반(140)과, 제2 기반(170)과, 제1 구동부(130)와, 제2 구동부(160)를 포함한다. 제1 기반(140)은 판상의 주요부(141), 및 주요부(141)의 적어도 외주부의 하면을 덮고, 주요부(141)를 구성하는 재료와는 다른 재료로 구성되어 전기 절연성을 가지는 피복부(142)를 포함한다. 제2 기반(170)은 피복부(142)를 구성하는 재료와는 다른 재료로 구성되어 전기 절연성을 가지는 외주부를 포함한다. 제2 기반(170)의 외주부의 상면은 제1 기반(140)의 피복부(142)와 미끄럼 접촉한다. 제2 기반(170)의 외주부의 상면에 제1 기반(140)이 순차 반송한 복수의 워크가 올려 놓여진다.
Patent KR-20180071543-A (KR)
Inventor: YANG SEUNG HAE
IPC: G06Q20/20
Filed: 2016-12-20
Abstract: According to the present invention, disclosed are information management and system construction techniques. That is, according to an embodiment of the present invention, an integrated management system for grasping released product information and providing the information and a driving method thereof are provided to generate the released product information about at least one among a plurality of displayed products released and load the generated information on an exclusive API program for grasping a released product situation by a POS terminal, and selectively provide the released product information, which belongs to at least one category checked through the exclusive API program for grasping a released product situation, to a communication terminal of a ministry of government administration, a communication terminal of a city government or municipal government, or a communication terminal of a small and medium sized company.
Patent KR-20180073900-A (KR)
Inventor: LEE MYONG JAE
IPC: B01D35/18
Filed: 2016-12-23
Abstract: The present invention relates to a water purifier capable of producing hydrogen water and oxygen water, wherein water contained in a dissolution tank is purified and electrolysed, and hydrogen gas and oxygen gas generated therefrom is supplied to the dissolution tank. The water purifier comprises a dissolution tank, a filter unit, a deionization unit, an electrolysis unit, and a mixing supply unit. The dissolution tank is divided into an oxygen dissolution chamber containing first raw water and a hydrogen dissolution chamber containing second raw water. The filter unit includes a first filter configured to filter the first raw water discharged from the oxygen dissolution chamber, and includes a second filter configured to filter the second raw water discharged from the hydrogen dissolution chamber. The deionization unit eliminates ionic substances contained in part of the first raw water filtered at the first filter. The electrolysis unit electrolyses the raw water discharged from the deionization unit to generate oxygen gas and hydrogen gas. The mixing supply unit includes a first mixer and a second mixer, wherein the first mixer mixes the remainder of the first raw water filtered at the first filter with the oxygen gas generated at the electrolysis unit to be supplied to the oxygen dissolution chamber, and the second mixer mixes the second raw water filtered at the second filter with the hydrogen gas generated at the electrolysis unit to be supplied to the hydrogen dissolution chamber.
Patent KR-20180074931-A (KR)
Inventor: KIM JAE IL
IPC: A45D44/00
Filed: 2016-12-26
Abstract: The present invention relates to a method for manufacturing a nonwoven fabric of quantum dots, a nonwoven fabric of quantum dots manufactured thereby, and a cosmetic product using the same, wherein the method comprises: a step of producing a quantum dot-polymer composite by compounding hydrophobically surface-treated quantum dots and polymers; and a step of producing a nonwoven fabric by putting the quantum dot-polymer composite into a melting spinning device. According to the present invention, by introducing fluorescent quantum dots into a nonwoven fabric having no luminescence and utilizing the fluorescent quantum dots for the production of cosmetic products such as a mask pack or a cosmetic cotton in contact with a user, the nonwoven fabric which retains the existing physical properties is imparted with fluorescence, such that the user is provided with fun and excitement and the distinction as a nonwoven fabric product is obtained, thereby improving the competitiveness of the product.
Patent KR-20180077388-A (KR)
Inventor: SEO YOUNG SEOK
IPC: H01L27/32
Filed: 2016-12-28
Abstract: The present invention relates to a display device, which comprises: a display panel having a plurality of pixels displaying images and a shielding member disposed on the pixels to define a display area and a non-display area and having a curvature unit; and a support leg connected to a first surface of the display panel and supporting the display panel. Moreover, the plurality of pixels comprises: a first pixel which does not overlap the curvature unit from a plan view; and a second pixel of which at least a portion overlaps the curvature unit. In addition, the first and the second pixels display the images on a second surface facing the first surface.
Patent KR-20180078604-A (KR)
Inventor: Kim dae chun
IPC: G06F17/18
Filed: 2016-12-30
Abstract: The present invention relates to a communication device equipped with a program which collects data in time-series from a sensor, a node and a gateway, executes regression analysis in real time, calculates a coefficient of determination (R2) value determined by a user and transmits the value through analogue and digital communication methods of wired and wireless, and a communication method using the same.
Patent KR-20160034387-A (KR)
Title: 신규한 인돌리진 유도체, 이의 생성을 위한 방법 및 이를 함유하는 약학적 조성물
Inventor: LE TIRAN ARNAUD
IPC: C07D487/04
Filed: 2014-07-22
Abstract: 본 발명은 R a , R b , R c , R d , T, R 3 , R 4 , R 5 , X, Y 및 Het가 상세한 설명에 정의된 바와 같은 하기 화학식 (I)의 화합물에 관한 것이다.  본 발명은 또한 이를 함유하는 약물에 관한 것이다.
Patent KR-20160042059-A (KR)
Title: 후면측 냉각 그루브들을 갖는 스퍼터링 타겟
Inventor: WEST BRIAN T
IPC: H01J37/34
Filed: 2014-08-14
Abstract: 본 개시물의 구현예들은 기판을 프로세싱하는데 사용되는 스퍼터링 챔버를 위한 스퍼터링 타겟에 관한 것이다.  일 구현예에서, 스퍼터링 챔버를 위한 스퍼터링 타겟이 제공된다.  스퍼터링 타겟은, 방사상 내측, 중간, 및 외측 영역들을 갖는 후면측 표면을 갖는 스퍼터링 플레이트, 및 스퍼터링 플레이트에 장착되는 환형 배킹 플레이트를 포함한다.  후면측 표면은 서로 이격되어 있는 복수의 원형 그루브들 및 원형 그루브들을 가로지르며 스퍼터링 플레이트의 방사상 내측 영역으로부터 방사상 외측 영역으로 연장하는 적어도 하나의 아치형 채널을 갖는다.  환형 배킹 플레이트는 스퍼터링 플레이트의 후면측 표면을 노출시키는 개방된 환상체를 정의한다.
Patent KR-20160044020-A (KR)
Inventor: BLACK KAREN J
IPC: A41F15/00
Filed: 2014-08-18
Abstract: 브라는 전면부, 배면부, 토르소 밴드 및 한 쌍의 어깨 스트랩을 포함한다.  전면부의 영역들에는 선택적으로 내층, 외층 및 중간 직물층이 마련된다.  중간 직물층은 상대적 지지용 재료로 이루어지며, 착용자의 가슴의 상부와 측부를 따라 배치되도록 구성된다.
Patent KR-20160044584-A (KR)
Title: 액체 수용 용기 및 액체 분사 장치
Inventor: KOIKE YASUNORI
IPC: B41J2/175
Filed: 2014-10-22
Abstract: 종래의 액체 수용 용기에서는, 액체의 폐기를 경감하는 것이 곤란하다.  본 발명은, 액체를 수용 가능한 수용부(65)와, 수용부(65)에 개구되고, 액체를 수용부(65) 내에 주입 가능한 잉크 주입부(101)와, 대기와 연통하는 제 3 대기실(72)과, 제 3 대기실(72)에 연통하고, 제 3 대기실(72)에 대기를 도입 가능한 대기 도입부와, 수용부(65)와 제 3 대기실(72)을 연통시키는 제 2 연통로(73)를 구비하고, 잉크 주입부(101)와 수용부(65)가 교차하는 교차부를 액체 주입구라고 정의할 때, 상기 액체 주입구를 수평 방향과 교차하는 방향에서 상방을 향한 자세에 있어서, 제 2 연통로(73)의 제 3 대기실(72)측으로부터 수용부(65)측으로 향하는 경로 중 상방으로부터 하방으로 향하는 경로인 제 5 통로(155)에, 액체를 저류 가능한 제 1 버퍼실(74) 및 제 2 버퍼실(75)이 설치되는 것을 특징으로 하는 액체 수용 용기를 제공한다.
Patent KR-20160077102-A (KR)
Inventor: GLICKFIELD SARAH
IPC: H04L12/58
Filed: 2014-10-23
Abstract: 본 개시는 제 1 사용자 디바이스의 제 1 사용자의 아이덴티티를 확인하는 것에 관련된다.     일 양태는, 제 1 사용자의 아이덴티티를 확인하기 위한 요청을 수신하는 단계, 제 1 사용자 디바이스와 연관된 사용자 상호작용들의 제 1 리스트 및 제 2 사용자 디바이스와 연관된 사용자 상호작용들의 제 2 리스트에 기초하여 제 1 사용자 또는 제 1 사용자 디바이스와 제 2 사용자 디바이스의 제 2 사용자 또는 제 2 사용자 디바이스 사이에 관계가 있는지 여부를 결정하는 단계, 및 제 1 사용자 또는 제 1 사용자 디바이스와 제 2 사용자 또는 제 2 사용자 디바이스 사이에 관계가 있다고 결정하는 것에 응답하여 제 1 사용자의 아이덴티티를 확인하는 단계를 포함한다.
Patent KR-20160082541-A (KR)
Inventor: KULKARNI DATTATRAYA
IPC: H04L29/08
Filed: 2014-12-23
Abstract: 본원은 컴패니언 장치에 비해 웨어러블 장치가 일부 방식에서 그 기능이 제한되는 경우에 이 웨어러블 장치에 서비스를 제공하는 시스템 및 방법에 관한 것이다. 특히, 본원은 웨어러블 장치를 구성하는 사용 사례와, 컴패니언 장치를 활용하는 동안 웨어러블 장치를 구성하고 이 웨어러블 장치상에서 서비스 애플리케이션 기능을 수행하는 사용 사례를 설명한다.
Patent KR-20160085868-A (KR)
Inventor: KWON WOOSUK
IPC: H04L1/00
Filed: 2014-12-31
Abstract: 본 발명의 RoHC 패킷 스트림을 포함하는 방송 신호 송수신 방법 및 장치에 관한 것이다. 본 발명의 일 실시예에 따른 방송 신호 송신 방법은 IP 패킷 스트림에 포함된 IP 패킷의 헤더를 압축하여 RoHC 패킷 스트림을 생성하는 단계, 상기 생성된 RoHC 패킷 스트림에 포함된 RoHC 패킷의 제 1 부분을 추출하는 단계, 상기 RoHC 패킷의 제 2 부분을 다른 타입의 RoHC 패킷으로 변환하는 단계, 상기 변환된 다른 타입의 RoHC 패킷을 포함하는 새로운 패킷 스트림을 재구성하는 단계, 상기 재구성된 패킷 스트림을 제 1 채널을 통해 전송하는 단계, 상기 추출된 제 1 부분을 제 2 채널을 통해 전송하는 단계를 포함한다.
Patent KR-20170030462-A (KR)
Inventor: LI GUOSHENG
IPC: G09G3/34
Filed: 2015-12-25
Abstract: 본 발명은 디스플레이 휘도를 감소시키는 방법 및 장치에 관한 것으로, 디스플레이 기술 분야에 속한다. 본 발명은 변환된 감마 곡선을 획득하는 것을 통해, 디스플레이하고자 하는 화소점의 계조 화소치에 근거하여 변환된 감마 곡선에서 대응되는 계조 전압을 조회하고, 화소점에 대응되는 스캔 시각에, 액정 디스플레이 화면의 화소점에 대응되는 데이터 케이블로 조회된 계조 전압을 출력한다.
Patent KR-20160106625-A (KR)
Title: 필름형 접착제, 필름형 접착제를 갖는 다이싱 테이프, 반도체 장치의 제조 방법, 및 반도체 장치
Inventor: SUGO YUKI
IPC: C09J11/04
Filed: 2014-12-22
Abstract: 본 발명은 도전성이 우수한 필름형 접착제, 필름형 접착제를 갖는 다이싱 테이프를 제공한다. 본 발명은 본 발명은 특정 형상의 도전성 입자를 포함하는 필름형 접착제에 관한 것이다. 도전성 입자로서는, 금 입자, 은 입자, 구리 입자 및 피복 입자 등을 들 수 있다. 피복 입자는 코어 입자 및 코어 입자를 피복하는 피복막을 구비한다. 피복막의 재질로서는, 예컨대, 금, 은, 구리 등을 들 수 있다.