baber/WOPTO huggingface dataset:
Patent KR-20000021072-A (KR)
Title: Method for forming cmos type transistor
Inventor: JWA SEUNG HEE
IPC: H01L27/08
Filed: 1998-09-25
Abstract: PURPOSE: A method for forming CMOS(Complementary Metal Oxide Semiconductor) type transistor is provided to raise cell access velocity because of rapid turn on operation of the gate. CONSTITUTION: A method for forming CMOS type transistor comprises a step forming a gate electrode(30) and spacers on both sides of the gate electrode, a step of forming P and N type junction region(32,35) adjacent each other, a step of forming a metal layer(37), a step of forming a metal silicide layer(39) and flattening an insulating film(40), a step of forming a contact hole, and a step of forming a metal wiring. The silicide layer is formed by annealing the insulating film coated on the metal layer. The contact hole is formed by etching the photoresist film coated on the insulating film.
Patent KR-20000021878-A (KR)
Title: Apparatus for generating menu of satellite broadcasting receiver and method for servicing menu
Inventor: LEE JAE BEOM
IPC: H04N7/08
Filed: 1998-09-30
Abstract: PURPOSE: An apparatus for generating menu of satellite broadcasting receiver is provided to generate a composition menu screen in which a main menu and a sub-menu are mixed so as to recognize the latest sub-menu. Also, a method for servicing a menu of satellite broadcasting receiver is provided to certainly recognize the latest sub-menu when the composition menu screen is provided on the monitor. CONSTITUTION: An apparatus for generating menu of satellite broadcasting receiver includes a memory block(112), a menu generator(202), a first buffer memory, a second buffer memory, a switching block(206, 207), a data transformation block(208), and a data composition block(210). The memory block is to store a large number of menu screen, which is predetermined, to need a menu service. The menu generator is to generate a preceding menu screen data having at least one follow menu item to necessitate generation of the following menu screen depending on a corresponding menu screen which extracts in a data for generating a menu and the memory block which are provided from a controller, with responding a signal for requiring a menu service requirement which is provided from the controller. The first buffer memory is to temporarily store the generated preceding menu screen data. The second buffer memory is to store temporarily store the following menu screen data. The switching block is to switch outputs of the preceding and the following menu screen data. The data transformation block is to generate a preceding menu screen data which brightness is transformed when the following menu item is selected. The data composition block is to output a composition menu screen data which is acquired by mixing of the following menu screen data.
Patent KR-19990030344-A (KR)
Title: 유모거
Filed: 1998-10-16
Abstract: 본 발명은 기존의 유모차와 자전거를 합친 것으로서, 유아의 체대(1)와 인위적 동력전달장치인 자전거(2)를 조향축 역할겸, (1), (2)를 결합 역할하는 핀(3)을 이용하여 발명한 것이다. 
     엄마가 안장(12)에 앉아서 유아를 체대(1)에 태우고 물건은 짐받이판 위에(13)싣고 페달(13)를 밟아서 주행할 수 있다. 
     또한 간단한 유아용품 수납칸(8)이 있으며, 소량의 빗방울이나 따가운 햇볕을 피할 수 있는 자바라 캡(6)이 설치되어 있으며 정면충돌시 유아의 최소한의 안전을 위하여 발디딤대 겸 범퍼(18)을 장착했고 내리막 경사면에서 속도를 제어할 수 있는 브레이크 핸들(5)도 있다.
Patent KR-20000026603-A (KR)
Title: Oral preparation formula containing s-(3-hydroxypropyl)-l-cystein
Inventor: MURATA MISAO
IPC: A61K47/40
Filed: 1998-10-21
Abstract: PURPOSE: A solid formulation containing S-(3-hydroxypropyl)-L-cystein for oral preparation which does not be decolorized after a long period of storage is provided by mixing with a vehicle of substantially, only starch or cyclodextrin. CONSTITUTION: An oral preparation formula comprises S -(3-hydroxypropyl)-L-cystein(HPCY) which is useful as an expectorant and a vehicle which substantially contains only starch, or cyclodextrin. The starch which can be used for this formulation includes corn starch, potato starch, wheat starch, rice starch and the mixtures thereof, and the cyclodextrin, for example, includes alpha-cyclodextrin, beta-cyclodextrin, gamma-cyclodextrin and the mixtures thereof. The used amount is not particularly limited, but starch or cyclodextrin is used 0.01-8parts by weight, and preferably 0.02-4 parts by weight, per 1 part by weight of HPCY.
Patent KR-19990037339-A (KR)
Title: 횡전계 구동 방식 액정 표시 장치
IPC: G02F1/1335
Filed: 1998-10-23
Abstract: (a) 서로 대향하고 서로 이격된 제 1 및 제 2 편광판 (15 및 16),  (b) 제 1 및 제 2 편광판 (15 및 16) 사이에 위치된 액정층 (20) 으로서,  액정층 (20) 의 배향 방위가 기판에 대하여 평행한 전계에 의하여 변화하게 되는 액정층 및 (c) 제 1 및 제 2 편광판 (15 및 16) 사이에 위치된 제 1 보상층 (25) 을 포함하고,  상기 제 1 보상층 (25) 은 양의 일축성의 광학 이방성을 갖고 기판에 대하여 수직으로 연장되는 광축을 가지며,  복굴절량을 변화시켜 시야각의 변화에 의하여 발생되는 액정층 (20) 의 복굴절량의 변동을 보상하는 것을 특징으로 하는 횡전계 구동 방식 액정 표시 장치가 제공된다.     제 1 보상층의 복굴절량의 변화는 액정층의 복굴절량의 변화를 상쇄시키기 때문에,  횡전계 구동 방식 액정 표시 장치는 시야각의 변화에 의하여 색을 띠지 않는 고화질의 이미지를 제공한다.
Patent KR-20000031812-A (KR)
Title: Call tracing method in pcs system
Inventor: OH SAN MI
IPC: H04B7/26
Filed: 1998-11-10
Abstract: PURPOSE: A call tracing method is provided to trace a signal data, transmitted over a number 7 signal system between a PCS exchange(PCX) and a base station controller(BSC), in a message transfer part layer 2(MTP 2). CONSTITUTION: A call tracing method comprises steps of inputting a command for tracing a received data or a transmitted data (S1), toggling a received data trace flag(1) or a transmitted data trace flag(1)(S2), checking the received data trace flag or the transmitted data trace flag by interrupting receiving a data from PCX or requesting a data from CNSX(S3), processing the received data or the data request if the flag is not established(S4), displaying lower data of the received data buffer or the transmitted data buffer and processing the received data or the transmitted data (S5), inputting a command for tracing a received data or a transmitted data (S6), toggling a received data trace flag(0) or a transmitted data trace flag(0)(S7), and stopping the data trace(S8).
Patent KR-20000033103-A (KR)
Title: Deflection yoke for cathode ray tube
Inventor: LEE SUCK MOON
IPC: H01J29/76
Filed: 1998-11-19
Abstract: PURPOSE: A deflection yoke of a cathode ray tube is provided which excludes the quality deterioration of the deflection yoke due to the deterioration of a heat generation generated in a horizontal deflection coil and the difficulty of fabricating the deflection yoke. CONSTITUTION: A deflection yoke is provided which improves the deflection sensitivity by minimizing the distance between a saddle type deflection coil and an electron beam. The deflection yoke includes a pair of flat members(100,101) which are serial-connected independently to a pair of horizontal deflection coils(19,19a) respectively by that a pair of saddle type circuit coil having random turns are formed on a pair of heat-resistant bases with a print technique. The pair of flat members deflect the electron beam together with the pair of horizontal deflection coil, adhering closely to an outer side around a neck part of a funnel.
Patent KR-20000033383-A (KR)
Title: Optical wave guide for reducing birefringence by using buffer layer, and fabrication method therefor
Inventor: KIM TAE HOON
IPC: G02B6/02
Filed: 1998-11-23
Abstract: PURPOSE: An optical wave guide and a fabrication method therefor are provided to reduce birefringence generated due to residual stress during the fabrication of a silica optical wave guide and an optical device according to flame hydrolysis deposition (FHD), by employing a buffer layer. CONSTITUTION: An optical wave guide comprises: a lower cladding layer(203) formed on a wafer(201); a core layer(204) formed on the lower cladding layer(203); an upper cladding layer(205) formed on the core layer(204); and a buffer layer(202) for reducing birefringence resulting from residual stress between the wafer(201) and the lower cladding layer(203). A step for depositing the buffer layer(202) on the wafer(201) at an initial stage is added without changing the prior process for fabricating a device, thereby reducing birefringence. In addition, stress can be adjusted by controlling the kind and content of impurities in the buffer layer(202).
Patent KR-19990014572-A (KR)
Title: 무진동 암반 파쇄기
IPC: E21C37/22
Filed: 1998-11-20
Abstract: 본 발명은 본  출원인이 선출원 등록한 실용 신안 등록 제98399호와 관련된 무진동 암반 파쇄기(SUPER WEDGE)에 관한 것이다. 
     상기한 선등록 발명은 이의 발명 요지가 통상의 증기 포그에 브라켓을 핀으로 연결하되 이 브라켓에는 스윙 기어를 개재시킨 지지대판이 설치되고 이 지지대판의 상부에 설치된 로울러에 일단이 감김 고정된 와이어의 하단에는 선단에 파쇄날이 체결된 유압 실린더를 부착한 안내판이 걸림되게 하고 전기한 스윙기어의 내치차는 브라켓에 설치된 감속기 축간과 연동되는 축기어와 맞물림되어 전기한 브라켓이 상향 이동할시는 암반의 수직 파쇄 작업을 하고 브라켓이 하향 이동되었을 때는 수평 파쇄 작업을 할 수 있게한 것이므로 한 대의 작업기로서 수직 방향 및 수평 방향으로 양용되게한 잇점은 있으나 암반을 파쇄할 때는 파쇄날이 하강하면서 암반을 파쇄하도록 하였기 때문에 파쇄날이 쉬히 마모되는 결점이 있고 또한 파쇄날의 각도 조절이 불가능하여 이때에는 포그의 각도를 조절해 주어야 하므로 작업성이 매우 저조한 결점이 있었던 것이다. 
     본 발명은 이상의 제반 문제점을 해결하고자 발명한 것으로 이의 발명 요지는 유압 실린더 지지체(10)의 승강 운동은 정역 모터(5)에 의해 회전 운동되는 체인과 상하 체결부(8)(8')에 의해 이루어지게 하고 좌우 파쇄날개(16)(16') 및 쐐기(19)의 각도 조절은 모터(9)와 연동되는 링기어(9)에 의해 이루어지게 하고 암반에 천공된 구멍에는 실린더 지지체(10)와 연결된 좌우 파쇄 날개(16)(16') 및 이 좌우 파쇄 날개(16)(16')사이에 실린더 로드(17)와 연결된 쐐기(19)를 끼워서 유압 실린더 로드(17)를 하강시키면 이때 쐐기(19)가 하강하면서 좌우 파쇄 날개(16)(16')를 벌어지면서 암반을 파쇄할 수 있게 한 것이다.
Patent KR-20000038608-A (KR)
Title: Method for increasing production of acrylic acid utilizing air separating apparatus
Inventor: SONG KWANG HO
IPC: C07C57/04
Filed: 1998-12-08
Abstract: PURPOSE: Production of acrylic acid is stably increased by removing heat of reaction and increasing propylene content in reaction mixture by utilizing carbon dioxide as a circulating gas. CONSTITUTION: Propylene is oxidized in the presence of a catalyst to form acrolein, and continuously oxidized in the presence of second stage catalyst using carbon dioxide as a diluent gas in the reaction mixture containing 6-10 mole % of propylene, 5-15 mole % of steam, 9-19 mole % of oxygen, 0-30 mole % of nitrogen and 50-80 mole % of carbon dioxide to give the acrylic acid. The oxygen is supplied by an oxygen separating apparatus.
Patent KR-20000038713-A (KR)
Title: Chip selecting signal generator
Inventor: GONG IN UK
IPC: G06F9/00
Filed: 1998-12-08
Abstract: PURPOSE: A chip selecting signal generator is provided to reduce a consuming current and a chip dimension by generating a chip selecting signal just by some OR gates, without a comparator. CONSTITUTION: A chip selecting signal generator comprises an exclusive OR gate(10), an undefined processor(12), and a logic circuit(14). The exclusive OR gate(10) outputs an exclusive OR result through the exclusive OR of an address' upper bits and a start address in an address area of the chip selecting signal. The undefined processor(12) don't care bits included bits expressing an area size of the chip selecting signal among the exclusive OR results. The logic circuit(14) outputs a result of logical combination as the chip selecting signal through the logical combination of the exclusive logical OR result and the undefined processor's output. The chip selecting signal generates by using an address outputted the chip selecting signal, selecting a device among some devices, from the central processing unit. The logical circuit(14) comprises an inverter AND gate, outputting through the inverter AND of the exclusive OR gate's output and the undefined processor's output, and an OR gate, outputting an OR result as the chip selecting signal through OR of the inverter AND gate's output and a disable signal.
Patent KR-19990063077-A (KR)
Title: 플라즈마 처리 방법 및 기판 처리 방법
IPC: H01L21/3065
Filed: 1998-12-15
Abstract: 본 발명은, 배기 시간을 단축하여 전체 처리 속도를 향상시킬 수 있는, CVD, 에칭 또는 애싱 등의 플라즈마 처리를 실시하는 플라즈마 처리 방법을 제공하기 위한 것으로, 환기 가스로서, 플라즈마 처리 가스의 적어도 하나의 성분(O 2 , N 2 , CF 4 등)을 함유하는 가스를 이용하는 단계; 배기에 의해 압력이 플라즈마 처리 압력 값에 이르렀을 때, 환기 가스를 배기하는 단계; 플라즈마 처리 가스를 도입하여 플라즈마 처리 압력을 유지하는 단계; 및 플라즈마 처리를 개시하는 단계를 포함한다.
Patent KR-20000039803-A (KR)
Title: Flexible printed circuit
Inventor: KIM YONG IL
IPC: G02F1/1345
Filed: 1998-12-16
Abstract: PURPOSE: A flexible printed circuit is provided to reduce the width of the printed circuit by half without seriously limiting circuit characteristics. CONSTITUTION: A flexible printed circuit includes a doubled polyimide film(10,20) and metal patterns(30,31). The flexible printed circuit according to the present invention connects a gate substrate of liquid crystal display module and a data substrate. The doubled polyimide film(10,20) are attached to each other about half. The metal patterns(30,31) are arranged on each polyimide film. the terminals of the metal patterns are coupled with each substrate. The metal pattern further has following characteristics. The attached metal pattern is further arranged as a pad, and the non-attached metal pattern is arranged as a terminal.
Patent KR-20000040735-A (KR)
Title: Method for analyzing impurities contained in isopropyl alcohol
Inventor: KIM KYONG HEE
IPC: G01N30/72
Filed: 1998-12-19
Abstract: PURPOSE: A method for analyzing impurities contained in isopropyl alcohol is provided to eliminate the interference materials which disturb quantitative analysis of the impurities. CONSTITUTION: A method for analyzing impurities contained in isopropyl alcohol according to the present invention comprises the steps of introducing isopropyl alcohol sample to be analyzed into a concentration column; concentrating the impurities in isopropyl alcohol at the concentration column and discharging the residue; introducing purified water into the concentration column to eliminate the interference materials which is concentrated in the column along with the impurities and occur the interference in the impurities; introducing the impurities concentrated in the concentration column into a separation column to carry out the separation of the impurities; and quantitatively analyzing the impurities.
Patent KR-20000041480-A (KR)
Title: Method for repeating play of video cd system
Inventor: KIM BEOM JIN
IPC: G11B19/02
Filed: 1998-12-22
Abstract: PURPOSE: A method for repeating play of a video CD system is provided to set a predetermined region as a repeating area and to replay the set region for a predetermined times. CONSTITUTION: A method for repeating play of a video CD system includes six steps. At the first step, a starting point of a repetition region is set to a point at which a repetition region set key is input, and an end point of a repetition region is set to a point at which a repetition region end key is input. At the second step, N repetition regions are set by repeating the first step at every point at which the repetition region set key and the repetition region end key are input. At the third step(306), a repetition region menu screen including an item composed of the set repetition regions and a selection verification item is displayed on a monitor. At the forth step(310), the repetition region menu screen is turned off when one of the items and the selection verification item are selected, and the repetition region selected is replayed for a predetermined times. At the fifth steps, the third and the forth steps are repeated. At the sixth step(302), repetition mode is changed to a standby mode and a play mode.
Patent KR-20000041575-A (KR)
Title: Disk cartridge unified with clamper
Inventor: SEO YOUNG SEON
IPC: G11B23/02
Filed: 1998-12-23
Abstract: PURPOSE: A disk cartridge unified with a clamper is provided to remove a clamper structure of a drive to slim the drive. CONSTITUTION: A disk cartridge unified with a clamper includes a disk(10,20), a cartridge case(21), and a clamper(22). The cartridge case is that the disk is received, a spindle hole and an exposing part are provided. The spindle hole is to receive a turntable of a spindle motor(25). The exposing part is to illuminate a laser beam of an optical pick-up on the disk. The clamper is formed in the center of the disk as one body and clamped to the turntable. A shaft is installed to prevent the revolution center of the disk from being broken away in the center of the disk. The clamper is fixed so as able to attach or detach to the center of the disk.
Patent KR-20000042197-A (KR)
Title: Mold of fireproof material for continuous casting of billet
Inventor: SHIN YONG CHANG
IPC: B22D11/04
Filed: 1998-12-24
Abstract: PURPOSE: A mold of a fireproof material for a continuous casting of billet is provided to improve a service life of the fireproof material and to stabilize an operation. CONSTITUTION: A second fireproof material has the excellent insulation property and a thermal conductivity. The second fireproof material endures a stress by a vibration of a mold though the material is fixed with a water-cooling mold(3) by a bolt in a fixing portion because of the excellent insulation property. And the material is remained without generating a crack during casting. A part directly touched with a steel of high temperature is used a first fireproof material(100) having the excellent heat-resistant shock property. A connected part with the water-cooing mold(3) during supporting the first fireproof material(100) is used as a second fireproof material having the excellent insulation property. A mold of the fireproof material for continuous casting of billet having a double structure minimizes a heat shock by a contact with the steel and a stopping effect of casting by a damage of the fireproof materials with a vibration of the mold.
Patent KR-20000043187-A (KR)
Title: Method for manufacturing mask of semiconductor device
Inventor: GU SANG SUL
IPC: H01L21/027
Filed: 1998-12-28
Abstract: PURPOSE: A method for manufacturing a mask of a semiconductor device is provided to monitor efficiently an equipment status or a process status by adding a mask monitoring box to a practical manufacturing mask. CONSTITUTION: A method for manufacturing a mask of a semiconductor device comprises the following steps. A mask monitoring box pattern is arranged on an edge portion of a mask. The mask monitoring box pattern is composed of a pattern for measuring overlap of patterns(11), a pattern for measuring an alignment rate(12), a pattern for measuring a line width difference of a slope pattern of 45 deg(13), and a pattern for measuring a closer(16). The mask monitoring box pattern is exposed, developed, and patterned selectively. Each parameter of the mask monitoring box pattern is measured to collect data. The collected data are monitored.
Patent KR-20000044290-A (KR)
Title: Method for attempting speech in mobile communication terminal
Inventor: CHO GANG HYEON
IPC: H04B1/38
Filed: 1998-12-30
Abstract: PURPOSE: A method for attempting a speech in a mobile communication terminal, is provided to perform a speech attempt without an input of an additional send-key after dialing a telephone number. CONSTITUTION: A method for attempting a speech in a mobile communication terminal, comprises the steps as follows. In a key data storage step, information on key data of key buttons, compressed corresponding to a telephone number for speech in a standby state, are stored. In a key button compressed state sending step, a compressed state of a key button, corresponding to predetermined key data to be stored, is sensed whether the state is maintained for a predetermined time, in a key data storage step. In a speech attempt step, a speech attempt is performed by dialing a telephone number corresponding to the stored key data information, when a key button maintaining a compressed state for over a predetermined time is sensed.
Patent KR-19990030452-A (KR)
Title: 암반굴착용 비트
IPC: E21B10/00
Filed: 1998-12-31
Abstract: 본 발명은 터널공사나  건축물기초공사시  지반을  뚫는  굴착기의 끝부분에  설치되어  굴착공사  진행중  나타나는  암반을  굴착하는  암반굴착용  비트에  관한 것으로,  특히  상기  암반굴착용비트를  구성하는  드럼저부에  설치되는  파쇄롤러군의  하단선  구조가  거의  평면에  가깝도록  설치하면서도  굴착작업시  비트가  좌,우로  흔들림이  거의  없이  항상  암반을  수직으로  뚫고  들어가도록  하고자  드럼의  중앙에  설치되는  한쌍의  중앙파쇄롤러를  몸체길이의  약1/3에  해당하는  하단외주연에  경사면을  형성하고  양측에  축결합부가  형성된  각각의  축받이에  경사면이  암반바닥면과  수평이  되도록  내측으로  경사지게  설치구성하여  상기  중앙파쇄롤러의  경사면에  내측으로  대응되는  힘을  작용토록  하여서  파쇄롤러가  외측으로  벌어지려고  하는  힘과  충돌하여  상쇄되도록  함으로써  축받이와  파쇄롤러에  가해지는  무리한  힘을  근본적으로  제거하여  파쇄롤러의  수명증가는  물론  전체  파쇄롤러군의  하단선  구조에  변형이  없도록  하여  굴착작업효율을  극대화하도록  한  것이다.
Patent KR-19990028904-A (KR)
Title: 기체상 화합물에 함유된 불순물을 제거하는 방법
Filed: 1996-05-13
Abstract: 본 발명은 기체상 화합물에 함유된 하나 이상의 일산화탄소 및 수소 불순물을 실질적으로 제거하는 방법에 있어서, 하기 (a) 내지 (c) 단계를 포함하는 것을 특징으로 하는 방법에 관한 것이다: 
     (a) 상기 기체상 화합물에 함유된 하나 이상의 일산화탄소와 수소 불순물을, (i) 금, 은 또는 금과 은, 및 (ii) 하나 이상의 백금족 금속의 입자들을 함유하고, 상기 입자들이 이산화티탄에 의해 지지되어 있는 촉매와의 접촉하에, 산소와 반응시켜서 이산화탄소와 물을 각각 형성시키는 단계; 
     (b) 적절한 경우에는, 상기 기체상 화합물로부터 이산화탄소 및 물을 제거하는 단계; 및 
     (c) 일산화탄소 및/또는 수소 불순물이 실질적으로 제거된 상기 기체상 화합물을 회수하는 단계.
Patent KR-19990043986-A (KR)
Title: 업무 인계 시스템
IPC: G06F11/00
Filed: 1997-06-19
Abstract: 본 발명은 업무 인계 시스템에 관한 것으로, 장해 발생 클러스터의 업무를 상시 대기의 클러스터에 인계하는 동시에 부하 분할의 클러스터의 업무마다의 부하 분할을 변경하고, 장해 발생시의 처리를 간단하고 또한 클러스터의 효율적인 운용을 실행하는 동시에 클러스터의 자유로운 배치를 실현하는 것을 목적으로 하고 있다.  그리고, 테이블에 따라서 업무 단위로 상시 대기의 현용계, 상시 대기의 대기계, 및 부하 분할중의 1개 또는 복수로 운용하는 복수의 클러스터와, 복수중 어느 하나의 클러스터에서의 장해 발생시에 테이블을 참조하여, 장해 발생 클러스터의 업무가 상시 대기의 현용계일 때 그 업무의 상시 대기 대기계의 클러스터가 인계, 또는 부하 분할일 때에 그 업무의 부하 분할의 다른 클러스터에 인계하는 수단을 각 클러스터에 구비하도록 구성된다.
Patent KR-19990044357-A (KR)
IPC: H04L1/00
Filed: 1997-06-10
Abstract: An apparatus for transmitting a digital information signal includes an input terminal for receiving the digital information signal, a first channel encoding unit for carrying out a first channel encoding step on an information word in a series of subsequent information words included in the digital information signal so as to obtain a channel word, a compression unit for carrying out a compression step on a channel word so as to obtain a compressed channel word, an error correction encoding unit for carrying out an error correction encoding of the compressed channel word so as to obtain a parity word, a second channel encoding unit for carrying out a second channel encoding step on the parity word so as to obtain a channel encoded parity word, and a formatting unit for combining the channel word and the channel encoded parity word into a composite transmission signal suitable for transmission via a transmission medium. With such apparatus, very long information words can be converted into channel words, while serious error propagation is avoided during transmission.
Patent KR-19990076755-A (KR)
IPC: C07D251/40
Filed: 1996-12-24
Abstract: A method for modifying 1,3,5-triazine derivatives characterized by reacting a 1,3,5-triazine derivative having at least one amino or monosubstituted amino group on any of the ring carbon atoms with an alcohol by heating in the presence of a metallic catalyst and hydrogen to thereby introduce an alkyl or alkenyl group into each amino or monosubstituted amino group; another method for modifying 1,3,5-triazine derivatives characterized by reacting a 1,3,5-triazine derivative having at least one amino or monosubstituted amino group on any of the ring carbon atoms with a dihydric alcohol by heating in the presence of a metallic catalyst and hydrogen to thereby introduce a hydroxylated alkyl group into each amino or monosubstituted amino group; and 1,3,5-triazine derivatives obtained by the methods. The various modified substituted 1,3,5-triazine derivatives thus produced are generally obtained as a mixture. These derivatives can be isolated as high-purity compounds by a general separation method for organic compounds, and the compounds are usable in the various applications mentioned in the specification. According to applications (for example, use as modifier additives, in particular a flame-retardant and a plasticizer for resins), the reaction mixture can be used as it is without being separated. Many of the substituted triazine derivatives obtained have been relatively difficult to synthesize or expensive. Since many of the derivatives are interesting with respect to their physical properties, e.g., solubility in water and in various organic solvents, high-temp. stability, melting point, boiling point, and basicity, they are thought to have a wider range of applications than conventional ones.