baber/WOPTO huggingface dataset:
Patent KR-20040059453-A (KR)
Title: Method for fabricating capacitor using atomic layer deposition
Inventor: KIL DEOK SIN
IPC: H01L27/04
Filed: 2002-12-30
Abstract: PURPOSE: A method for manufacturing a capacitor using an ALD(Atomic Layer Deposition) is provided to improve electrical properties of a dielectric film by preventing a metallic Al2O3 layer and hydrogen between a lower electrode and the dielectric film. CONSTITUTION: A lower electrode(10) is formed on a semiconductor substrate. A dielectric film is deposited on the lower electrode. The dielectric film includes a chemical oxide(12) and an Al2O3 layer. The Al2O3 layer includes a seed layer(14) formed by using Al(CH3)3 as a source and an upper layer(16). An upper electrode(18) is formed on the dielectric film. The lower electrode is formed by depositing sequentially a doped polysilicon layer with a thickness of 50 to 300 angstrom and an undoped polysilicon layer with a thickness of 50 to 300 angstrom, and then doping PH3 under nitrogen gas atmosphere at the temperature of 500 to 700 °C. The chemical oxide with a thickness of 5 to 10 angstrom is formed by cleaning the lower electrode using HF+SC-1(NH4OH: H2O2: H2O). The seed layer and the upper layer of the Al2O3 layer are formed by using O3 gas and H2O gas as reaction gases, respectively.
Patent KR-20020027501-A (KR)
Title: Radio system and stations for, and method of, multicast communication
IPC: H04L12/18
Filed: 2001-05-01
Abstract: A multicast radio data communication system comprising a master (1) and a plurality of slave stations (2, 3, 4), and using a retransmission protocol. Data is transmitted by the master station and received by the slave stations. One slave station is designated the primary slave station, and all other slaves are designated secondary slave stations. Any slave station may transmit a negative acknowledgement but only the primary slave may transmit a positive acknowledgement. Positive and negative acknowledgements are transmitted substantially simultaneously. Negative acknowledgements corrupt reception of the positive acknowledgement by the master station, thereby ensuring that the data is retransmitted. The primary slave station is selected to have the lowest quality radio link, which may be ensured by a power control command from the master.
Patent KR-20020044159-A (KR)
Title: Measurement of current in a vehicle using battery cable as a shunt
IPC: G01R19/00
Filed: 2000-10-03
Abstract: Current flowing into and out of a battery installed in a vehicle (V) with the required cable between one of the battery terminals and a reference point on the vehicle is determined by measuring the voltage across the cable and computing the current from the digital value of the measured current. The resistance value of the cable can be known in which case the current is computed using Ohms law and a differential current sensor can be used to respond to the voltage measured across the cable to accommodate for different ranges of current. In an embodiment where the cable resistance is unknown, a reference current source produces a known voltage that is used to set the input value to an amplifier of fixed gain for the voltage measured across the cable by controlling the output of a potentiometer so that the amplifier output voltage can be set to match the reference current generator output voltage, thereby establishing the voltage output of the amplifier as a measurement of the current flow in the cable.
Patent KR-20020059673-A (KR)
Title: 전기 투석에 의한 아미노산 함유 용액의 정제 방법
IPC: C01D1/44
Filed: 2000-11-03
Abstract: 본 발명은 전기 투석에 의해 아미노산-함유 용액을 정제하는 방법에 관한 것인데, 여기서 아미노산-함유 용액은 1종 이상의 아미노산을 생성하기 위한 발효로부터 얻은 것이 사용된다.
Patent KR-20020065547-A (KR)
IPC: H04S3/02
Filed: 2000-11-28
Abstract: 다양한 등가 적응형 매트릭스 장치들이 기술되어 있으며, 그 각각은 매트릭스 출력에서의 바람직하지 않은 매트릭스 크로스토크 성분들의 소거를 자동으로 초래하는 피드백-유도 제어 시스템을 포함한다. 각각의 적응형 오디오 매트릭스 장치는 두 개의 입력 신호들에 응답하여 수동 매트릭스 쌍을 발생시키는 수동 매트릭스를 포함한다. 피드백-유도 제어 시스템은 수동 매트릭스 신호들의 각 쌍에서 작동되어, 중간 신호들의 쌍의 크기들이 균등하게 되도록 강제한다. 각 제어 시스템은 가변 이득 요소들, 및 상기 가변 이득 요소들을 제어하기 위한 제어 신호들의 쌍을 발생시키는 피드백 및 비교 장치를 포함한다. 추가적인 제어 신호들은 적응형 매트릭스로부터 4 개 이상의 출력 신호들을 얻는데 사용하기 위해 두 쌍의 제어 신호들로부터 유도될 수 있다.
Patent KR-20020062961-A (KR)
IPC: G06F13/00
Filed: 2000-12-08
Abstract: 본 발명에서는, 뒤로 기능, 앞으로 기능, 이력 기능, 바로가기 기능, 기타 기능, 리마인더 기능, 즐겨찾기 기능, 부모 통제 기능, 및 검색 기능을 포함한 대화형 텔레비전 애플리케이션의 진보된 기능들에 대해 개시하고 있다.  본 발명에서는, 또한 다중 데이터 경로, 인터넷 접속, 대화형 서비스, 및 사용자 프로파일에 대한 지원에 대해서도 개시하고 있다.
Patent KR-20020084086-A (KR)
IPC: C25D21/12
Filed: 2001-02-23
Abstract: In order to regulate the metal ion concentration in an electrolyte fluid serving to electrolytically deposit metal and additionally containing substances of an electrochemically reversible redox system, it has been known in the art to conduct at least one portion of the electrolyte fluid through one auxiliary cell provided with one insoluble auxiliary anode and at least one auxiliary cathode, a current being conducted between them by applying a voltage. Accordingly, excess quantities of the oxidized substances of the redox system are reduced at the auxiliary cathode, the formation of ions of the metal to be deposited being reduced as a result thereof. Starting from this prior art, the present invention relates to using pieces of the metal to be deposited as an auxiliary cathode.
Patent KR-20020077489-A (KR)
IPC: G10G1/02
Filed: 2001-01-29
Abstract: 휴대 전화기는 호출의 착신을 알리는 착신 신호를 수신하여 통화를 가능하게 하는 통화부와, 착신 신호의 수신에 따라 악곡 데이터를 처리하고, 멜로디 파트 및 반주 파트를 포함하는 다수의 파트로 이루어진 악곡을 재생하여, 호출의 착신을 청각적으로 통지할 수 있는 재생부를 가진다.  과도한 작업량을 필요로 하지 않고, 누구라도 재생용의 악곡을 작곡할 수 있게 하기 위해, 멜로디용의 악보 데이터를 입력(IN1)하고, 이어서 반주 파트를 생성할 때에, 스타일 정보와 코드 정보를 입력한다.  입력된 스타일 정보와 코드 정보에 따라, ROM(12) 또는 RAM(11)으로부터 드럼 파트, 베이스 파트, 코드 파트의 반주 데이터가 선택(SE1)된다.  선택된 다수 파트의 반주 데이터와 멜로디용의 악보 데이터를 합성(PR1)하여 악곡 데이터를 생성한다.  생성된 악곡 데이터는 RAM(11)의 오리지널 악곡 데이터 영역에 격납되어, 착신시에 재생되게 된다.
Patent KR-20030005214-A (KR)
IPC: A23L27/21
Filed: 2001-03-26
Abstract: 본 명세서에는 시스테이닐글리신을 다량 함유하는 천연 식품 소재, 나아가서는 식품 풍미 증강제를 제공할 수 있는 (1) 글루타티온을 고형분 점유 비율로 1중량% 이상 함유하는 식품 소재를 물의 존재하에 pH 1 내지 7에서 50 내지 120℃로 유지하거나, 당해 식품 소재에 물의 존재하에 pH 3 내지 9 및 15 내지 70℃에서 γ-글루타밀 펩타이드 가수분해 효소를 작용시킴을 특징으로 하는, 시스테이닐글리신을 다량 함유하는 식품 소재의 제조방법 및 (2) 시스테이닐글리신 또는 시스테이닐글리신을 고형분 점유 비율로 0.5중량% 이상 함유하는 식품 소재에 당류를 첨가하고 물의 존재하에 온도 70 내지 180℃에서 10 내지 180분 동안 가열함을 특징으로 하는, 식품 풍미 증강제의 제조방법이 기재되어 있다.
Patent KR-20030032941-A (KR)
IPC: C12N5/02
Filed: 2001-04-26
Abstract: 만능 줄기 세포가 간세포 분화 제제의 존재 하에 배양되는 경우, 간 세포에 특징적인 표현형을 갖는 세포의 비율이 현저히 높은 세포군이 유도된다는 것이 발견되었다.  하나의 예에서, 인간 배아 줄기 세포는 배상체를 형성한 후, 임의로 성숙 인자가 보충된 분화 제제 n-부티레이트와 배합된다.  또다른 예에서, n-부티레이트는 영양 세포가 없는 배양물 중의 인간 배야 줄기 세포에 첨가된다.  어떤 방식으로든, 간세포에 특징적인 표면 마커를 발현하고, 간 기능에 중요한 효소 및 생합성 활성을 갖는 세포가 우세한 현저히 균일한 세포군이 수득된다.  줄기 세포는 배양물 중에서 쉽게 증식하므로, 상기 시스템은 다양한 응용, 예컨대 약물 스크리닝 및 임상 처치와 관련된 간 기능의 보충을 위한 간세포 계통 세포의 풍부한 공급원을 제공한다.
Patent KR-20030019387-A (KR)
IPC: G06F21/62
Filed: 2001-07-26
Abstract: 충분한 보안을 확보하면서 이용 시의 암호코드 대조의 필요/불필요를 전환한다.  EEPROM(11)과 이것을 액세스하기 위한 CPU를 가지는 IC 카드를 준비한다.  EEPROM 내의 일반데이터에는 오류검사코드를 부가하여 저장해 둔다.  EEPROM(11)의 기억영역을 2바이트 길이의 단위영역으로 분할하고, 기록은 단위영역마다 행한다.  특정한 단위영역 Ux의 MSB를 대조 필요/불필요 플래그로 하고, "1"은 대조 "필요", "0"은 대조 "불필요"라고 정의한다.  암호코드 대조처리는 대조 필요의 경우에만 행한다.  단위영역 Ux 내의 데이터에는 오류검사코드를 부가하지 않는다.  대조 필요/불필요 플래그를 갱신하는 때에는 단위영역 Ux 내의 전체 비트를 "1"로 하는 소거처리를 행한 후, MSB에 원하는 플래그를 설정한다.
Patent KR-20030026244-A (KR)
IPC: G03B21/60
Filed: 2001-06-12
Abstract: 일반적인 평면 광분산 시트 또는 스크린(12)은, 본 발명의 한 구현예에 의하면 최대 정렬이득이 시트 또는 스크린 평면의 수직방향에서 특정한 각도로 축에서 벗어난(off-axis) 특성을 가지고 있다. 
     본 발명의 다른 구현예에 의하면, 최대 이득은 상기 시트 또는 스크린 평면의 수직방향에서 0도에서 20도의 각도에서 존재한다. 상기 스크린은, 광 분산 특성이 적어도 부분적으로 분산물질의 굴절률(refractive index)의 변화에 의한 것인 광중합체로 이루어질 수 있으며, 상기 굴절률의 변화는, 그러한 시트 또는 스크린 평면의 수직방향에 대해서 기울어진 광학축을 가지는, 경사진 굴절률 렌즈 또는 연속적인 광학 특성에 의해 정의된다.
Patent KR-20030014717-A (KR)
Title: Floor covering
IPC: E04F15/02
Filed: 2001-06-20
Abstract: The invention concerns a floor covering consisting of hard panels (2) which are provided, at least on two opposite edges (3-4, 5-6), with coupling means (7) made in one piece with the panels (2), whereby these coupling means (7) provide for an interlocking in a direction (R1) perpendicular to the plane of the floor covering (1), as well as in a direction (R2) perpendicular to the edges (3-4, 5-6) concerned and parallel to the plane of the floor covering (1).
Patent KR-20040064813-A (KR)
Title: Synthetic resin loathing method of steel
Inventor: BYUN MOO WON
IPC: B05D7/14
Filed: 2003-01-10
Abstract: PURPOSE: A synthetic resin loathing method of steel effectively by using residual heat after producing the shape steel is provided. CONSTITUTION: In the method for producing a shape steel comprising the steps of heating a billet in a heating furnace(1), rolling heated billet by continuously arranged rollers(2) to make a predetermined shape, cooling the shape steel under the desired temperature with the shape steel rolled widthwise by a conveying bed(3) and cutting the shape steel to have desired length, the method comprises: spraying plastic by a plurality of plastic sprayers(4) on the shape steel with reciprocating in the longitudinal direction in the path where the shape steel is rolled.
Patent KR-20040065744-A (KR)
Inventor: LEE GANG UK
IPC: B60R7/06
Filed: 2003-01-16
Abstract: PURPOSE: A glove box with a separation type reinforcement member for a vehicle is provided to prevent a passenger from being injured by the deformation of the glove box in a vehicle crash by detachably mounting the reinforcement member to the front of a housing. CONSTITUTION: In a glove box for a vehicle, a reinforcement member(400) is disposed between a cover(200) and a housing(100). The reinforcement member is detachably coupled to the front of the housing, and includes a plurality of vertical and horizontal partitions(420,410) widening toward the rear in width.
Patent KR-20040070402-A (KR)
Inventor: KWAK DONG U
IPC: D05C11/06
Filed: 2003-02-03
Abstract: PURPOSE: Provided is a non-contact type embroidery needle shift driver which prevents the needle driving member from contacting the needle shaft, thereby blocking the device breakage or abrasion, and inhibiting the noise occurrence. CONSTITUTION: The non-contact type embroidery needle shift driver comprises: a needle driving member(100) mounted at a guide member(110) to hold or release a needle shaft; a protrusion protruded from a lateral side of the needle driving member; a fitting member(200) elastically pressurizing the protrusion to give a restoring force to the needle driving member; a spacing knob(220) pushing the fitting member to space the pressurizing end thereof apart from the mobile area of the protrusion; and a driving location fixation member disposed between the needle driving member and the guide member to fix the needle driving member at the holding or releasing location thereof.
Patent KR-20040071537-A (KR)
Inventor: KIM GYEONG HO
IPC: E02F9/20
Filed: 2003-02-06
Abstract: PURPOSE: A flow control system of a hydraulic system is provided to shorten the time required for works by controlling the flow rate supplied to an attachment and to prevent the deterioration of equipment by preventing the excessive load on equipment by supplying appropriate flow to an attachment. CONSTITUTION: The flow control system of a hydraulic system comprises: an attachment switch(10) operated to change the supply direction of a fluid according to the kind of an attachment(70) and to supply the appropriate flow rate to an attachment(70); a controller(20) controlling the power supplied from a power supply unit, then supplying to a proportional control valve(30); a proportional control valve(30) controlled by the power control of the controller(20) controlled by the attachment switch(10) to control the hydraulic pressure and the flow rate of hydraulic oil generated from a pilot pump(40); the pilot pump(40) generating hydraulic pressure to drive an attachment(70); a main control valve(60) supplying the hydraulic pressure generated from the main pump(50) to an attachment(70); and an angle regulator(51) controlling an angle of a swash plate of the main pump(50) by receiving the pilot pressure formed in the pilot pump(40) through a shuttle valve(41).
Patent KR-20040071988-A (KR)
Title: Interior panel for vehicle and manufacturing method thereof
Inventor: JANG IK GEUN
IPC: B29C45/14
Filed: 2003-02-07
Abstract: PURPOSE: An interior panel for a vehicle and a method for manufacturing the same are provided to improve assembly efficiency and productivity by firmly coupling a skin material with a main material and simplifying a manufacturing process. CONSTITUTION: A method for manufacturing an interior panel comprises the steps of: providing a skin material(15); providing upper and lower molds(21,31) having cores(25) with molding parts(23,33); setting the skin material at one molding part of the upper and lower molds; forming a molding space; integrating the skin material with a main material; and separating the upper mold from the lower mold.
Patent KR-20040073197-A (KR)
Inventor: PARK SEONG RYONG
IPC: B60R21/205
Filed: 2003-02-13
Abstract: PURPOSE: A structure for mounting an airbag for protecting the knees of a passenger is provided to prevent first and second airbags from being twisted by separating the first airbag from the second airbag. CONSTITUTION: In an airbag system for protecting the knees(3) of a passenger, first and second fitting protrusions(21,22) are formed at the inner edge of a knee protective unit(20), and are fit into protrusions formed at a cowl panel(5). Separation preventing protrusions(27,28) are adjacent to the first and second fitting protrusions, and prevent first and second airbags(7a,7b) from being separated outside. A partition(23) is formed at the inner face of the knee protective unit, and separates the first airbag from the second airbag.
Patent KR-20040074459-A (KR)
Title: Method for forming storage node of semiconductor capacitor
Inventor: LIM SEONG SU
IPC: H01L27/108
Filed: 2003-02-19
Abstract: PURPOSE: A method for forming a storage node of a semiconductor capacitor is provided to prevent a bridge between neighboring storage nodes by performing a dry-etch process instead of an existing wet-etch process. CONSTITUTION: A sacrificial oxide layer(4) is formed on a semiconductor substrate(1) including a predetermined lower structure. A plurality of trenches are formed by etching the sacrificial oxide layer. A conductive layer for storage node is formed on the trenches and the sacrificial oxide layer. The sacrificial oxide layer is exposed by performing a CMP(Chemical Mechanical Polishing) process for the sacrificial oxide layer. A dip-out mask is formed on the semiconductor substrate in order to cover a predetermined region. The uncovered region is removed by performing a dry-etch process using an HF gas and vapor of CH3OH. The dip-out mask is removed therefrom.
Patent KR-20040075451-A (KR)
Inventor: HWANG YONG HUI
IPC: B01D46/42
Filed: 2003-02-21
Abstract: PURPOSE: An air purifier with front panel is provided to suck in air around the air purifier from various sides and create external appearance of the air purifier in various shapes. CONSTITUTION: In an air purifier comprising a main body the front side of which is opened, and a front panel(2) installed in front of the main body, the air purifier is characterized in that the front panel comprises at least one or more of suction grills which are projectingly formed from the front surface of the suction grills to the front side, and on upper and lower parts and both side surfaces of which air inlets(9) are formed so that air is sucked in the main body vertically and horizontally through the air inlets, wherein the suction grills comprise a plurality of connection ribs(31,41) projected to the front side from the front surface of the front panel so that the connection ribs are connected to the front panel, and the air inlets are formed between the respective connection ribs, wherein each of the suction grill comprises first suction grill part(30) and second suction grill part(40) installed at both sides of the front panel, and a plural first suction grill parts are vertically arranged, wherein decorative panels(32) are attached to the front surface of each of the first suction grill part to create the front panel in various colors and designs, and wherein a dust sensor(10) for measuring air polluting potential is installed at the second suction grill part, and a dust sensor cover(20) for covering the dust sensor is attached to the front surface of the second suction grill part in such a manner that the dust sensor cover is attached to or detached from the second suction grill part so that colors and designs of the dust sensor cover are created differently from those of the decorative panels.
Patent KR-20030024745-A (KR)
Inventor: AHN HYEON JIN
IPC: A23L33/20
Filed: 2003-02-26
Abstract: PURPOSE: An obesity suppressing composition which contains an extract of Theae folium and Oenothera odorata Jacq. and effectively inhibits a fatty acid synthase(FAS) gene mutation is provided. The prepared composition is harmless to a human body and can be effectively used in treatment and prevention of various diseases related with obesity. CONSTITUTION: The obesity suppressing composition contains 2 to 3g of Theae folium and 5 to 6g of Oenothera odorata Jacq. in a weight ratio of 1:1 to 2, on a dry basis. For an example, 2g of Theae folium is extracted in 100ml distilled water for 10min, filtered and concentrated under reduced pressure. And 5g of Oenothera odorata Jacq. is refluxed in 100ml distilled water at 25deg.C for 2hr, filtered and concentrated under reduced pressure.
Patent KR-20040054464-A (KR)
Inventor: BONNET ISABELLE
IPC: A61K8/49
Filed: 2003-03-05
Abstract: PURPOSE: The use of a cosmetic or dermopharmaceutical composition containing an enzyme which is insoluble in an aqueous medium in admixture with at least one cosmetically or dermopharmaceutically acceptable excipient is provided. The composition is mainly used for limiting reactions of irritation and/or of allergy, obtaining whitening effect, preventing wrinkles, obtaining boundary effects on skin, and removal of excess sebum in oily skin, promoting the treatment of dry skin and the like. CONSTITUTION: The cosmetic or dermopharmaceutical composition contains an enzyme which is insoluble in an aqueous medium, in admixture with at least one cosmetically or dermopharmaceutically acceptable excipient. The enzyme selected from the group consisting of lipase, oxidoreductase, carbohydrase and protease is a crystallized and cross-linked enzymes having a size of 0.2 to 50μm or enzymes or particles which are infused with water-insoluble polymers, preferably microparticles or nanoparticles and has a size of 0.2 to 50μm. The excipients are selected from the group consisting of butylene glycol, water, Steares-2, Steares-21, phenoxyethanol, methylparaben, ethylparaben, propylparaben, butylparaben and the like.
Patent KR-20040079103-A (KR)
Inventor: LEE SUN GYO
IPC: H04N5/50
Filed: 2003-03-06
Abstract: PURPOSE: A method of changing a channel of a digital broadcasting receiver is provided to enable channel shift only within a channel list set when a menu is off. CONSTITUTION: The current sort mode of channels selected by a user is checked when a channel shift signal is input(S202). It is judged whether corresponding channel information is stored in a buffer or not(S203). A channel number related with the sort mode is copied(S204). A channel number corresponding to a buffer number to be changed is checked(S205). All channel data of the channel number corresponding to the buffer number is read from a channel information database(S206). The all channel data is displayed(S207).
Patent KR-20040081944-A (KR)
Inventor: LEE SANG HUN
IPC: F16N11/00
Filed: 2003-03-17
Abstract: PURPOSE: A device for controlling grease injection is provided to automatically and regularly inject grease and to reduce power consumption. CONSTITUTION: A device for controlling grease injection at low power-consumption is composed of a power switch(SW10) for controlling the supply of electric power, a dip switch(100) for setting grease injection time, a standard signal generating unit(50), a clock dividing circuit(70), a pulse changing unit(80), and a display unit(90). The standard signal generating unit has a pulse generating unit(60) for generating pulse signals according to the setting of the dip switch.
Patent KR-20040082688-A (KR)
Inventor: CHOI GYU SIK
IPC: E04H15/44
Filed: 2003-03-20
Abstract: PURPOSE: A folding frame system is provided to prevent the loss of components by folding up or unfolding for use without dismantling or assembling components, to promote the convenience on use by folding or unfolding by rotating a rotary power input unit, and to carry and keep easily at the folded state. CONSTITUTION: The folding frame system contains: a body(110); a pole(130) installed on the body(110) to be unfolded or folded radially and composed of primary members(131) which are rotatable and secondary members which are coupled with the primary members(131) and moved according to the rotary direction of the primary members(131) to approach to the body(110) or become more distant from the body(110); and a rotary driving unit(160) installed to the body(110) to rotate the primary members(131) simultaneously.
Patent KR-20040082850-A (KR)
Inventor: CHOI BYEONG YUL
IPC: C08G77/06
Filed: 2003-03-20
Abstract: PURPOSE: A preparation method of polydimethylsiloxane having a low viscosity is provided to improve the efficiency of a cracking process by minimizing the amount of dimethylsilicone loss. CONSTITUTION: The preparation method of polydimethylsiloxane having a low viscosity comprises: a step of cracking a hydrolyzed siloxane containing methyl silicate(CH3SiO3) in the presence of an alkali catalyst to form a cyclic polydimethylsiloxane, distilling the cyclic polydimethylsiloxane to obtain residues in liquid phase, adding thereto 1-3pts.wt of an organic solvent with stirring to dissolve the residues; a step of adding thereto 1-2pts.wt of water, based on the amount of the organic solvent which contains the dissolved residues, to extract and remove the alkali catalyst and alkali salts of the methyl silicate; and a step of repeating the extraction process until the pH value of water becomes 7 and distilling the organic solvent to recover a siloxane in the form of dimethylsilicone((CH3)2SiO).
Patent KR-20040083792-A (KR)
Title: Method for manufacturing water-vein wave shielding material and article using the material for preventing harmful electric wave and water vein wave
Inventor: AN JEONG OH
IPC: B32B15/08
Filed: 2003-03-25
Abstract: PURPOSE: Provided are a method for manufacturing a water-vein wave shielding material and an article using the material, which effectively protect people from harmful water-vein waves when used in various places and materials. CONSTITUTION: The method for manufacturing a water-vein shielding material comprises the steps of: adhering a metal material selected from copper, aluminium, zinc, iron and silver onto one or a combination of two selected from paper PP, PE and PVC to prepare a flooring material having a thickness of 0.5mm or less; adhering any metal different from the metal as used above onto the obtained flooring material in a thickness of 0.5mm or less; adhering iron onto the resulting flooring material; and then adhering one or a combination of two selected from paper PP, PE and PVC to prepare a sandwich-type panel. In the method, the metal adhering steps is carried out by vacuum depositing, plating or fixing in a thin layered form of metal.