baber/WOPTO huggingface dataset:
Patent KR-19990064136-A (KR)
Title: 기판에 트랜치 절연을 형성하는 방법
IPC: H01L21/763
Filed: 1996-10-02
Abstract: SOI 기판에 트랜치 절연을 형성하는 방법의 경우에, 제 1 산화막(112)이 SOI 기판을 포함한 일련의 층(100) 앞면에 증착되는데 상기 제 1 산화막은 후공정인 트랜치 형성을 위한 마스크를 정의하도록 형성된다. SOI 기판이 사용된다면, 상기 마스크를 사용하여, 트랜치(114)가 절연층(104) 아래로 식각된다. 또는 일정 깊이를 갖는 트랜치가 기판 속으로 식각된다. 각 트랜치는 산화물(116)로 채워진다. 폴리실리콘 층(124)는 산화물로 채워진 트랜치(114)와 제 1 산화막 위에 증착된다. 연이어, 폴리실리콘 커버가 산화물로 채워진 트랜치(114) 위에 남아 있는 식으로 상기 폴리실리콘 층이 제거된다. 마지막으로 제 1 산화물(112)이 제거된다.
Patent KR-20000005241-A (KR)
Title: Process for including a fine particulate filler into tissue paper using starch
Inventor: VINSON KENNETH DOUGLAS
IPC: D21H21/20
Filed: 1997-04-03
Abstract: PURPOSE: A strong, soft and a low dusting tissue web is provided to be used for manufacturing soft, absorbent sanitary products such as bath tissue, facial tissue, and absorbent towels. CONSTITUTION: A process for incorporating a fine particulate filler such as kaolin clay into tissue paper is disclosed. The process results in strong, soft, and low dusting tissue paper webs useful in the manufacture of soft, absorbent sanitary products such as bath tissue, facial tissue, and absorbent towels.
Patent KR-20000005340-A (KR)
Title: Programmable call processing system and method
Inventor: BUNCH JAMES L
IPC: H04Q3/545
Filed: 1997-04-08
Abstract: PURPOSE: A call processing system and method thereof provide easily by shortening a lead time. CONSTITUTION: The programmable call processing system (52) provides a standard call processing process (80) performing call processing according to industry standard call models, at least one database (84, 86) storing call processing data accessible by the set of standard call processing process (80), and at least one customized call logic program (92) for implementing extended subscriber features on the telecommunications switching system (10, 30). Further, an application program interface (56, 94) provides access by the at least one customized call logic program (92) to the at least one call processing database (84, 86) and further interrupting the standard call processing process (80) to execute the customized call logic program (92).
Patent KR-20000010760-A (KR)
Title: Gas condensing method
Inventor: RUMMELHOF KARL JORGEN
IPC: B63J99/00
Filed: 1997-05-06
Abstract: PURPOSE: A method for condensing the gas having a few fractions of an oil tanker while feeding oil is provided. CONSTITUTION: The device for condensing gas includes; a pipe(2) for transferring the gas including at least a few fractions to be condensed to a first heat exchanger(4); the first heat exchanger(4) including a first path(6) consisting of an inner space in a housing(8) of the heat exchanger(4); a pipe extended from the inner space and the like; and a cooling equipment(14) for accepting the refrigerant again through a return pipe(16) after feeding the refrigerant to a second path(10) of the first heat exchanger(4) through a feed pipe(12).
Patent KR-20000065266-A (KR)
IPC: C07K16/20
Filed: 1997-02-14
Abstract: Recombinant protein (I) includes: (a) a 19 kD C-terminal fragment (p19) of merozoite surface protein-1 (MSP-1) of a Plasmodium (other than P. vivax) infectious for mammals, particularly humans; p19 is normally anchored to the surface of the parasite at the end of penetration into an erythrocyte during an infection cycle; (b) a part of p19 that can induce an immune response able to inhibit parasitaemia in vivo; or (c) a peptide that can induce a cellular and/or humoral response equivalent to that produced by (a) or (b). (I) may include: (i) conformational epitopes that are unstable in a reducing environment; and (ii) most epitopes recognised by human antisera raised against the relevant Plasmodium species.
Patent KR-20000050396-A (KR)
Inventor: KIM HYEON CHEOL
IPC: H01L29/72
Filed: 1999-01-08
Abstract: PURPOSE: A method for manufacturing a trench-gate type power semiconductor device is provided to control damage by a bonding power, by eliminating the need to form a thick emitter electrode even if a great bonding power is given. CONSTITUTION: A method for manufacturing a trench-gate type power semiconductor device comprises seven steps. The first step is to sequentially form a drift region of a first conductivity and a base region of a second conductivity opposite to the first conductivity, on a semiconductor substrate used as a collector region. The second step is to form a trench so that the trench penetrates the base region in a vertical direction to contact a part of a upper portion of the drift region. The third step is to form a gate oxidation layer on an internal wall of the trench. The fourth step is to form a gate conductive layer on the gate oxidation layer to a predetermined height of the trench. The fifth step is to form a high density source region of a first conductivity along the trench side wall in the base region. The sixth step is to form an insulation layer by intervening an oxidation layer on the gate conductive layer to have the insulation layer buried into the trench. The seventh step is to form an emitter electrode and a collector electrode which are electrically connected to the emitter and collector regions respectively.
Patent KR-20000050494-A (KR)
Inventor: KIM BEOM CHEOL
IPC: G06K9/00
Filed: 1999-01-11
Abstract: PURPOSE: A system for recognizing an iris is provided to save time for detecting iris image, by decreasing user's denial feeling, and making compact with a front side of an optical imaging device making a sunken shape. CONSTITUTION: In a system for recognizing an iris having an optical imaging device, which comprises an inside supporting equipments for detecting iris image, an outside case fixing the inside case, and controller analyzing iris image, the inside case of the optical imaging device has a camera(17), an illuminator(16), and a distance measuring sensor(19). A front side of the case has a sunken shape. The illuminator(16) supplies light for being detected the iris image by the camera(17), regardless of neighboring brightness. The distance measuring sensor(19) measures distance to the iris.
Patent KR-20000051978-A (KR)
Inventor: LEE YOUNG WOONG
IPC: H04B7/216
Filed: 1999-01-28
Abstract: PURPOSE: A method of managing access channel with different slot-length is provided to supply the smooth service without conflicts between subscribers. CONSTITUTION: A method of managing access channel with different slot-length comprises the steps of: dividing access channel into several sub-channels by PN offset; controlling variably the length of message capsule of the above sub-channel used in transmitting the service with the subscriber demand.
Patent KR-20000054941-A (KR)
Inventor: SON HO GYU
IPC: G06F15/16
Filed: 1999-02-02
Abstract: PURPOSE: A system for managing a server through a shared memory between a micro controller and a compatible ISA bus of a personal computer is provided to rapidly read corresponding information whenever a main processor needs, by constantly updating information to a predetermined position of the shared memory after being executed a command sent from the main processor through the shared memory by the micro controller. CONSTITUTION: A server system having a computer and a compatible structure comprises a micro system management controller(micro SMC 201), a flash memory(202), a Shared SRAM(203), a real time clock(204), a shared memory access controller(SMAC 205), a flash controller(206), a ISA bus interfacing buffer(207), an input output advanced programmable interrupt controller(IOAPIC 209), a micro system managing controller interfacing buffer(208), a power fail interrupter(210), a system managing bus interrupter(211), and a serial port to internal debug bulkhead(212). The flash memory(202) stores programs operating in the micro SMC. The shared SPAM(203) supplies a data area simultaneously to be accessed by the micro SMC and a main processor. The real time clock(204) supplies date information to the micro SMC, and serves as a watchdog timer of the micro SMC. The SMAC(205) controls a shared memory to generate a signal controlling a buffer. The flash controller(206) resets the micro SMC to control an address coding. The ISA bus interfacing buffer(207) connects/ disconnects a bus. The IOAPIC(209) connects every interrupting signal generated in the system to the main processor. The power fail interrupter(210) generates the interrupting signals to the micro SMC if the power supplied to the system is wrongly operated. The system managing bus interrupter(211) generates the interrupting signals to the micro SMC if errors in slave device is generated. The serial port to internal debug bulkhead(212) supports conversational operations between the micro SMC and a user.
Patent KR-19990045891-A (KR)
Title: 초음파오존살균기
Filed: 1999-02-05
Abstract: 초음파오존살균기의 기술분야는 전기, 전자이고 생산되는 오존가스는 화학, 용도는 환경산업분야 이다. 
     발명의 목적은 생활환경이나 산업현장에서 지금까지 열이나 약품으로 살균 및 소독을 하던 것을 증기상태의 오존가스로 살균하는 방법을 개발하는 것이며, 이러한 기기의 발명에 구성은 오존가스를 생산하는 오존발생기 부분과 원료를 공급하는 공기주입부분, 오존가스를 물에 용해시키는 접촉기, 증기를 만드는 초음파진동장치 등이며 이들을 제어하는 전기적장치로 구성되어 있다. 
     발명의 효과는 그동안 열이나 약품으로 살균이나 소독을 하던 것을 오존의 특성을 이용한 오존가스로 살균함으로써 상온에서도 식품의 보관이나 신선도유지, 냉동식품의보관, 식품가공공장의 작업장에 살균이나 소독등으로 이용할 수가 있고 용해된 오존수로 곰팡이등을 살균할 수 있는 4계절 가습기로도 이용이 가능하다.
Patent KR-19990077652-A (KR)
Title: 신호기록재생장치및방법
IPC: G11B27/04
Filed: 1999-03-06
Abstract: 기록 매체(DISK)상에 신호를 기록하는 기록 및 상기 기록 매체(DISK)로부터 기록 신호를 재생하는 재생을 동시에 실행하는 신호 기록 재생 장치 및 그 방법에서, 기록 위치 및 재생 위치는 독립적으로 또한 임의로 설정된다. 기록 처리를 개시하기 위한 기록 매체(DISK)상의 기록 개시 위치 정보(P REC )를 기억하고, 재생 처리를 개시하기 위한 기록 매체(DISK)상의 재생 개시 위치 정보(P PB )를 기억하고, 상기 기록 개시 위치 정보(P REC )에 근거한 기록 처리 및 상기 재생 개시 위치 정보(P PB )에 근거한 재생 처리는 독립적으로 실행하여, 기록 개시 위치(P REC ) 및 재생 개시 위치(P REC )를 임의로 설정할 수 있는 신호 기록 재생 장치 및 그 방법을 실현한다.
Patent KR-19990078008-A (KR)
Title: 직조장치용드로잉기와그러한드로잉기를구비한직조기
IPC: D03C1/16
Filed: 1999-03-18
Abstract: 본 발명은 일단부에서 움직이지 않도록 되고 관통하도록 된 적어도 하나의 부품과, 록킹 연결 레버에 관절식으로 연결되고 그 일측에 배치되게 제공된 2개의 측판들을 포함하는 적어도 하나의 커넥터가 적어도 하나의 록킹 연결 레버에 연결되도록 제공된 평탄한 횡단면을 가진 적어도 하나의 관형 커넥팅 로드를 포함하며, 상기 커넥팅 로드의 단부에서 관통하도록 된 상기 부품은 2개의 사실상 평행한 핀들과 변형가능한 부품으로 형성되며, 핀들 각각은 2개의 측판들 사이에 배치되어 측판들의 대향된 면들에 접합된 제 1 단부를 구비하고, 상기 변형가능한 부품은 커넥팅 로드 내측에서 상기 핀들의 제 2 단부들의 간격을 조정하도록 구성된 것을 특징으로 하는, 직조기의 헤들 프레임(heddle frame)과 직조장치 사이에 설치되는 드로잉기(drawing mechanism)에 관한 것이다.
Patent KR-19990082772-A (KR)
Title: 멀티미디어단말장치및디지털신호처리방법
IPC: H04N21/426
Filed: 1999-03-26
Abstract: 본 발명은 방송 프로의 제공 매체에 관계 없이 목적으로 하는 방송 프로를 재생하여 출력하는 멀티미디어 단말 장치를 제공한다. 
     디지털 신호 처리 회로(30)는, 포맷이 다른 각종의 디지털 방송 신호를 처리하는 프로그램이 가능한 소위 디지털 시그널 프로세서이다.  사용자로부터의 선택 입력에 따라서, 목적으로 하는 디지털 신호를 처리하기 위한 프로그램을 호스트 CPU(52)가 ROM(54)으로부터 판독하여, 디지털 신호 처리 회로(30)에 공급한다.  이러한 프로그램에 따라서, 디지털 신호 처리 회로(30)는, 사용자의 선택 입력에 따라서, 트래픽 컨트롤러(20)로부터 출력되는 디지털 신호를 처리한다.
Patent KR-20000066933-A (KR)
Inventor: KIM YONG SIK
IPC: A61K36/69
Filed: 1999-04-22
Abstract: PURPOSE: A psychotropic polygalasaponin based compound is provided which inhibits a stereotyped behavior and climbing behavior which are induced by apomorphine. CONSTITUTION: A psychotropic polygalasaponin is represented by formula 1 representation. An extraction method are characterized by comprising the following steps: (i)after grinding Polygalae Radix up to 70-230 mesh, extracting three times with 3-5 fold amount of alcohol solution; (ii)evaporating and condensing the filtrate at 70-76 cm Hg and at 60-70°C; (iii)after suspending the condensate in distilled water of 10 fold volume ratio, shaking the above thing by adding alcohol solvent of 1-2 fold and extracting three times and separating alcohol layer; (iv)condensing the above alcohol solvent fraction at 70-76 cmHg and at 60-70°C and obtaining an extract; (v)after suspending the above extract with distilled water of 50-100 fold adsorbing in resin HP-20 and draining active material with 70% methanol and condensing for obtaining an extract; (vi)after condensing the above extract with distilled water of 50-100 fold 2-3 times in common ratio, suspending homogeneously with same amount of distilled water and freeze-drying for obtaining a powder extract; (vii)dissolving the powder extract in ether and obtaining a precipitate;(viii)after saturating the precipitate with distilled water, passing through HP-20 resin and eluting an active site with methanol and adsorbing in silica gel and eluting active material by using ethyl acetate/methanol/water; (ix)adsorbing the active material in silica gel again and fractionating with mixed solvent of trichloro methane/methanol/ethanol/10%-acetic acid.
Patent KR-20000067127-A (KR)
Inventor: LEE DONG HO
IPC: C08L23/04
Filed: 1999-04-23
Abstract: PURPOSE: Provided is a polyolefin-based fire retardant material composition for a cable insulation or sheath, which has low noxiousness and low smoke emission. CONSTITUTION: The fire retardant material composition comprises 100 pts.wt. of polyolefin-based resin such as polypropylene, high density polyethylene, middle density polyethylene, etc., 60-150 pts.wt. of an inorganic fire retardant of which surface is treated by a compound such as aluminum hydroxide, calcium carbonate, oleic acid, vinyl trimethoxy silane, phosphate, etc., wherein the inorganic fire retardant has a particle size of 0.5-30micrometers and a specific surface area(BET) of 3-20 mm2/g, 0.5-30 pts.wt. of a fire retardant auxiliary such as tricresyl phosphate, zinc oxide, silica, carbon black, etc., 0.5-20 pts.wt. of a polymer binder such as maleic anhydride, acrylic acid, linear low density polyethylene, ethylene-ethyl acrylate, etc., and 0.5-6 pts.wt. of an antioxidant comprising an amino-ketone and a benzimidazole.
Patent KR-19990083628-A (KR)
Title: 집적회로의파라미트라이징방법및그집적회로
IPC: H01L21/82
Filed: 1999-04-30
Abstract: 집적 회로의 공급 전압 단자 및/또는 출력 단자에 디지탈 시작 명령 신호(digital start command signal)와 뒤이어 파라미트라이제이션 데이타 신호를 인가시킴으로써 집적 회로를 파라미트라이징하기 위한 방법을 제공한다.  파라미트라이제이션 프로세스 동안, 공급 전압 단자 및/또는 집적 회로의 출력 단자에 인가되는 전압 레벨은 정상 동작 전압 레벨 이상으로 유지되고 집적 회로 내에 구비된 검출기에 의해 검출된다.  상기 집적 회로는 공급 전압 단자, 기준 전위 단자, 및 출력 단자 뿐아니라 바람직하게는 비휘발성인 내부 메모리를 포함한다.  집적 회로를 파라미트라이징하기 위한 조정 사양(adjustment specification)은 상기 메모리 내에 저장되고 파라미트라이제이션 데이타 신호에 의해 동작된다.
Patent KR-20000074155-A (KR)
Inventor: KIM MYEONG SIK
IPC: G10L19/00
Filed: 1999-05-18
Abstract: PURPOSE: A method of generating address according to a ROM capacity of a MPEG subband synthesizing filter is to reduce a number of IMDCT(inverse modified discrete cosine transform) coefficient to be stored using a symmetry of the coefficient, thereby minimizing a scale of the ROM. CONSTITUTION: A method of generating address according to a ROM capacity of a MPEG subband synthesizing filter comprises the steps of: setting the ROM capacity to 80 bytes when a number of IMDCT is set to 32 considering a symmetry of the IMDCT coefficient; detecting a range of an address for reading the coefficient, and reducing the address from 64 to generate an address for the ROM having a predetermined capacity, if the address is included in a range between 32 to 64, and reading a data from the generated ROM address and inverting the data and then setting the data as the IMDCT coefficient; if the address is included in a range between 64 to 96, reducing the address from 96 to generate the address for the ROM, and reading a data from the generated ROM address and then setting the data as the IMDCT coefficient; and if the address is included in a range between 96 to 128, reducing the address from 128 to generate the address for the ROM, and reading a data from the generated ROM address and then setting the data as the IMDCT coefficient.
Patent KR-19990088447-A (KR)
Title: 모듈러열팽창밸브및카트리지
IPC: F16K31/68
Filed: 1999-05-20
Abstract: 순환 시스템내의 냉각제의 흐름을 제어하는데 사용하기 위한 개선된 열 응답성 팽창 밸브는 유체 충전 격판 캡슐을 갖는 카트리지 서브어셈블리, 작동 로드 메카니즘, 밸브 시트 및 포획된 밸브 밀폐 장치를 갖는다.  밸브 시트를 갖는 관형 신장부는 캡슐상에 조정 가능하게 홈이 파여진다.  카트리지 서브어셈블리는 밸브 본체내의 블라인드 보어에 설치하기 전에 열적으로 미리 보정될 수 있다.  보정하는 동안, 관형 신장부는 보정 온도에서 밸브 시트로부터 원하는 밀폐 장치 이동을 제공하기 위해 격판 및 작동 로드 메카니즘을 조정하도록 회전된다.
Patent KR-20010001725-A (KR)
Inventor: LIM BEOP SEON
IPC: H04N7/08
Filed: 1999-06-08
Abstract: PURPOSE: A method for controlling displays of caption graphic signals is provided to newly generate a display control code according to a user's selection, and to control a display specification of a caption signal. CONSTITUTION: Each control code according to a display specification of a caption broadcasting signal is tabled and stored(S201). A controller decides whether caption data added to a video signal is detected(S202). If a caption signal is detected, the controller separates a character code from a control code included in the caption data, and stores the separated character code and the control code in a data buffer and a control code buffer, respectively(S203). The controller decides whether a user inputs a command by a control method changing key button(S204). If so, the controller displays a control method selecting menu for selecting a display specification of the caption signal by the user(S205). The user selects a character/background color, a location, an attribute, and a display method by using a key button, through a displayed control method selecting menu screen(S206). The controller rejects an input relating to a control code outputted from the control code buffer(S207). The controller reads a control code corresponding to the display specification selected by the user from a control code table memory(S208). The controller controls a display memory and a character signal generator with the read control code, and makes the caption signal displayed with the selected display specification(S209). If the command by the control method changing key button is not inputted, the controller controls the display memory and the character signal generator with the control code, and makes the caption signal displayed with a display specification transmitted from a broadcasting station(S210).
Patent KR-20010001839-A (KR)
Inventor: CHO JEONG SIK
IPC: G01C21/00
Filed: 1999-06-09
Abstract: PURPOSE: A navigator system for a vehicle is provided to conveniently provide active and reliable road information to guide a driver for each road situation by newly setting an optimum travelling path nearest to a real travelling situation. CONSTITUTION: A navigator system for a vehicle includes a digital map part(10) for storing digital road information displayed on a map, a GPS(Global Positioning Satellite) receiver(20) for receiving a GPS signal transmitted from a GPS satellite via a GPS antenna(21) to output position information, a position information part(30) for outputting position amending information for amending a current travelling path and a current position of a vehicle according to output signals from a gyro sensor(31) and a speed sensor(32) when the position information signal is not received in the GPS receiver, a road sign recognizing part(40) for recognizing a road sign photographed by a CCD camera(41) for outputting image information of the recognized road sign, and an arithmetic controller(50) for synthesizing all information from the above parts and newly set an optimum travelling path according to a real road situation even though real road information is different from the digital map information to inform a driver of the optimum path via a speaker(51) or a monitor(52).
Patent KR-20010002097-A (KR)
Inventor: KIM JUN HYEON
IPC: G06T1/00
Filed: 1999-06-11
Abstract: PURPOSE: A method and a device for photographing and recognizing a face based upon an automatic tracking of a skin color and a movement is provided to accurately photograph and recognize a face image by tracking a movement of a subject, and further previously caution against a dangerous man by judging a state of the face image. CONSTITUTION: An initial analyzing part(31) selects a position of a face by extracting the face portion from a picture signal of a camera. A judging part(32) selects a pursued target based upon a comparison between the extracted outline of the face and a predetermined face template. An object supervising part(33) outputs a value for controlling a camera position so as to track a movement of the pursued target. A pan/tilt and zoom controlling part(34) generates a pan/tilt and zoom controlling signal for moving the position of the camera according to the inputted value. A face image storing and transferring part(35) stores the face image captured by the camera and transfers the image to a display device. A face recognizing and searching part(36) recognizes and search for the stored face image.
Patent KR-20010003543-A (KR)
Inventor: HONG YUN GI
IPC: B41J29/00
Filed: 1999-06-24
Abstract: PURPOSE: A machine combined with a scanner and a printer is provided to easily exchange expendable supplies and parts of a printer unit by adapting a scanning unit as a cover of the printer unit. CONSTITUTION: A machine combined with a scanner and a printer includes a printer unit(10) including a feeding die(11) loading papers, a pick up roller(12) picking up the papers of the feeding die, a feeding roller(13) feeding the paper from the pick up roller, a carriage(14) receiving an ink cartridge reciprocatively moving to perform printing on the fed papers from the feeding roller, and a drawing roller(15) drawing off the printed papers; and a scanner unit(20) scanning data of the fed document, wherein the scanner unit is installed in the upper surface of the printer unit to be opened and shut for performing a cover function of the printer unit.
Patent KR-20010003583-A (KR)
Title: Surface acoustic wave device
Inventor: LEE MAN HYEONG
IPC: H03H9/25
Filed: 1999-06-24
Abstract: PURPOSE: A surface acoustic wave device is provided to achieve an improved insertion loss characteristic, riffle characteristics of amplitude and phase, and attenuation characteristic within a stop band. CONSTITUTION: A device comprises a substrate; two or more unit surface acoustic wave filters(10) spaced apart from each other and disposed onto the substrate; and a sound absorbing film(30) disposed at the substrate between the unit surface acoustic wave filters and which absorbs an acoustic wave leaked from the inner both ends of the unit surface acoustic wave filter, so as to reduce mutual interference of the acoustic wave. The sound absorbing film is made up of a non-conductive rubber material such as a silicon rubber or a silicon ink. Since the sound absorbing film with a viscosity is disposed between the filters arranged on the substrate, the surface acoustic wave leaked from both ends of the opposed filters is absorbed by a viscous flow of the sound absorbing film.
Patent KR-20000011711-A (KR)
Inventor: DANABEGOZI
IPC: H05B33/28
Filed: 1999-07-14
Abstract: PURPOSE: The device comprises many kinds of luminescence color and makes plural luminescence colors without brightness speckles and has a low cost. CONSTITUTION: The EL device is formed by forming plural luminous bodies(13A, 13B) made of a high dielectric resin in turn, and by printing and forming an electrode layer(14) on the final luminous body. A color conversion layer(27) of stripe shape is formed in a position facing to one side of a light transparent electrode layer(22) composed by 2 thin lines of comb pattern by facing a back electrode layer(25) with the light transparent electrode layer by intervening a luminous body layer(23) on the front using one color luminous body. An AC voltage is applied between the back electrode layer and two light transparent electrode layers.
Patent KR-20000011861-A (KR)
Title: Dust filter bag
Inventor: SCHULOR ULICH
IPC: A47L9/14
Filed: 1999-07-21
Abstract: PURPOSE: A dust filter bag provides a high filtering effecting, that is, high separating effect. CONSTITUTION: The dust filter bag comprises fiber layers(4)(5) laminated with a paper layer(2). The fiber layers(4)(5) are composed of a synthetic polymer fiber and arranged on a purifying gas side(3) of the paper layer(2). The dust filter bag includes a polymer region(9) formed from a melt of the fiber layers(4)(5) and having a welding area of 0.5 to 10 percents of the surface. The polymer region(9) is self-hardened and combined with the paper layer(2). The length and/or width of the polymer region(9) are increased by at least 1 millimeter. The polymer region(9) has a smaller thickness than the overlying paper layer(2) and the underlying fiber layers(4)(5), especially than the paper layer(2) located in the outside of the polymer region(9).