baber/WOPTO huggingface dataset:
Patent KR-20040055442-A (KR)
Inventor: KIM SU HYEON
IPC: C12Q1/68
Filed: 2002-12-21
Abstract: PURPOSE: Nucleic acid microarray reproduced by using polymerization reaction and a manufacturing method thereof are provided, thereby simply and cheaply manufacturing the nucleic acid microarray at one time, and manufacturing a plurality of nucleic acid microarrays from one original nucleic acid microarray. CONSTITUTION: The nucleic acid microarray comprises a substrate; and nucleic acid fragments having the nucleotide sequence complementary with the nucleic acid on the original nucleic acid microarray and containing polymerization reaction group and polymerizable monomer in the 3'-terminal, 5'-terminal or within the nucleic acid fragments by covalent bond, maintaining the spatial arrangement and mirror image symmetric arrangement of nucleic acid having the complementary nucleotide sequence on the original nucleic acid microarray, wherein the polymerization reaction group and polymerizable monomer has ethylene group. The method for manufacturing the reproduced nucleic acid microarray comprises the steps of: (1) constructing the original nucleic acid microarray with nucleic acid having the nucleotide sequence complementary with the nucleic acid microarray to be manufactured and having the sequence according to the position on a plane; (2) dipping the original nucleic acid microarray in a solution containing the nucleic acid fragments to be desired; (3) washing the nano particle bound original nucleic acid microarray; (4) filling a space between the polymer bound original nucleic acid microarray and a substrate with a solution containing the polymerization reaction group and polymerizable monomer; and (5) separating the polymer bound substrate from the original nucleic acid microarray.
Patent KR-20040055946-A (KR)
Title: Joint portion for connecting deck plates
Inventor: KIM MU SU
IPC: E04B5/40
Filed: 2002-12-23
Abstract: PURPOSE: A deck plate joint is provided to improve support strength by advancing connection condition, to prevent the leakage of concrete paste and to simplify a connection work for deck plates. CONSTITUTION: The deck plate joint(100) contains: a primary joint end(110) projected upward from the end of a deck plate; a secondary joint end(120) projected upward from the end of another deck plate to contact with the primary joint end(110) in a face; and a cogged end(130) formed in the shape of a hook and extended to be folded downward in an acute angle from the secondary joint end(120) to make the primary joint end(110) contacted/fixed with the secondary joint end(120).
Patent KR-20040057400-A (KR)
Title: artificial nail clipper
Inventor: CHANG SUNG YONG
IPC: A45D29/02
Filed: 2002-12-26
Abstract: PURPOSE: An artificial nail clipper is provided to cut an artificial nail without affecting both edges of an artificial nail attached to a real nail. CONSTITUTION: The artificial nail clipper comprises: a lower member(10); a lower flange(11) extending upward from the front end of the lower member(10); a lower blade(13) of a convex arc shape formed on the free end of the lower flange(11); an upper member(20); an upper flange(21) extending downward from the front end of the upper member(20); a lower blade(23) of a concave arc shape formed on the free end of the upper flange(21); joining elements(30) joining tail ends of the lower member(10) and upper member(20); a lever(40) arranged on the top surface of the upper member(10); a guide member(50) slidably supporting the lever(40), upper member(10) and lower member(20); and a projecting portion disposed in the lever(40) near the guide member(50) and for applying a load on the top surface of the upper member(20), wherein the lower blade(23) and the upper blade(13) are engaged each other toward the top and bottom surfaces of an artificial nail to thus perform cutting.
Patent KR-20040060054-A (KR)
Title: Apparatus for upholding walking beam of reheating furnace in hot rolling process
Inventor: LEE JAE GYU
IPC: B21B39/02
Filed: 2002-12-30
Abstract: PURPOSE: A hydraulic walking beam upholding apparatus using combination of hydraulic cylinder and idle roller for forming various supporting points is provided to transfer slab in hot rolling reheating furnace more smoothly and prevent damage of parts due to load concentration. CONSTITUTION: The apparatus comprises a driving wheel(110) which is installed on an upper part of vertical hydraulic cylinder(140) to rotate bearing, and on an upper part of which walking beam(80) is rested so that the vertical hydraulic cylinder is moved up and down and traveled; and a guide(130) which is guided when a part of the driving wheel is lifted and lowered around the hydraulic cylinder, and which endures a horizontal load when the driving wheel is driven forward and backward, wherein high pressure is supplied to head of the hydraulic cylinder when transferring the slab with being putting on a moving beam, supply of hydraulic pressure is stopped when moving the slab back and forth, the slab is transferred by rotationally driving the driving wheel, and relief pressure of low pressure is applied to the apparatus so that the apparatus is operated when the slab is put on a fixed beam.
Patent KR-20040060588-A (KR)
Title: Fabricating method of liquid crystal display panel and seal pattern forming device thereof
Inventor: JUNG YO HAN
IPC: G02F1/1333
Filed: 2002-12-30
Abstract: PURPOSE: A method of manufacturing liquid crystal panels and a seal pattern forming device used therefor are provided to fabricate liquid crystal panels having mutually different sizes on a large motherboard, and to form a seal pattern by arranging mutually different printing units on each liquid crystal panel of mutually different sizes through an in-line system, thereby maximizing use efficiency of the motherboard. CONSTITUTION: A motherboard(300) divided into a large panel area and a small panel area is provided. At least one first image display portion(310a,310b,310c) is formed in the large panel area of the motherboard(300). At least one second image display portion(320) is formed in the small panel area of the motherboard(300). At least one first seal pattern(530a,530b,530c) is formed at an outer periphery of the first image display portion(310a,310b,310c) through a seal dispenser method. At least one second seal pattern is formed at an outer periphery of the second image display portion(320) through a screen mask method. The large panel area is wider than the small panel area.
Patent KR-20020042798-A (KR)
IPC: G01F1/696
Filed: 2000-06-20
Abstract: 질량 흐름 제어기에 질량 유량에 비례하는 출력 전압을 제공하고 가스의 질량 유량을 감지 및 측정하기 위한 개량된 질량 흐름 센서 인터페이스("MFSI";mass flow sensor interface) 회로 및 그 방법이 개시되었다.  본 발명의 개량된 MFSI 회로는 회로를 구동시키기 위해 업스트림 및 다운스트림 질량 흐름 감지 엘리먼트와 정밀한 전류원을 포함한다.  이 회로는 또한 업스트림 질량 흐름 감지 엘리먼트의 전압 업스트림과 다운스트림 질량 흐름 감지 엘리먼트의 전압 다운스트림을 합하기 위한 연산 증폭기를 포함한다.  기준 전압은 연산 증폭기의 포지티브 노드에 전기적으로 연결된다.  업스트림 션팅 레지스터와 다운스트림 션팅 레지스터는 연산 증폭기의 네거티브 노드에서 공통 접속부를 공유하고 업스트림 및 다운스트림 질량 흐름 감지 엘리먼트에 병렬로 전기적으로 연결된다.  본 발명의 개량된 MFSI 회로는 또한 연산 증폭기의 포지티브 노드와 기준 전압원 사이에 연결된 기준 레지스터와 연산 증폭기의 출력과 포지티브 노드 사이에 연결된 피드백 레지스터를 포함한다.  MFSI 회로의 연산 증폭기는 업스트림 및 다운스트림 질량 흐름 감지 엘리먼트에 걸친 저항 변화에 비례하는, 따라서 가스 질량 유량에 비례하는, 출력신호를 제공한다.
Patent KR-20020026540-A (KR)
IPC: C23C16/455
Filed: 2000-07-14
Abstract: 가스 소모성 프로세스 유닛(38), 예컨대 반도체 제조 툴(38)에 가스를 분배하기 위한 자동 스위칭 부압 가스 전달 시스템(10)에 관한 것이다.
Patent KR-20020015719-A (KR)
Inventor: AUER HEINZ
IPC: B01J3/02
Filed: 2000-07-26
Abstract: A description is given of a process for preparing methyl formate by reacting excess methanol with carbon monoxide under superatmospheric pressure and at elevated temperature in the presence of alkali metal methoxide or alkaline earth metal methoxide as catalyst in a pressure-rated reactor, in which the use of at least two reactor elements, preferably operated in countercurrent, at about 100° C. and a pressure of about 100 bar in combination with a solids-free desalting of the reaction product makes possible very economical, largely trouble-free production of methyl formate in any desired quality and with a very good production capacity. Furthermore, the process for solids-free desalting and apparatuses for carrying out this process are described.
Patent KR-20020031186-A (KR)
IPC: H03G5/16
Filed: 2001-07-03
Abstract: 오디오 신호들의 청감각을 향상시키기 위해, 오디오 재생 시스템들에서 대역폭 확장 장치들의 사용하는 것이 공지되어 있다. 이로써 원래의 입력 신호보다 낮은 신호 부분을 포함하는 오디오 신호에 낮은 음조 신호를 부가하는 것이 가능하다. 본 발명은 얻어진 부-고조파들과 동일한 지연을 얻기 위해 처리되지 않은 신호 부분을 지연시킴으로써 재생된 오디오 신호에서의 인위적 산물들을 극복하기 위해 공지된 장치들의 향상을 제공한다.
Patent KR-20020065583-A (KR)
Title: 압력 센서 모듈
IPC: G01L9/00
Filed: 2001-10-19
Abstract: 압력차를 측정하기 위한 선행 기술에 따른 압력 센서 모듈은 박막 균열시 적어도 일시적으로 서로 다른 압력이 지배하는 두 개의 공급 라인이 서로 연결되도는 것을 방지하기 위해  예를 들어 오일과 같은 또다른 금속성 박막 및 다른 작동 수단을 구비한다. 
     본 발명에 따른 압력 센서 모듈(1)은 공급 라인에 간단한 밸브(15)를 구비하고, 상기 밸브는 센서의 박막이 균열되었을 때, 다른 부가의 작동 수단 없이 두 개의 공급 라인이 서로 연결되는 것을 방지한다.
Patent KR-20020064946-A (KR)
IPC: H04Q9/00
Filed: 2000-12-13
Abstract: 본 발명에 따른 방법, 장치 및 시스템은 대화형의 디스플레이 메뉴 프롬프트 또는 음성 프롬프트를 텔레비전과 같은 제1의 동기화된 원격 제어 가능 전기 제품내에 제공함으로써 사용자가 통합 원격 제어 송신기 디바이스를 프로그래밍할 수 있도록 하여, 사용자가 원하는 유형, 브랜드 및 모델의 추가의 상이한 전기 제품을 제어하도록 통합 원격 제어 송신기 디바이스를 쉽게 프로그래밍하도록 할 수 있다.
Patent KR-20020089315-A (KR)
Title: Three dimensional format biochips
IPC: G01N33/543
Filed: 2001-10-26
Abstract: A biochip is formed with a plurality of optically clear hydrogel cells attached to the top surface of a solid substrate in the form of an array. Each of the cells is formed of a hydrogel of polyethylene glycol, polypropylene glycol or a copolymer thereof having reactive isocyanate groups. Nonhybridization binding entities are immobilized in these cells, which entities are effective to selectively sequester a target protein or other comparable biomolecule. Different binding entities are immobilized in different cells to create a biochip that can be used to assay for a number of target biomolecules.
Patent KR-20020063277-A (KR)
IPC: A01N43/713
Filed: 2000-11-11
Abstract: 본 발명은 다음 화학식(I)의 신규한 피롤 유도체에 관한다: 
     [화학식 I] 
     
       
     
     [식중, X는 산소 또는 황이고; R 1 은 수소, 치환되거나 치환되지 않은 C 1 -C 4 -알킬 또는 할로겐이며; R 2 는 치환되거나 치환되지 않은 C 1 -C 4 -알킬이고; A는 오르토치환된 아릴; 오르토치환된 헤테로아릴; 치환되거나 치환되지 않은 이환식 아릴; 또는 치환되거나 치환되지 않은 이환식 헤테로아릴임. 
     신규한 화합물은 식물-보호 특성을 가지며 식물병리학적 미생물에 의한 감염에 대하여 식물을 보호하는데 적당하다.
Patent KR-20030005349-A (KR)
IPC: G11B27/30
Filed: 2002-03-15
Abstract: 본 발명은, 광 디스크(5)에 대하여 워블링시킨 그루브를 형성함으로써, 어드레스 정보를 기록하는 방법에 관한 것이며, 단계 S1에서, 동기 신호, 어드레스 데이터, 및 어드레스 데이터의 에러 정정 부호로 이루어지는 어드레스 정보가 발생된다.  단계 S2에서, 캐리어 신호에 어드레스 정보가 승산되어 위상 변조 신호가 생성된다.  단계 S3에서, 스파이럴 형상으로, 또한 위상 변조 신호에 따라 워블링시킨 그루브가 광 디스크(5)에 형성된다.
Patent KR-20030011337-A (KR)
IPC: H02M3/337
Filed: 2002-03-22
Abstract: 제 1 스테이지에 변압기(18)의 1차 측과 제 2 스테이지에서 변압기의 2차 측을 구비하는 2 스테이지에 스위칭 전원 장치가 제공된다. 상기 제 1 스테이지(Stage 1)는 정류기(14)의 입력단에 연결되는 EMI 필터(12)를 포함한다. 전원(10)으로부터 격리하기 위해 변압기(18)의 1차 측의 개방 루프에서 동작하는 자체 발진, 하프-브리지(half-bridge), 공진 인버터(16)에 상기 정류기의 출력단이 연결된다. 정방향(feed-forward) 제어가, 입력 전압 변동과 비교하여 매우 작은 출력 전압 변동을 제공하며, 라인 변동(line variation)을 보상하는 데에 사용된다. 상기 제 2 스테이지(Stage 2)에서, 변압기(18)의 2차 측은, 감지된 전류와 원하는 값 사이의 차이를 나타내는 에러 신호를 사용하여, 출력 전류를 조절하기 위한 PWM 제어 회로(34)를 포함하는 포스트 조절 회로(20)에 입력을 제공한다.
Patent KR-20030019434-A (KR)
IPC: A61P9/00
Filed: 2000-06-16
Abstract: 무독성이고 제약상 허용가능한 유효량의 화합물 I과 같은 PPARγ아고니스트 또는 그의 제약상 허용가능한 유도체의 투여를 포함하는, 인간 또는 인간 이외의 포유동물에서 심장 인슐린 내성 또는 심장 인슐린 내성 관련 증상의 치료 또는 예방법.  심장 인슐린 내성 관련 증상은 미소혈관계 협심증, 아테롬성동맥경화증 및 울혈성심부전이다.  화합물은 로시클리타존, 트로글리타존, 엔글리타존 및 피로글리타존을 포함한다.
Patent KR-20040062811-A (KR)
Inventor: NA HO GWON
IPC: G11B19/02
Filed: 2003-01-03
Abstract: PURPOSE: A method for automatically switching an optical disk video display is provided to output a play-ready signal to a connection apparatus such as a TV set, and to automatically switch into an outer input mode according to the play ready signal in the connection apparatus, thereby automatically displaying videos played from an optical disk. CONSTITUTION: When a DVD is inserted(S10), a microcomputer reads navigation information to perform a series of downloading processes(S11). If disk menu information recorded in a specific recording position of the DVD is read(S13), the microcomputer generates a play-ready signal to transmit the play ready signal to a television(S14). The microcomputer generates a disk menu video relative to the disk menu information, and transmits the generated disk menu video to the television(S15). If a user selects a desired menu, the microcomputer decides that a play operation relative to the menu is requested(S16). The microcomputer carries out a series of play operations(S17).
Patent KR-20040063334-A (KR)
Inventor: CHO BYEONG HUI
IPC: H01L29/788
Filed: 2003-01-07
Abstract: PURPOSE: A method for forming a gate oxide layer of a semiconductor device is provided to control a variation of a threshold voltage by reducing the quantity of charge trap generated by a current flow inside a gate oxide layer in a program/erase operation of a NAND flash memory cell while using a barrier layer formed in both directions due to reaction of an oxide and nitrogen. CONSTITUTION: A gate oxide layer(20) and a polysilicon layer(30) are sequentially formed on a semiconductor substrate(10). A nitrogen ion implantation process is performed. By performing a heat treatment process, a barrier layer formed by a combination of an oxide and nitrogen is formed between the semiconductor substrate and the gate oxide layer and between the semiconductor substrate and the polysilicon layer. A nitride layer(40) is formed on the polysilicon layer.
Patent KR-20040063342-A (KR)
Inventor: KIM YOUNG HO
IPC: F28F1/10
Filed: 2003-01-07
Abstract: PURPOSE: A heat exchanger for a condenser is provided to improve the capability of supporting a refrigerant, improve the heat exchange efficiency by increasing a contact area between refrigerant tubes and heat transfer fins and efficiently transmitting cold air, and improve the cooling efficiency. CONSTITUTION: A ventilating fan(10) is installed in the center of a cylindrical coil assembly(20). A plurality of ring-shaped refrigerant tubes are arranged in parallel to insert plate type heat transfer fins into the plurality of ring-shaped refrigerant tubes at equal gaps. Both ends of the ring-shaped refrigerant tubes are connected by connecting pipes to communicate the ring-shaped refrigerant tubes with each other. The coil assembly is installed inside a frame(2).
Patent KR-20040064004-A (KR)
Title: A use of amnion as a substrate or basement membrane for cell culture, the method for preparing them and the use thereof
Inventor: JANG HYEON MI
IPC: A61K35/50
Filed: 2003-01-07
Abstract: PURPOSE: Provided is a cell treatment which treats burns with excellent physical strength and burn care facilitating efficiency of the amnion itself, and is effectively used in making and developing artificial organs based on various tissue engineering techniques. CONSTITUTION: A method of manufacturing the cell treatment comprises the steps of: treating the amnion such that the basement membrane thereof is preserved; removing the epithelium of the amnion; cross-linking it or coating it with collagen or bioactive factor; and culturing cells at the treated amnion. In this way, various cells are cultured using the biocompatible amnion separated from the placenta as a cell culturing matrix.
Patent KR-20040064931-A (KR)
Inventor: KIM JONG SU
IPC: B60H1/00
Filed: 2003-01-11
Abstract: PURPOSE: A structure for reducing a leakage of a cylindrical door for a vehicle air conditioner is provided to reduce the production cost and improve the assembly of a cylindrical door and a case by removing a seal structure. CONSTITUTION: A cylindrical door(15) has a circular protrusion(15a) at both side walls. A case(14) has a circular groove(14a) for receiving the circular protrusion. A part of air supplied by a ventilator proceeds to a gap between an inner surface of the case and the both side walls of the cylindrical door. At this time, the air is interrupted by the circular protrusion and the circular groove which are combined with each other, thereby reducing a leakage of the air through the gap.
Patent KR-20040066354-A (KR)
Title: Locking system of loading room for cargo vehicle
Inventor: NOH JI YEON
IPC: B60P1/26
Filed: 2003-01-17
Abstract: PURPOSE: A tray-locking device of a freight vehicle is provided to conveniently facilitate an open-and-close operation of a rear deck by opening and closing the rear deck in one-touch method by mounting the locking device in the center of the rear deck. CONSTITUTION: A device for locking a rear deck(21) of a freight vehicle is composed of the rear deck movably combined with the lower side of a tray of the freight vehicle by a hinge(23); a locking member(27) positioned in the center of the rear deck to rotate around a central shaft; a link bar(29) of which one end is combined to both left and right ends of the locking member by a pin, arranged at both sides of the locking member; a sliding member(31) of which one end is rotatively combined to the other end of the link bar and moving left and right according to the rotation of the locking member; a guide unit disposed to the rear deck with holding the movable direction of the sliding member; and a side deck(35) including a locking hole inserted with an outer end of the sliding member when the sliding member moves outward.
Patent KR-20040067577-A (KR)
Inventor: PARK JONG NAM
IPC: G11B19/12
Filed: 2003-01-24
Abstract: PURPOSE: A method for deciding a DVDRAM disk of a disk drive, and a device therefor are provided to decide a DVDRAM disk by using a disk reflection signal in a disk decision mode of a disk drive, thereby exactly deciding the DVDRAM disk even though the DVDRAM disk does not use a cartridge. CONSTITUTION: A system decides whether a disk drive is in DVD-series disk decision mode(410). If so, the system turns on a focus control function, and moves a pickup to an inner circumference(420). The system detects the number of headers per unit rotation on the disk inner circumference(430). The system compares a threshold value with the number of the detected headers(440). If the number of the detected headers exceeds the threshold value, the system decides a loaded disk as a DVDRAM disk, and determines parameter values related to the disk according to a specification of the DVDRAM disk(450,460).
Patent KR-20030022228-A (KR)
Title: Method of preventing bending of soi layer and semiconductor device formed by the same
Inventor: AHN DONG HO
IPC: H01L27/12
Filed: 2003-02-14
Abstract: PURPOSE: A method of preventing bending of an SOI layer is provided to prevent oxygen from being diffused through an interface between the SOI layer and a buried silicon oxide layer by forming a nitrogen-containing layer on at least a part of the interface or by stacking amorphous silicon on an isolation trench and changing the amorphous silicon through a solid phase epitaxial growth method. CONSTITUTION: An SOI substrate is prepared which includes a lower silicon layer(110), the buried silicon oxide layer(111), the SOI layer and the nitrogen-containing layer between the buried silicon oxide layer and the SOI layer. The SOI layer of the SOI substrate is etched to form the isolation trench.
Patent KR-20040073235-A (KR)
Inventor: PARK KI SOUNG
IPC: E04B1/86
Filed: 2003-02-14
Abstract: PURPOSE: Joining structure of a soundproof plate and a soundproof rod, making use of fixing frames is provided to improve work efficiency in construction work and replacement work and to prevent particles of a sound-absorbing member from being diffused in the air. CONSTITUTION: In joining structure of a soundproof plate(20) and soundproof rods(30), making use of fixing frames, a metal plate body is bent with two steps to divide the metal plate body into upper and lower surfaces. Upper and lower fixing frames(10) having plural vent holes formed in the longitudinal direction are arranged to one of the upper and lower surfaces. The soundproof rod is situated at parts of the upper and lower fixing frames, where the vent holes are formed, and is joined by bolts and then front upper and lower bent parts(21) of the soundproof plate are forcibly fitted into space parts formed to the ends of the fixing frames and the soundproof rod.
Patent KR-20040074260-A (KR)
Inventor: KIM MAN SU
IPC: F04D29/38
Filed: 2003-02-17
Abstract: PURPOSE: A fan structure of a blower is provided to use the fan structure in a circular duct type blower while improving quality and reliability of the blower and reducing noise and vibration. CONSTITUTION: A fan structure of a blower includes a body section(10), a fan(13) and a boss(12). The body section(10) has a conical shape and is formed at an inner portion thereof with a cavity. The fan(13) has a plurality of blades, which are fixedly arranged around an outer peripheral portion of the body section(10) while forming a predetermined interval. The boss(12) has a rotating shaft fixedly inserted into an upper end of the body section(10). The fan(13) is fixed to the outer peripheral portion of the body section(10) by means of a rivet or welding.
Patent KR-20030036290-A (KR)
Inventor: LEE HYEON U
IPC: G06Q50/00
Filed: 2003-02-19
Abstract: PURPOSE: A method and system for supplying a virtual society service based on an address using the Internet is provided to supply web pages having different identification coordinates and addresses for each member user, arrange the web page on a virtual space, classify and integrally manage other web pages adjacent to each web page according to neighborhoods, cities, and countries, thereby forming a community. CONSTITUTION: At least one user computer(110) capable of connecting to the Internet(120) includes a web browser for using a virtual society service based on an address. A virtual society service server(130) supplies each web page having different identification coordinates and addresses according to member users, arranges the web page on a virtual space, and executes a creation, an allocation, a movement, a modification, and a deletion function. The virtual society service server(130) integrates adjacent web pages based on the identification coordinates manages the web pages as the unit of an aggregate unit of sequential upper concept. The virtual society service server(130) supplies the virtual society service based on an address of an organic community by linked web pages interactively to the user computer. A database server(140) stores databases of each user, the identification coordinates of the web pages, a database of the address, an item database, and a constitution information database of the web page, and links with the virtual society service server(130).
Patent KR-20040076902-A (KR)
Inventor: KIM TAE HYONG
IPC: G01D9/00
Filed: 2003-02-27
Abstract: PURPOSE: A method for recording operation information of a driver is provided to improve a safety of a vehicle operation, and to precisely find a reason a vehicle accident when the vehicle accident occurs. CONSTITUTION: A method for recording operation information of a driver includes the steps of providing an electronic driving license equipped with an IC chip in which personal information of a driver is stored and reading information of the electronic driving license by using a terminal. A central processing unit system controls a vehicle ignition unit by analyzing information transferred thereto through the terminal and stores personal information of the driver and vehicle operation data therein.
Patent KR-20040002449-A (KR)
Inventor: BARCLAY GEORGE G
IPC: G03F7/004
Filed: 2003-03-03
Abstract: PURPOSE: A photoresist composition, its preparation method, a method for forming a photoresist relief image by using the composition, a product obtained by using the composition, a polysiloxane and its preparation method are provided, to allow a polysiloxane having a remarkably improved uniformity to be prepared. CONSTITUTION: The polysiloxane is prepared by polymerizing at least one reactive silane compound in the presence of a compound having a multi-reactive nitrogen moiety to prepare a polysiloxane. The photoresist composition is prepared by mixing the polysiloxane with a photoactive component. Preferably the silane compound is selected from trihalosilane, trihydroxysilane and trialkoxysilane. Preferably the silane compound contains a photoacid-labile group.