baber/WOPTO huggingface dataset:
Patent KR-20010096250-A (KR)
Title: Resin agitator for fabric coating machine
Inventor: SHA KONG PYO
IPC: D06B1/12
Filed: 2000-04-18
Abstract: PURPOSE: A stirring device of resin on a coating machine of textile is provided, which is characterized by preventing all sorts of coating badness owing to preventing gelation easily and discharging air easily by stirring resin stored in a resin tank. CONSTITUTION: The stirring device is comprised of: the resin tank(2) having a knife(1); a frame(10) set on the upper part of the resin tank(2); a rodless cylinder(20) installed on the frame(10) in the direction of length; a housing(40) which is supported by brackets on a slide(21), moving left-and-right; a stirring shaft(50) which is installed on the housing(40) in the direction of axis and sets stirring wings(51) rotating and stirring the resin; a pinion(60) which is inserted on the upper part of the stirring shaft(50), driving the stirring wings(51); a rack(70) set on the upper part of the frame(10), fitted-joined with the pinion(60) and having a sloping side(71); a guide bracket(80) which is set on the upper part of the housing(40), guarding the pinion(60); and a taper roller(90) which is connected to the upper part of the guide bracket(80) with a roller shaft(91), moving on following the sloping side(71).
Patent KR-20010097473-A (KR)
Inventor: CHO BONG JONG
IPC: E01B5/18
Filed: 2000-04-24
Abstract: 본 발명은 철도 선로의 분기기 구간중 선로가 교차하는 크로싱부의 결선부를 방호하여 열차의 이선진입을 방지토록 설치되는 가드레일을 손쉽고, 용이하게 설치할 수 있는 가드레일 결합장치에 관한 것으로 그 기술적인 구성은, 기본 레일(10)이 고정되는 가드 상판(20) 양측으로 레일 밀림 방지턱(30)이 형성되는 클립 고정구(40)가 설치되어 상기 기본레일(10) 저부 양측이 펜드롤 클립(50)으로 결합 고정토록 되며, 상기 가드 상판(20)의 일측에는 가드 본체부(60)가 돌출되어 상기 레일(10)과 이격 설치되고, 상기 가드 본체부(60)의 내측면에는 가드레일 지지구(70)가 설치되어 그 상측으로 ㄷ자 앵글 형상의 가드레일(80)이 설치되고, 상기 가드레일(80)은 결합볼트(90)로서 상기 가드 본체부(60)와 결합 고정토록 되는 것을 요지로 한다.
Patent KR-20010103882-A (KR)
Inventor: PARK IL SU
Filed: 2000-05-09
Abstract: 본 발명은 대형 디젤 엔진내의 연료 차단 시스템의 연료 차단 모터 작동시 엔진측으로 연결된 케이블(Cable)과 러버(Rubber)의 마찰로 모터 상면에서 떨어지는 수분이 케이블을 타고 흘러서 케이블내에 축적되어 동절기 수분의 빙결로 인해 케이블이 움직이지 않아 엔진 시동 불능 상태를 방지하기 위한 정지 모터(Stop Motor) 어셈블리에서 케이블내 수분 유입 방지를 위한 장치에 관한 것이다. 
     본 발명은 키 스위치(1)의 작동으로 회전하는 정지 모터(6)와, 상기 모터를 지지하는 모터 블랫커트(7)와, 키의 온(On)/오프(Off)에 의하여 모터(6)가 회전하여 밀리거나 당겨지는 케이블(8)과, 상기 케이블을 감싸고 있는 러버(9)와, 일측은 상기 모터 블랫커트에 회전가능하게 고정되고 타측은 상기 케이블과 스프링이 연결되어져서 상기 정지모터 회전시 상기 케이블을 수평 상태로 왕복 운동하게 함으로써 수분이 상기 케이블내에 축적되는 것을 방지하는 레버(10)와, 상기 레버의 움직임을 조절하는 스프링(11)과, 상기 레버의 양쪽에 있어 상기 모터 블랫커트와 상기 스프링을 이어 주는 이음핀(12)과, 상기 스프링을 지지하는 샤프트(13)로 구성되는 것을 특징으로 한다. 
     상기한 구성의 본 발명에 따르면, 겨울철 시동 불능 방지를 가능하게 하여 운전자의 차량 운행시간을 향상시킬 수 있는 효과가 있다.
Patent KR-20000050090-A (KR)
Inventor: CHA JI HYUK
Filed: 2000-05-15
Abstract: PURPOSE: A method and a system for identifying an internet banking individual real name is provided to activate on-line internet financial transaction by satisfying all legal conditions of an identity identifying system under a financial real name system. CONSTITUTION: A branch office terminal(12) extracts and inputs the resident registration number, password, fingerprint data of a client who visits for internet banking service application and fingerprint registration for the first time. An internet banking server(13) transmits the resident registration number, password, fingerprint data of the client inputted from the branch office terminal(12) to a financial certified institute server(14). The financial certified institute server(14) processes resident registration numbers, passwords, fingerprint data inputted from the internet banking server(13) and stores them in a fingerprint DB(15).
Patent KR-20010020881-A (KR)
Title: Semiconductor device having multiple power-supply nodes and capable of self-detecting power-off to prevent erroneous operation
Inventor: KATO HIROSHI
IPC: G11C11/407
Filed: 2000-05-23
Abstract: PURPOSE: A semiconductor device is provided to prevent occurance of malfunction by detecting the interruption of a power source at the time of standby by itself in the semiconductor device to which multi-power source are inputted. CONSTITUTION: A potential detector(51) generates a reference potential lower than a power source potential of 3.3 V by 1.5 V, and detects the interruption of a power source by comparing potentials of power source wiring of 1.5 V group with the reference potential. An output of the potential detector(51) is given to a gate of a N channel MOS transistor(66) through a level converting circuit(62). Then N channel MOS transistor(66) fixes an output of an internal circuit(28a) operated by a power source of 1.5 V group.
Patent KR-20010107124-A (KR)
Title: 개선된 방열기를 가지는 변압기 케이스
Inventor: DOO SEUK YUEL
IPC: H01F27/02
Filed: 2000-05-25
Abstract: 본 발명은 개선된 구조의 방열기를 가지는 변압기 케이스에 관한 것으로서, 절연유 및 트랜스(T)가 내장되는 본체(10)와, 그 본체(10)에 설치되어 열을 외부로 방출하는 방열기를 포함하는 변압기 케이스에 있어서, 본체(10)에는 상하 방향으로 적어도 2개 이상의 기다란 절연유통공(11)이 형성되어 있고; 방열기(20)는 절연유가 순환하는 절연유공간(21)이 형성된 판형상의 방열기본체(22)와, 그 방열기본체(22)의 단부에서 절곡된 절곡날개(23)를 포함하여서; 절연유통공(11)과 절연유공간(21)이 서로 연통되도록 위치된 상태에서 절곡날개(23)가 본체(10)에 접합된다. 이러한 구조의 변압기 케이스에 따르면, 단순한 구조의 방열기를 가짐으로써 변압기의 제조 및 결합공정을 줄일 수 있고, 이에 따라 변압기의 생산 단가를 낮추고 생산성을 향상시킬 수 있다는 효과가 있다.
Patent KR-20010110597-A (KR)
Inventor: PARK HAN GYU
Filed: 2000-06-07
Abstract: 본 발명은 편향코일 권선기에 관한 것으로, 그 숫권형은 동력원에 의하여 회전되는 숫 원판부재에 조립되는 숫권형 안장(1212) 및 숫권형 가이드(1214)를 구비하고, 숫권형 가이드(1214)의 측면에는 숫권형 안장(1212)을 향하여 복수의 관통홀(1310)이 관통 형성되며, 숫권형 가이드(1214)의 내부에는 관통홀(1310)을 향하여 왕복 운동이 가능하도록 복수의 왕복 운동 기관(1320)이 설치되고, 관통홀(1310)과 왕복 운동 기관(1320)과의 사이에 왕복 운동 기관(1320)에 의하여 타격되는 지지체(1330)가 배치되며, 지지체(1330)에는 관통홀(1310)의 배치 형태에 대응하는 배열로 복수의 통공(1331)이 형성되고, 통공(1331)에는 왕복 운동 기관(1320)에 의한 지지체(1330) 타격에 연동하여 관통홀(1310)을 통해 숫권형 안장(1212)을 향하여 인출되도록 복수의 작동핀(1340)이 유동 및 탈거 가능하게 선택적으로 끼움 결합되어, 편향코일에 형성시킬 핀홀의 위치를 가변하기 위하여 별도의 어셈블리를 제작할 필요 없이 작동핀의 위치 조절을 통해 용이하게 가변시킬 수 있는 높은 호환성 및 확장성이 제공된다.
Patent KR-20010113994-A (KR)
Inventor: KIM SANG GON
IPC: H04Q9/00
Filed: 2000-06-20
Abstract: 본 발명은 자동화 창고나 공장 자동화 설비 등과 같이 지상제어반(Local system)과 기상제어반(Remote system)으로 구분되어 있는 시스템에서 지상제어반과 기상제어반 사이에 피엘시(PLC)와 포토센서를 이용하여 무선 직렬 통신하는 장치에 관한 것이다. 이러한 본 발명의 장치는  지상제어반과 기상제어반 사이에 직렬 통신을 수행하는 장치에 있어서, 상기 각 제어반이, 송신 데이터의 비트0과 비트1을 서로 다른 펄스폭 타이밍으로 정의하여 소정 포멧의 프레이밍에 맞춰 출력하고, 입력카드로부터 수신된 비트 스트림의 타이밍을 카운트하여 비트0과 비트1 및 에러를 판정하는 PLC시스템; 상기 PLC시스템의 출력카드에 접속되어 송신 데이터를 광신호로 변환하여 출력하는 투광부; 상대방으로부터 수신된 광신호를 전기적인 신호로 변환하여 상기 PLC시스템 입력카드로 비트 스트림을 출력하는 수광부를 포함하는 것을 특징으로 한다. 따라서, 본 발명에 따르면 자동화 설비의 지상 제어반과 기상 제어반 사이에 통신을 수행함에 있어서 각 제어반에서 사용되는 PLC와 포토센서를 이용하여 직렬 통신 기능을 무선방식으로 구현함으로써 비용을 절감할 수 있고, 범용으로 사용할 수 있는 잇점이 있다.
Patent KR-20000054764-A (KR)
Inventor: CHO IN HO
IPC: G06Q50/22
Filed: 2000-06-22
Abstract: PURPOSE: A packing envelope automatic output system for a medical treatment information transfer and a medicine treatment using a medical card are provided for enhancing an efficiency of a medicine treatment service based on a medical treatment by automatically printing dosage of a treated medicine using a printer connected with a computer. CONSTITUTION: A system according to the present invention includes a hospital terminal system(10) installed in a hospital, a drugstore terminal system(30) installed in a drugstore, and a medical card(20). Here, the hospital terminal system(10) includes a hospital computer(11), and a card data read/write unit(12). The hospital computer(11) is computer operated by a medical doctor.
Patent KR-20020001239-A (KR)
Title: apparatus of adhesion texture
Inventor: PARK MIN SEOK
IPC: D06H5/00
Filed: 2000-06-27
Abstract: PURPOSE: An adhering equipment of textile is provided, which is characterized by increasing binding force, preventing soak of adhesive through the textile, improving touch, maintaining uniform adhered condition of a double textile and making it possible to adhere a multi-layer textile. CONSTITUTION: Operation of the adhering equipment is as follows: coating the first textile(30) with adhesive(10) on an adhesive supplying roller(20) compressed with a supplying roller(40) of the first textile(30); passing the transferred first textile(30) through the inside of an adhesive dryer(70) to dry adhesive coating the first textile(30); coating the second textile(130) with the adhesive(10) on an adhesive supplying roller(120) compressed with a supplying roller(140) of the second textile(130); and then passing the coated first textile(30) and the coated second textile(130) through a pair of pressing rollers(160) to adhere.
Patent KR-20010007551-A (KR)
Inventor: YOSHIOKA TOSHIYASU
IPC: C09J5/00
Filed: 2000-06-28
Abstract: PURPOSE: To provide a laminated panel hard to generate delamination in both of an adhesive extending direction and the direction crossing this direction and having an adhesive applied thereto in a state not exuding to the outer surface of a sheet or not spreading over the inner surface of the sheet. CONSTITUTION: In a laminated panel 1 wherein at least two sheets superposed one upon another are bonded mutually through adhesives B1, B2 applied to at least one of the opposed sheet surfaces of the sheet members, the adhesives B1, B2 form a large number of adhesive lines independently extending in one direction in a bent form without crossing each other.
Patent KR-20010029874-A (KR)
Title: Semiconductor device and method of manufacturing the same
Inventor: GOTO YOSHIRO
IPC: H01L21/28
Filed: 2000-06-30
Abstract: PURPOSE: To provide a semiconductor device which can avoid the problem where an unwanted current flows or where the gate oxide film breaks, caused by tie of a gate oxide film, and its manufacture. CONSTITUTION: In the manufacture of a semiconductor device, a polysilicon film is made on a thermal oxide film formed on a silicon substrate 31, and a gate electrode 35 and a gate oxide film 32a are formed through etching, and after removal of a photoresist film, a peripheral oxide film 38 united with the gate oxide film 32a and the thermal oxide film is made through thermal oxidation method around the gate electrode 35. Furthermore, a sidewall oxide film 38a united with the gate oxide film 32a and covering the sidewall of the gate electrode 35 is made, and a nitride film 43 made over the entire surface of the silicon substrate 31 is etched back to form a sidewall nitride film covering the sidewall oxide film 38a and sticking fast to the silicon substrate 31, and on the silicon substrate 31, source and drain region diffused layers 45 and 46 corresponding to the gate electrode 35 are made.
Patent KR-20000059064-A (KR)
Title: Elastic exercise device for controllable resistance
Inventor: KIM YANG SOO
IPC: A63B21/02
Filed: 2000-07-12
Abstract: PURPOSE: An elastic sports machine is provided which continuously adjusts the exercise length and resistance as each exerciser so that it helps each person to exercise in a tune with each own physical state. CONSTITUTION: The resistance adjusting style elastic sports machine comprises the parts of: a rubber string band(10) wherein both faces are woven and inserted; a band adjusting hole(20) which is bound with one part of the band to adjust the length of the band to fit to the body; a feet insertion part(30) wherein a mouth part is placed to interpolate users' feet in one part of the band; a knot(50) which is projected toward one side of the band to bind a spring(40); a spring wherein a fixation stand is placed at both sides in a parallel way with the band; and a total-style grip(70) which is placed at one edge of the band.
Patent KR-20010039739-A (KR)
Title: Treatment system for food and drink sweepings
Inventor: FUJIMOTO KEIICHI
IPC: B09B3/00
Filed: 2000-07-21
Abstract: PURPOSE: To miniaturize a waste water treatment apparatus by using a flow channel changeover device and to prevent the lowering of treatment capacity caused by the inflow of waste water to the waste water treatment apparatus in an amt. equal to or more than treatment capacity even at a time of power failure. CONSTITUTION: A garbage treatment system is equipped with garbage grinding means (disposer 2), a waste water treatment apparatus 4 for treating waste water containing the ground matter from the grinding means and a flow channel changeover apparatus 3 for changing over the flow channel of waste water at a time of the use of the grinding means from sewerage to the waste water treatment apparatus 4 by an electromotive changeover means. A return mechanism for returning the flow channel to the sewerage when the power to the flow channel changeover apparatus 3 is cut off is provided to the flow channel changeover apparatus 3.
Patent KR-20010049848-A (KR)
Inventor: FUJIYOSHI TOSHIYUKI
IPC: A47L9/24
Filed: 2000-07-22
Abstract: PURPOSE: To provide a vacuum cleaner with a hose reduceable in poof operation, allowing exhaust air from an electric blower built in a cleaner body to be returned into a suction implement via a hose and a pipe. CONSTITUTION: This vacuum cleaner has a suction passage and an exhaust passage formed in a hose 21, a pipe and a suction implement to be connected to a cleaner body in which an electric blower is built, the exhaust passage serving for returning exhaust air from the electric blower. The hose 21 consists of an outside hose 22 and an inside hose 23 to form the exhaust passage and the suction passage, and a long member is wound on the outside hose 22 and the inside hose 23 to form a tubular, flexible hose which assures easier flexibility of the outside hose 22 than that of the inside hose 23.
Patent KR-20020010334-A (KR)
Title: Pre-arbitration Method For Global Bus
Inventor: PARK HUI CHEOL
IPC: H04L12/56
Filed: 2000-07-29
Abstract: PURPOSE: A bus use right pre-arbitration method of a global bus is provided to enable a simple construction by excluding complicate connection lines for a plurality of nodes required for a general packet bus and to be effectively used in case that there is so many populations participating in a bus to cause much time to search every node and there is not much room for a physical connection allocation of each individual as many addresses are requested. CONSTITUTION: In order to arbitrate a bus use right when at least more than two nodes has accessing buses together and accesses the bus, there is at least two signals to request a bus use right and each node performs at least more than two node counting for arbitration of the bus use request. When one of the at least two nodes requests a bus use, a corresponding node counting is temporarily suspended in response to the bus use request, a bus use right is received to manage the bus. A node counting of the remaining nodes except for the node which is using the bus is performed, and when one of the remaining nodes requests a bus use, the node counting of the node is temporarily suspended, and accordingly, a reservation of user right of a bus in the next order is made, and it is in a standby mode until the bus use of the node that is currently using the bus is terminated. When the bus use of the node that is currently using the bus is terminated, the bus use of the reserved node is allowed.
Patent KR-20020012890-A (KR)
Title: Experimental Testbed for the Attitude Control of Spacecraft
Inventor: CHOI HONG TAEK
IPC: G09B9/52
Filed: 2000-08-09
Abstract: PURPOSE: Provided is a position control experiment equipment for an artificial satellite which adjusts the height of copy structure for the artificial satellite to move weight center of the structure up and down so that it helps to coincide weight center of copy structure with rotation center of air bearing in an easy way. CONSTITUTION: The position control experiment equipment for the artificial satellite is characterized by fixing an up/down bolt with a screw formed outside at the intermediate lower part of the copy structure for the artificial satellite, interpolating the up/down bolt between a guide road in the upper part of the air bearing and a screw housing and inserting a nut into the exterior side of the up/down bolt to ride on a key and move up and down as the nut is rotated.
Patent KR-20010039818-A (KR)
Title: Turbine brush seal protection device and method
Inventor: CROMER ROBERT HAROLD
IPC: F16J15/32
Filed: 2000-08-17
Abstract: PURPOSE: A protecting device and method for turbine brush seal is provided to protect a bristle of a brush seal from damage at the time of installation for the component of a gas turbine sub-assembly. CONSTITUTION: A turbine brush seal protection device(58) has an annular substrate(60) having an outer periphery(62). A slot(66) is opened at the outer periphery(62). The slot(66) receives a part of an annular brush seal of a gas turbine assembly so that the annular substrate(60) can at least partially cover the brush seal at the time of installing a gas turbine. The annular substrate(60) is detachably fitted to the stationary portion(68) of a gas turbine assembly.
Patent KR-20020015818-A (KR)
Title: semiconductor device and method for manufacturing the same
Inventor: KWON HO YEOP
IPC: H01L21/76
Filed: 2000-08-23
Abstract: PURPOSE: A semiconductor device is provided to make source/drain resistance small by forming a source/drain region and by sufficiently performing a heat treatment after an ion implantation process, and to improve a characteristic of a transistor by omitting a high temperature process after a gate for controlling a threshold voltage is formed. CONSTITUTION: An active region and a field region are defined in a semiconductor substrate(21). An isolation layer(22) is formed in the field region of the substrate. A plurality of trenches(26) having a predetermined depth are formed in the active region of the substrate, separated by a predetermined interval. A source/drain impurity region is formed in the semiconductor substrate between the respective trenches. An insulation layer sidewall is formed on both side surfaces of the trench. A gate oxide layer(28) is formed on the bottom surface of the trench. A gate electrode(29) is formed on the gate oxide layer inside the trench. An interlayer dielectric(30) is formed on the semiconductor substrate, having a contact hole exposing a predetermined portion of the source/drain impurity region. A polysilicon plug(31) is formed inside the contact hole.
Patent KR-20010030134-A (KR)
Title: Copper conductive line with redundant liner
Inventor: STAMPER ANTHONY K
IPC: H01L21/768
Filed: 2000-08-25
Abstract: PURPOSE: A method for manufacturing an interconnection part with a double barrier layer is provided to prevent the intermediate connection part from being disconnected at an early stage and to remarkably improve the lifetime of an electronic device having the interconnection part, by forming a high conductive metal layer of excellent electromigration resistance between a conductive adhesion increase layer and a diffusion barrier layer. CONSTITUTION: An insulator or dielectric is formed on a substrate. An opening of a metal wire, via and/or damascene wire type are formed inside the insulator or dielectric. The first conductive adhesion increase/diffusion barrier layer(15) is applied in the opening. The first conductive layer of a predetermined section having electromigration resistance is applied on the first adhesion increase/diffusion barrier layer. The second conductive adhesion increase/diffusion barrier layer(21) is applied on the first conductive layer. A soft low resistance-centered metal layer is applied on the second adhesion increase/barrier liner layer to fill the opening so that a wire or via is formed.
Patent KR-20020017314-A (KR)
Title: A liquid crystal display and a panel for the same
Inventor: KIM GYEONG HYEON
IPC: G02F1/1333
Filed: 2000-08-29
Abstract: PURPOSE: A liquid crystal display and substrates used in the liquid crystal display are provided to form pixel electrodes in the shape of trapezoid to uniformly divide domains, thereby improving the response time and screen quality. CONSTITUTION: A liquid crystal display includes a first insulating substrate, a plurality of first lines(10) formed on the first insulating substrate, a plurality of pixel electrodes(41,42,51,52,61,62) formed on the first substrate with first to fourth sides forming a trapezoidal shape, of which first and third sides are in parallel with the first lines, and second lines(20) formed on the substrate crossing the first lines and parallel with the second and fourth sides of the pixel electrodes, wherein the second sides of the pixel electrodes form different angles in the range of 80° to 100° with two adjacent first lines.
Patent KR-20020020566-A (KR)
Title: Advertisement method using a wireless communication network
Inventor: BAE IN CHEOL
IPC: H04W4/20
Filed: 2000-09-09
Abstract: PURPOSE: An advertising method is provided to access the advertisement in case that a user uses a portable terminal so as to stimulate the user's interest in using the portable terminal. CONSTITUTION: A mobile communication terminal member tries to connect to a server of an internet service provider through the Internet(410). The terminal member becomes a member on a main page of the internet service provider(420). The member is registered and managed(430). Member information registered is provided to a mobile communication service provider(440). The mobile communication service provider registers the member information in a database(450). In case that an arbitrary originator tries to communicate with the member, the originator makes a request for communicating with a specific terminal member(460). The mobile communication service provider checks whether a receiver is a member(470). In case that the receiver is the registered member, the service provider transmits advertisement data including call data(480). In case that a receiving mode is searched in a stand-by state, a member terminal receives the advertisement data(490). A control unit separates the advertisement data into video/audio data(510). The member tries to convert into a call mode for listening to a commercial message song(520).
Patent KR-20010039959-A (KR)
Title: Vehicle lamp and method of determining reflective surface of reflector thereof
Inventor: NATSUME KAZUNORI
IPC: F21W107/10
Filed: 2000-09-30
Abstract: PURPOSE: To provide a reflector wherein the appearance/shape of the reflection plane is a thin type having a transparency, and the functional condition of light uniformity and light diffusion property is enhanced and to provide a method of determining the reflection plane of a vehicle lamp. CONSTITUTION: Based on a free formed surface 20 made in order to satisfy light uniformity and thinness, that is, shape condition, among functional conditions, a reflection plane 10a of a reflector comprises a reflection plane element 14 made in order to satisfy light diffusion property and the transparent feeling, that is, appearance condition, among functional conditions, on the segment into which the free-formed surface 20 is divided in array shape. Especially, by forming the free-formed surface 20 or reflection plane 10a so that luminous existence M stipulated with respect to the direction along light axis satisfies the condition Mmax/Mmin <= 6, it is possible to realize the above respective conditions appropriately.
Patent KR-20020027091-A (KR)
Inventor: CHOI YEON JIN
IPC: C12N1/20
Filed: 2000-10-06
Abstract: PURPOSE: Provided are a novel microorganism, Penicillium simplicissimumGM31, isolated from soil and producing beta-D-glucosaminidase used for the manufacture of D-glucosamine and a process for preparing D-glucosamine by using the same protein. CONSTITUTION: The manufacturing method of beta-D-glucosaminidase having 110000 Da of molecular weight comprises the steps of: culturing Penicillium simplicissimumGM31 (KMCC-10215) in MCY medium containing 1.0-5.0%(w/v) of colloidal chitosan at 20-30 de3g.C and pH 5.0-9.0; and subjecting the culture to column chromatography. D-glucosamine is effectively manufactured by decomposing chitosan with the manufactured protein, beta-D-glucosaminidase.