baber/WOPTO huggingface dataset:
Patent KR-20010088806-A (KR)
IPC: C10M177/00
Filed: 2000-07-21
Abstract: 계면 활성제를 사용하지 않은 완전 수용액에서, 냄새, 색상도 양호한 유황계 극압 첨가제를 제공한다. 또한 소포성, 방청성이 우수하며, 또한 종래의 절삭유나 연삭유에 상당하는 높은 내하중 성능과 율활 성능을 제공하는 절삭액이나 연삭액을 제공한다. 상기 목적은 황화된 히드록시불포화지방산 축합물 염을 포함하여 만들어지는 극압 첨가제에서, 상기 축합물은 유황 함유율 8 내지 15중량(질량)%, 색상 6 이하, 산가 80 ~ 200을 가지는 극압 첨가제 및 이것과 물을 포함하여 이루어지는 연삭액에 의해 달성된다.
Patent KR-20010102910-A (KR)
IPC: G11C16/02
Filed: 1999-10-05
Abstract: 비휘발성 메모리 디바이스는 각 워드 라인들(16 및 18) 상의 메모리 셀들(8a, 10a 및 8b, 10b) 내에 저장된 메모리의 개별적인 페이지들이 개별적으로 소거 및 소거 확인될 수 있도록 각 워드 라인들(16 및 18)에 연결된 다수의 MOS 트랜지스터들(34 및 36)을 포함한다. 메모리 셀들의 페이지 소거 방법은 선택된 워드 라인 상의 선택된 메모리 페이지를 소거하기 위하여, 워드 라인들 중 선택된 것에 소거 전압을 인가하는 단계와; 그리고 선택되지 않은 워드 라인 상의 페이지 소거에 대하여 선택되지 않은 메모리 페이지를 유지하기 위하여, 워드 라인들 중 선택되지 않은 것에 초기 소거-금지 플로팅 전압을 인가하는 단계를 포함한다. 소거 확인 모드에서, 소거 확인 전압은 소거 모드에서 페이지 소거에 선택되었던 워드 라인에 인가되며, 그리고 소거 확인 비선택 전압은 페이지 소거에 선택되지 않았던 워드 라인들에 인가된다.
Patent KR-20010093820-A (KR)
IPC: B25C1/14
Filed: 1999-12-08
Abstract: 강철 또는 콘크리트와 같은 기판에 핀과 같은 패스너(fastener)를 박기 위한 폭발 작동 공구는 격발 시 공구의 배럴(4)내에서 전방쪽으로 구동되고 후속적 격발 전에 공구의 코킹(cocking)에 반응하여 자동으로 재위치되는 구동 피스톤(6)을 포함한다. 피스톤의 재위치는 코킹동안 에너지가 주입되는 스프링-부하 그리퍼 디바이스(14)에 의해 코킹동안 피스톤을 후방쪽으로 스러스트(thrust)함으로써 발생된다.
Patent KR-20010089578-A (KR)
IPC: G01F1/00
Filed: 1999-12-15
Abstract: 본 발명에 따른 개선된 네트워크 플로우 시스템은 적어도 하나의 플로우 측정 장치를 갖는 인터넷/인트라넷 사용 가능형 네트워크 플로우 컴퓨터와, 인터넷 기술을 사용하거나 국부 접속을 통해 플로우 컴퓨터와 통신할 수 있는 호스트 컴퓨터를 구비한다.  일 실시예에 있어서, 인터넷 사용 가능형 네트워크 플로우 컴퓨터는 하나 이상의 측정 장치로부터 원래(raw) 또는 계산된 형태로 플로우 측정 데이터를 수신한다.  호스트 컴퓨터는 인터넷, 인트라넷 또는 국부 접속을 통해 네트워크 플로우 컴퓨터에 접속한다.  호스트 컴퓨터는 호스트 컴퓨터상에서 웹 페이지 형식으로 플로우 데이터의 결과를 관측하는 능력 및 호스트 컴퓨터로부터 플로우 컴퓨터를 원격적으로나 국부적으로 구성 및 제어하는 능력을 구비하는 네트워크 플로우 컴퓨터로부터 데이터를 전송 또는 수신한다.
Patent KR-20020036951-A (KR)
IPC: G03F7/20
Filed: 2000-05-26
Abstract: 스테이지 (63,64) 의 가동부의 제어 정밀도를 향상시킬 수 있음과 동시에, 노광 빔의 광로의 적어도 일부에 고투과율의 기체를 공급하는 경우에, 외부로부터의 기체의 혼입을 줄일 수 있는 노광방법이다.     바닥 (F1) 상에 칼럼 (8A,8B) 을 설치하고, 조명계 (62) 를 칼럼 (8A,8B) 에 직접 고정하고, 레티클 스테이지계 (63), 투영광학계 (PL) 를 방진부재를 통해 칼럼 (8A,8B) 에 고정하고, 웨이퍼 스테이지계 (64) 를 방진대를 통해 바닥 (F1) 상에 설치하고, 간섭계 본체부 (33,34) 를 투영광학계 (PL) 의 지지판 (32) 에 고정한다.     조명계 (62) 를 둘러싼 제 2 서브 챔버 (6), 레티클 스테이지계 (63) 를 둘러싼 제 3 서브 챔버 (23), 투영광학계 (PL) 의 기밀실, 및 웨이퍼 스테이지계 (64) 를 둘러싼 제 4 서브 챔버 (42) 의 경계부를 각각 벨로우즈 (25,36,43) 로 밀봉하여, 노광 빔상으로의 외기의 혼입을 방지한다.
Patent KR-20020010674-A (KR)
IPC: A61P43/00
Filed: 2000-05-26
Abstract: 본 발명은 케모킨, 인터류킨-8(IL-8)에 의해 매개되는 질환 상태의 치료에서의 페닐 우레아의 신규한 용도에 관한 것이다.
Patent KR-20020011427-A (KR)
Title: A process for the preparation of derivatives of Ruscus aculeatus steroid glycosides by enzymatic hydrolysis
IPC: C12P19/44
Filed: 2000-05-29
Abstract: A process for the preparation of desglucodesrhamnoruscin which comprises the enzymatic hydrolysis of Ruscus Aculeatus steroid glycosides (ruscosaponins) by means of crude hydrolases from aspergillus niger.
Patent KR-20030061234-A (KR)
Inventor: LEE HYO DONG
IPC: H05K13/02
Filed: 2002-01-11
Abstract: PURPOSE: A tape feeder is provided to reduce a load forced to a motor and to reduce a time caused by installing an eccentric cam. CONSTITUTION: A guide member(340) is installed at a front part of a tape feeder. The first and second feeding gears are installed at the guide member and are rotated by a rotary shaft. A latch is engaged with the second feeding gear and guides a movement by one pitch. The first and second levers(420,460) are connected to the first and second feeding gears, respectively. An eccentric cam(490) is connected to the second lever and has the eccentricity.
Patent KR-20030062472-A (KR)
Title: 3-Dimensional Visualization Apparatus and Method Using Real Time Power System Simulator
Inventor: CHA SEUNG TAE
IPC: G06G7/62
Filed: 2002-01-17
Abstract: PURPOSE: A device and method for visualizing a system phenomenon is provided to recognize a physical phenomenon for an education of an electric power technician by simplifying and expressing an inertial body such as an actual physical dynamo or a turbine similar to an actual body through a three-dimensional graphic and expressing a responsive movement of the inertial body by localizing a necessary element. CONSTITUTION: In a personal computer connected to a real time electric power system simulator and an Ethernet LAN, a recording medium having a system phenomenon visualizing program is executed for expressing a shaft vibration phenomenon of an inertial body as a three-dimensional graphic animation. Phase variables of inertial bodies being simulated in a real time electric power system simulator are defined(A). A transmission of the variables is requested to the real time electric power system simulator(B). The real time electric power system simulator loads the variables(C). A file storage is decided(D). The variables are stored in a file(E). An apex of each graphic object is calculated(F). Each graphic object is drawn again(G).
Patent KR-20020012622-A (KR)
Title: Deer feed and it additive using persimmon peel
Inventor: JEON BYONG TAE
IPC: A23K1/18
Filed: 2002-01-21
Abstract: PURPOSE: Provided is a functional feed and an additive for a deer using persimmon peel, therefore, the functional feed contains an essential nutrient, that is, tannin, saccharides, vitamins and the like. CONSTITUTION: The feed and the additive for a deer is manufactured by the steps of: peeling a persimmon then drying or cutting its peeling; and powdering and processing dried peeling pieces to be easily mixed with a conventional feed. The persimmon peeling contains glucose and fructose, vitamin A, B and C, pectin, carotinoid and the like.
Patent KR-20020063138-A (KR)
Inventor: NORRLOW OLOF
IPC: C11D3/39
Filed: 2002-01-25
Abstract: PURPOSE: A method for preparing sodium percarbonate granulate, sodium percarbonate granulate prepared by the method and its use are provided to improve the stability of sodium percarbonate granulate by forming a thin film with excellent quality onto the surface of the granulate. CONSTITUTION: The method comprises the steps of dissolving carbon dioxide into water to make an aqueous solution containing dissolved carbon dioxide and bicarbonates; spraying the aqueous solution onto the surface of the sodium percarbonate granulate to form a high density solid thin film of sodium hydrogen carbonate; and removing the remaining fluid. Preferably the thickness of the thin film is 100 nm or less; and the concentration of carbon dioxide of the aqueous solution is 0.25 wt% or more. The sodium percarbonate granulate is used for a detergent, particularly a detergent containing zeolite.
Patent KR-20030067047-A (KR)
Title: Food package
Inventor: HOANG HO YEON
IPC: B65D5/00
Filed: 2002-02-06
Abstract: PURPOSE: A food packing container is provided to prevent the emission of harmful components from the container, to completely intercept the accession of external noxious materials, and to simplify the assembly process thereof. CONSTITUTION: The food packing container(1) comprises an outer sheet made of pulp paper and an inner sheet made of a vinyl resin. After the outer and inner sheets are bonded by the use of a wet-type adhesive, the obtained laminator is cut according to a predetermined pattern so as to achieve the structure of the container that a cap and a body are integrally formed. The wet-type adhesive is an EVA copolymer resin.
Patent KR-20030067426-A (KR)
Inventor: KIM JIN BAE
IPC: A23L13/20
Filed: 2002-02-08
Abstract: PURPOSE: A health food product obtained by blending animal bone powder, meat, glutinous rice flour and additives is provided which is used as a stuffing material for sandwich, steamed stuffed bun, Korean sausage or the like. CONSTITUTION: About 30% by weight of animal bone powder is mixed with 50% by weight of animal meat such as chicken meat in the case of chicken bone and then added with 20% by weight of an additive such as ginseng, jujube, chestnut, pine-nuts, seasonings or the like. The seasonings are green onions, onions, garlics, red pepper powder, seed powder, sugar, gingers, black pepper powder, starch sugar, ketchup, vinegar, sesame oil or the like.
Patent KR-20030069662-A (KR)
IPC: A61K38/49
Filed: 2002-02-22
Abstract: 본 발명은 급성 심근경색증 (AMI)과 같은 혈전 질환의 치료를 위한 개선된 치료법에 관한 것이다.  특히, 본 발명은 야생형 사람 t-PA와 비교하였을 때 향상된 섬유소 특이성 및 연장된 혈장 반감기를 갖는 조직 플라스미노겐 활성제 (t-PA) 변이체와 저분자량 헤파린의 조합에 의한 혈전 질환, 예를 들어 AMI의 치료에 관한 것이다.
Patent KR-20030071354-A (KR)
Title: A personal digital assistant
Inventor: KIM HYEONG YUN
IPC: H04B1/38
Filed: 2002-02-28
Abstract: PURPOSE: A PDA(Personal Digital Assistant) is provided to speak with an object without a separate wireless headset by embedding a Bluetooth function in a PDA body and an input device, respectively and adding a headset function in the input device. CONSTITUTION: A Bluetooth function is embedded in a PDA body(10) and an input device(20), respectively, for performing a Bluetooth communication between the PDA body(10) and the input device(20). The PDA body(10) has a mobile phone function and the input device(20) has a microphone(21) and a speaker(22), for transmitting and receiving a voice between the PDA body(10) and the input device(20). The input device(20) is used as a headset.
Patent KR-20030072415-A (KR)
Title: Vacuum cleaner accessory for transport of grain
Inventor: JIN HYEONG JONG
IPC: A47L9/24
Filed: 2002-03-04
Abstract: PURPOSE: An auxiliary suction port for carrying grain is provided to carry the grain by using the suction force of a vacuum cleaner, and to remove dust or waste from the grain. CONSTITUTION: A suction tube(10) includes a first tube(11) connected to an extended tube in a suction port side, and a second tube(12) integrated with the first tube and connected to an extended tube in a body side. A discharge tube(20) diverges from the border between the first and second tube. A partition(30) is installed at the diverging part of the suction tube and the discharge tube, and has a plurality of minute holes(31).
Patent KR-20030072915-A (KR)
Title: method for setting Point To Point Permanent Virtual Connection of the low speed subscriber
Inventor: LEE JEONG HWA
IPC: H04L12/50
Filed: 2002-03-07
Abstract: PURPOSE: A method for setting a PVC(Permanent Virtual Connection) of a point-to-point low speed subscriber is provided to set the PVC between the low speed subscriber and an ATM exchange subscriber, and to set the PVC between low speed subscribers by using an ATM exchange, thereby supplying an improved service to the low speed subscribers. CONSTITUTION: A system inputs parameters of a subscriber for setting a PVC(S1), and decides whether the inputted parameters are available(S2). If so, the system calls PPCCF(Point to Point PVC Control Software) as a remote procedure(S3). An ADD-PPVC(Add Point to Point PVC) thread decides whether the subscriber is a low speed subscriber(S4). If so, the ADD-PPVC thread is assigned with an originating resource for PVC setting(S5), and is assigned with a receiving resource by requesting the PVC setting to receiving PPCCF(S6), then requests a connection to a corresponding device(S7). Connection information is stored in a database, and an originating side is returned(S8). The system requests a connection setup to a GSMP(General Switch Management Protocol)(S9), and requests a PVC connection setup to an originating device(S10), then stores connected PVC connection setup information in another database(S11).
Patent KR-20020074081-A (KR)
Inventor: KUBOTA SYUJI
IPC: H04W84/04
Filed: 2002-03-15
Abstract: PURPOSE: A wireless communication system using user-owned access points is provided to construct a system with a wide service area capable of satisfying the actual needs of the users and reduce a burden on a communication service provider. CONSTITUTION: An public access point(2) is systematically set up by a manager of a control station(3). A user's personal access point(1) to be freely set up by a user at desired locations according to the needs of the user is accommodated by operating the control station(2). The user's personal access point(1) measures a utilization level of each user's personal access point(1), charges an owner of each user's personal access point(1) according to a measured utilization level, and sets up relay routes using the public access point(2) and the user's personal access point(1).
Patent KR-20030075226-A (KR)
Title: a signal lamp for pedestrian crossing having lighting device
Inventor: KIM DOO HWAN
IPC: G08G1/095
Filed: 2002-03-16
Abstract: PURPOSE: A traffic signal lamp for crosswalk including a lighting apparatus is provided to protect a pedestrian from the danger by throwing the light on the crosswalk in the night. CONSTITUTION: A traffic signal lamp for crosswalk including a lighting apparatus includes a signal lamp, a support(2), a main body(3), an extended arm(4), a lighting portion(5), a solar cell(6), a capacitor(7), and a sensor(8). The main body(3) is installed at an upper end portion of the support(2) to support the signal lamp. The lighting portion(5) is installed at one side of the main body(3) by means of the extended arm(4). The lighting portion(5) is connected to the signal lamp. The main body(3) is installed at the upper end portion of the support(2). The solar cell(6) is installed at an upper end of the main body(3). The capacitor(7) is installed in the inside of the main body(3). The sensor(8) is installed at one side of the main body(3) in order to sense the daytime and the nighttime.
Patent KR-20030075823-A (KR)
Title: The fabrication method of printed circuit board for semiconductor package having tailless pattern
Inventor: CHA SANG SEOK
IPC: H05K3/02
Filed: 2002-03-21
Abstract: PURPOSE: A method of fabricating a PCB(Printed Circuit Board) for semiconductor package having a tailless pattern is provided to reduce the electric noise due to a tail of a finger by forming necessary patterns without using a plating lead line. CONSTITUTION: A dry film is coated on both sides of a substrate including a copper layer. The first imaging process is performed to expose the copper layer by exposing and developing the substrate. The first etching process is performed to form a bonding finger by removing the exposed copper layer. The first strip process is performed to remove the dry film. The second imaging process is performed to expose the copper layer for forming the bonding finger, a circuit pattern, and a solder ball land by coating, exposing and developing the dry film. A nickel/gold plating process is performed to form a nickel/gold plating layer on the copper layer for forming the bonding finger, the circuit pattern, and the solder ball land. The second strip process is performed to remove the dry film. The second etching process is performed to remove the copper layer without the nickel/gold plating layer. A solder masking process is performed to form a plastic layer on the remaining region except for a soldering region.
Patent KR-20030077793-A (KR)
Inventor: CHOI KYUNG SOO
IPC: B01D53/32
Filed: 2002-03-27
Abstract: PURPOSE: Provided is a hazardous gas treatment apparatus using high temperature zone of plasma. CONSTITUTION: The apparatus comprises an anode member(70) having a reaction room therein, in which at least 1000°C of plasma is generated and hazardous gas is treated by the plasma, a cathode assembly(20) having an upper end outside of the reaction room and a lower end inside of the reaction room, wherein plasma is generated by direct current arc discharge between the lower end of the cathode assembly(20) and the anode member(70), a gas guide unit(40,50,60) surrounding a lower portion of the cathode assembly(20), and an upper portion and outer side surface of the anode member(70) and having a gas distributing room therein for distributing harmful gas around the anode member(70) before the hazardous gas is introduced into the reaction room, wherein the gas guide unit(40,50,60) has at least one plasma gas passage way, and the anode member(70) has a hazardous gas passage for introducing hazardous gas to the reaction room therethrough, a treated gas passage for exhausting treated gas, and a cooling water passage.
Patent KR-20030079478-A (KR)
Title: Retro reflective sheet
Inventor: HWANG GEON I
IPC: G02B5/12
Filed: 2002-04-04
Abstract: PURPOSE: A retroreflective sheet is provided to further improve the retroreflection and a luminescence effect by forming the retroreflection and the luminescence effect when the light beam does not exist. CONSTITUTION: A retroreflective sheet includes a resin film(30) with an excellent transparency, an adhesive layer(31), a glass bead layer(32), a reflection layer(33), and a luminescence layer(34). The adhesive layer(31) keeps an adhesive force between the resin film(30) and the luminescence layer(34). The glass bead layer(32) in the form of a fine bead is embedded into the adhesive layer(31) and the reflection layer(33) reflects the light beam transmitted from the glass bead layer(32). The luminescence layer(34) is provided with a self adhesive layer(35) and a base layer(36) for absorbing, storing and illuminating the light beam between the bottom surface of the reflection layer(33) and the glass bead layer(32).
Patent KR-20030080359-A (KR)
Title: Connector for motor of electronic control brake system
Inventor: LEE CHUNG JAE
IPC: B60T8/00
Filed: 2002-04-08
Abstract: PURPOSE: A power supply device of a motor for an electronic control brake system is provided to improve assembling efficiency, and to cut down manufacturing cost by preventing exposure of the motor power supply device with electrically connecting a male connector through the modulator block to a female connector in assembling the brake system. CONSTITUTION: A motor power supply device comprises a couple of female connectors(51a,51b) formed in a cover(25) of a housing(21) of a motor(20) opposed to a modulator block(10), and a couple of male connectors(52a,52b) electrically connected to a circuit board in a bottom of a case(31) and connected to the female connectors by penetrating the modulator block. Exposure of the motor power supply device is prevented by electrically connecting the male connectors to the female connectors through the modulator block when the electronic control brake system is combined.
Patent KR-20020079571-A (KR)
Title: Lock detection circuit
Inventor: HIRAI YOSHITAKA
IPC: H03L7/18
Filed: 2002-04-10
Abstract: PURPOSE: To provide a lock detection circuit that optimizes a lock detection time and an unlock detection time of a PLL circuit. CONSTITUTION: The lock detection circuit is provided with counters 21, 22 that respectively receive a feedback signal and a reference signal received by a phase comparator 11 of the PLL circuit 10 and counts the signals, a comparator circuit 23 that provides an output of an active state control signal when the count of the counter 22 indicates a 1st value while a count of the counter 21 depicts a 1st value, a counter 24 that counts the feedback signal when the control signal outputted from the comparator circuit 23 is active, and a discrimination circuit 25 that outputs an output signal with a value denoting a lock state when the count of the counter 24 reaches a 2nd value. The comparator circuit 23 resets the counter 24 when the count of the counter 22 indicates no 1st value while the count of the counter 21 depicts the 1st value.
Patent KR-20030082781-A (KR)
Title: Encapsulated organic light emitting device having thin film type getter layer and method for fabricating the same
Inventor: KIM HYEONG JUNG
IPC: H05B33/04
Filed: 2002-04-18
Abstract: PURPOSE: An encapsulated organic emitting device provided with a thin film-type getter layer and a manufacturing method thereof are provided to prevent the generation of a dark spot by blocking an inflow of oxygen and moisture from the outside into the inside of a device. CONSTITUTION: A light emitting layer(11) is formed on an upper portion of a light transmission substrate(10). A first encapsulating layer(12) covers the emitting light layer(11) and has a gas permeability. A getter layer(13) is formed on an upper portion of the first encapsulating layer(12) and absorbs gas. A gas impermeable second encapsulating layer(14) covers the getter layer(13). The emitting light layer(11) includes cathode and anode electrodes and an organic emitting layer provided between the electrodes.
Patent KR-20030038309-A (KR)
Title: The lamp having a sensor
Inventor: SHIN SANG TAE
IPC: H05B37/02
Filed: 2002-04-24
Abstract: PURPOSE: A sensor lamp is provided to be capable of reducing a dazzling phenomenon and a power consumption by making a sine wave current output to an output side when turning on a fluorescent lamp. CONSTITUTION: A power part(10) is supplied with a power having a predetermined voltage from the outer side. A sensing part(20) is supplied with a power from the power part(10) and senses the body of a human to judge a daytime and a night. An operation part(30) has a comparator(32) and a NAND gate(34) which are configured to output a specific value according to an output value output via the sensing part(20). A sine wave generating part(40) generates a sine wave according to an output value of the sensing part(20), and a fluorescent lamp(50) is connected to an output side of the sine wave generating part(40).
Patent KR-20030085744-A (KR)
Title: Multimedia message service apparatus and method for portable communication terminal
Inventor: KIM HYEON HO
IPC: H04W4/12
Filed: 2002-05-01
Abstract: PURPOSE: An MMS(Multimedia Message Service) system in a portable communication terminal and a method therefor are provided to transmit a message to notify a receiving-side terminal that there is a multimedia message to be received, so that the receiving-side terminal can access the web server of a personal computer corresponding to an address contained in the notification message and can receive the multimedia message. CONSTITUTION: An MMS environment consists of a personal computer(10), a transmitting terminal(20), and a receiving terminal(40). The personal computer(10) is composed of a multimedia message writing tool(13), a message cache(12), and a web server(14). The multimedia message writing tool(13) writes a multimedia message on the basis of a client's private information stored in a client relationship management/address book(11) and transfers a short message, containing the address of the personal computer(10) storing the multimedia message, to the transmitting terminal(20) through an SMS transmitting module(15). The message cache(12) stores the multimedia messages written by the multimedia message writing tool(13). The web server(14) reads a relevant multimedia message from the message cache(12) in response to an external terminal's multimedia message download request and transmits it through a mobile network(30). The transmitting terminal(20) transmits the short message, transferred through the SMS transmitting module(15), to the receiving terminal(40) through the mobile network(30). The receiving terminal(40) accesses the web server(14) of the personal computer(10), based on the address of the personal computer(10) contained in the received short message, and downloads the multimedia message.
Patent KR-20020085841-A (KR)
Inventor: HE LIN
IPC: C03C17/28
Filed: 2002-05-07
Abstract: PURPOSE: A method for temporarily protecting glass having at least one practically flat surface from glass chips and/or scratching and a product containing water-removable coating are provided, to allow the treated glass to have surface characteristic and chemical properties equal or similar to those of the untreated glass. CONSTITUTION: The method comprises the steps of applying an aqueous solution containing at least one polysaccharide on the flat surface of glass whose contact angle before applied to an aqueous solution is 8 degree or less; removing the water from the aqueous solution to allow a polysaccharide-containing coating having a thickness of minimum 0.01 micrometers to be left on the surface; and removing the polysaccharide-containing coating from the surface continuously by using an aqueous solution, wherein the surface has an contact angle of 8 degree or less after the polysaccharide-containing coating is removed from the surface continuously by using an aqueous solution. The product comprises a glass sheet having at least one practically flat surface, and a coating which is formed on the surface with a thickness of minimum 0.01 micrometers and comprises at least one polysaccharide.