baber/WOPTO huggingface dataset:
Patent KR-20010048995-A (KR)
Title: Circuit of data output path in dram
Inventor: YANG TAE HEUM
IPC: G11C11/40
Filed: 1999-11-30
Abstract: PURPOSE: A circuit of data output path in a DRAM is provided to reduce a chip size and a current consumption by reducing the number of lines by using one global data line per input/output. CONSTITUTION: The circuit includes: a reference sense amp(110) outputting an output signal of the first logic to a reference global bus line by two global bus data inputted when a sense amp driving signal is in an active state; a reference global bus line precharge circuit part(120) precharging the reference global bus line after delaying it for a fixed time by the output signal of the first logic from the reference sense amp; n global data bus sense amps(112,114) outputting n output signals amplified by two global bus data inputted when the sense amp driving signal is in an active state to n global bus lines respectively; n global bus line precharge circuit parts(130,134) precharging each global bus line after delaying it for a fixed time by the output signal of the first logic from the reference sense amp; and n data latch circuit parts(140,144) storing each data loaded in the n global bus lines temporarily by the output signal of the reference sense amp. The output signal of the first logic has a low voltage level.
Patent KR-20010054252-A (KR)
Inventor: CHOI SANG IL
IPC: H04B1/40
Filed: 1999-12-04
Abstract: PURPOSE: A high-linear high power amplifier in a mobile communication system is provided to maintain a high linearity in a high power state by removing inter-modulation distortion components, generated in amplifying high power, using an error generator. CONSTITUTION: A high-linear high power amplifier in a mobile communication system consists of the first loop(23-26,34-38), the second loop(27-28,42-44), and the third loop(30-31,45-47). The first loop(23-26,34-38), dividing an input signal into two, outputs the first amplification signal by amplifying one of the divided signals and generating an error. For the other divided signal, the first loop(23-26,34-38) executes attenuation and phase control, combines it with the first amplification signal, and outputs the first distortion signal free of carrier wave components. The second loop(27-28,42-44) delays the first amplification signal for a given time, executes attenuation and phase control for the first distortion signal, combines the time-delayed signal with the first distortion signal, outputs a pure carrier wave signal. The third loop(30-31,45-47) executes attenuation and phase control for the first distortion signal outputted from the first loop(23-26,34-38), combines it with the pure carrier wave signal, amplifies the combined signal at a high power, and outputs the high power amplified signal.
Patent KR-20010055804-A (KR)
Inventor: CHAE HONG GUK
IPC: C23C2/00
Filed: 1999-12-13
Abstract: PURPOSE: An apparatus for controlling preventing cyma of steel sheet in hot dip plating process is provided which properly controls magnetism of each electromagnets so that the size of the cyma is minimized using distance values from three positions to the measured steel sheet by installing eddy current distance sensors and electromagnets at both sides of the front and back surfaces of the steel sheet in a width direction with spaced apart from each other in a certain distance. CONSTITUTION: The apparatus comprises eddy current distance sensors (21a,21b,21c) installed on the upper part of a right side air knife (3) with spaced apart from each other in a certain distance; an electromagnet (22b) installed at the same position as the center eddy current distance sensor (21b); electromagnets (22a,22c) installed on the upper part of a left side air knife (3'); and a cyma operator (23) and a cyma controller (24), wherein the electromagnets (22a,22b,22c) are connected to the eddy current distance sensors (21a,21b,21c) by passing through the cyma operator (23) and the cyma controller (24) in order.
Patent KR-20010056482-A (KR)
Inventor: BAEK SEUNG YEOP
IPC: G01R31/24
Filed: 1999-12-15
Abstract: PURPOSE: A connection box PD modeling test apparatus is provided to confirm an inner assembly state by making an epoxy seat with a transparent acryl and secure the confirmed assembly state and a PD test result at the same time. CONSTITUTION: A transparent acryl seat(34) has the same inner structure as a conventional epoxy seat. A lower electrode(40) is fixed to the first flange(36) that is joined with the second flange(38). The first flange(36) fixes the lower electrode and supports the transparent acryl seat. The second flange(38) supports the transparent acryl seat together with the first flange and is joined with the third flange(44). The third flange(44) is joined with the second flange and connects an assembled device to a test tank. A high-pressure shield ring(50) is formed at a position where the test tank(26) is installed. The shield ring(50) is attached closely with a cable conductor(56) and a through groove(58) and functions as a high-pressure electrode.
Patent KR-20010056223-A (KR)
Inventor: KIM DO GYUN
IPC: D01F6/62
Filed: 1999-12-18
Abstract: PURPOSE: A process of preparing polyester fiber capable of dyeing at low temperature and having a tone effect by blending polyethylene terephthalate and polytrimethylene terephthalate, spinning and controlling a drawing rate, drawing temperature and heat treating temperature is provided. Whereby, polyester fiber having excellent multi-color dyeing effect and softness is obtained. CONSTITUTION: The titled polyester fiber is prepared by spinning a blend of 70 to 95% by weight of polyethylene terephthalate having an intrinsic viscosity of 0.60 to 0.65 and 30 to 5% by weight of polytrimethylene terephthalate having an intrinsic viscosity of 0.80 to 1.0 under conditions of an elongation of 45% or more, a first godet roller temperature of 50 to 70deg.C and a second godet roller temperature of 100 to 150deg.C.
Patent KR-20010064766-A (KR)
Inventor: JUNG WON YEONG
IPC: H04L9/14
Filed: 1999-12-18
Abstract: PURPOSE: An authentication and key setting method in a radio communication system is provided which uses an open key method for mutual authentication and generation of temporary secret key to facilitate key management and to allow different authentication organizations to use open key authentication notes. CONSTITUTION: In an authentication and key setting method applied to a radio communication terminal, a random number generated by the terminal is encoded with an open key of a network and transmitted to the network together with the identifier of an authentication organization of the terminal according as a new location of the terminal is registered or not. A value obtained by encoding the random number generated by the terminal with a temporary secret key and a random number generated by the network are received from the network together with an authentication note chain for the open key of the network authentication organization to authenticate the network. The terminal generates a signature of the terminal, and the identifier of the terminal or open key authentication note of the terminal is encoded with the temporary secret key to be sent to the network.
Patent KR-20010062903-A (KR)
Inventor: RYU HO YEONG
IPC: H01F38/42
Filed: 1999-12-21
Abstract: PURPOSE: A ferrite core of a fly back transformer is provided to easily discharge a high heat and prevent a leakage magnetic flux from being leaked to the outside of a ferrite core by forming a gap of a semicircular groove. CONSTITUTION: An FBT has high and low tension bobbins thereinside. A ferrite core(3) is divided into an upper part and a lower part and formed on a side of a case of the FBT. An elastic U-clip is coupled with one side of the ferrite core(3). An FBT ferrite core fixedly supports the ferrite core(3). An end of the ferrite core(3) is inserted into an inside of the low tension bobbin of the FBT. Grooves(5) are formed on contact surfaces of the upper side core(3a) and a lower side core(3b) of the ferrite core(3). A gap(6) is formed between the upper ferrite core(3a) and the lower ferrite core(3b). The grooves formed on the contact surfaces of the upper side and lower side cores(3a,3b) of the ferrite core(3) are semicircular shaped. An electromagnetic wave interference is minimized with the aid of the semicircular shaped grooves.
Patent KR-20000012737-A (KR)
Inventor: LEE YEONG GYUN
IPC: H01L21/56
Filed: 1999-12-22
Abstract: PURPOSE: A molding apparatus for semiconductor package mold is provided to prevent a fail due to an incline of a plunger plate by moving the plunger plate up and down with maintaining horizontality. CONSTITUTION: The molding apparatus comprises a base(2), a cavity block(4, 6) formed on the base(2), in which a plural cavity(8) and resin supplying port(10) are formed, a plunger(12) formed in the resin supplying port(10), a plunger plate(14) formed between the base(2) and the cavity block(4, 6) for moving up and down, on which the plunger(12) is connected with, a cylinder(16) for moving up and down the plunger plate(14), a plural link(24, 26) for connecting the base(2) and the plunger(12), and a connection rod(28) for clutching identically each link(24, 26).
Patent KR-20010057750-A (KR)
Inventor: LEE KI HONG
IPC: E02D5/28
Filed: 1999-12-23
Abstract: PURPOSE: An H-section steel pile head stiffening device is provided to promote the convenience for use on a construction site, to distribute bracing stiffness evenly, and to enhance stiffness. CONSTITUTION: An H-section steel pile head stiffening apparatus comprises: a stiffening part provided with many screw holes(11) formed on the upper edge of a square plate(1), a flange whose H-shaped lower face is extended vertically to correspond to the inner edge of a H-beam and a fitting hole formed to couple the flange to a flange face(100F) forming a H-section steel pile head(100); and reinforcing bars(20) whose lower ends coupled to the screw holes of the stiffening part composed of screw threads(21).
Patent KR-20010064272-A (KR)
Inventor: CHO NAM SEONG
IPC: D02G3/00
Filed: 1999-12-27
Abstract: PURPOSE: Provided is a light multi functional hollow conjugated fiber having excellent elastic property owing to containing a polymer having high elastic property and excellent melange effect owing to being comprised of two kinds of polymers having different dyeing property. CONSTITUTION: In the conjugated fiber, basic dyes dyeing copolymerized polyester polymer(A) is adhered to polyethylene terephthalate or copolymerized polyester polymer(B) having high elastic property. The hollow part(C) is formed on a cross section. Hollow rate of the hollow part(C) is over 10%. Composition rate(A:B) of the basic dyes dyeing copolymerized polyester polymer(A) and the polyethylene terephthalate or copolymerized polyester polymer having high elastic property(B) is 20 : 80 - 80 : 20.
Patent KR-20010060554-A (KR)
Inventor: SHIN GYE WAN
IPC: G11C8/10
Filed: 1999-12-27
Abstract: PURPOSE: An initial bias generating circuit using a programmable cell is provided to prevent mask variation by controlling the initial bias according to the status of a programmed cell and by enabling initial bias control from outside. CONSTITUTION: The initial bias generating circuit using the programmable cell includes a plurality of cells(10,20), a decoder(30) and a bias voltage source. The cells store the data for assigning initial biases for assigning the initial bias for a multi-level flash memory. The decoder decodes the cell signals to generate particular initial bias voltage enable signal. The bias voltage source outputs one of plurality of voltages according to an output signal of the decoder. The decoder further includes the first inverter inverting the first cell signal, the second inverter inverting the second cell signal, the first NAND gate receiving the output signals of the first and second inverters, the second NAND gate receiving the first cell signal and the output signal of the second inverter, the third NAND gate receiving the second cell signal and the output signal of the first inverter, the forth NAND gate receiving the output signals of the first and second cells, the third inverter generating the first output signal by inverting the output signal of the first NAND gate, the forth inverter generating the second output signal by inverting the output signal of the second NAND gate, the fifth inverter generating the third output signal by inverting the output signal of the third NAND gate, and the sixth inverter generating the forth output signal by inverting the output signal of the forth NAND gate.
Patent KR-20010060870-A (KR)
Inventor: RYU JEONG HUN
IPC: H04B7/216
Filed: 1999-12-28
Abstract: PURPOSE: A device and a method for processing a duplexing and QoS(Quality of Service) sublayer of a CDMA(Code Division Multiple Access) communication system are provided to enable the multiplexing and QoS sublayer of an MAC(Medium Access Control) layer to receive a signaling message for multiplexing. CONSTITUTION: A buffer unit(200A) having buffers(210,220,230,240) stores a signaling message frame transmitted from an upper layer. A multiplexing processor(200C) divides the signaling message frame appropriately for each physical layer frame data rate, and multiplexes the divided signaling message frame and a data frame, to generate physical channel frames. And transmission buffers(250,260,270) store each physical channel frame generated by the multiplexing processor(200C) for transmission.
Patent KR-20010064323-A (KR)
Inventor: KIM DONG SEOK
IPC: H01L21/76
Filed: 1999-12-29
Abstract: PURPOSE: A method for forming an isolation layer of a trench structure in a semiconductor device is provided to improve efficiency of an isolation process by enlarging an edge rounding effect of a trench. CONSTITUTION: A pad oxide layer and a nitride layer are formed on a semiconductor substrate(100). A photoresist pattern is formed on the nitride layer. The laminated nitride layer and the pad oxide layer are patterned according to the photoresist pattern. A shallow isotropic trench(108a) is formed by performing an isotropic dry etching process. An anisotropic trench(108b) is formed on within the substrate(100) in order to define an isolation region. The photoresist pattern is removed. A gap fill layer is formed within the trench. The nitride layer is removed and an isolation layer is formed thereon.
Patent KR-20010058894-A (KR)
Inventor: KIM SA HYEON
IPC: H03M1/12
Filed: 1999-12-30
Abstract: PURPOSE: An A/D converter is provided to increase the number of resolution bits employing a simple extra structure and thus to downsize the configuration of the ladder and decoder. CONSTITUTION: In the A/D converter, a PMOS transistor(470) passes the analog input voltage(AVref) when the control signal(ADEN) is low, a ladder(430) produces a reference voltage using the analog input voltage(AVref). A compensator(410) produces a reset bit(Rbit) by amplifying the difference between an analog input signal(AIN) and the reference voltage(Vref). A shift register(460) produces an enable signal(en). An address register(450) stores the address(ADR(9:0)) forced by the enable signal. A decoder(420) maintains the conversion block of the ladder(430) as low sequentially. A column decoder(440) selects an output reference voltage(Vref) among converted values at the ladder(430). A D/A converter(480) supplies a voltage(Vc) for the comparator(410).
Patent KR-20010059442-A (KR)
Inventor: KIM JAE UK
IPC: H04L9/00
Filed: 1999-12-30
Abstract: PURPOSE: A device of analyzing the operation of a security system and a method thereof are provided to check the security system by generating test packets to verify the possible intrusion. CONSTITUTION: In the device of analyzing the operation of a security system, a test vector generator(131) generates an adequate test vector using a security policy from a scheduler(133). For example, the generator(13) can generate a vector to gain access to Host A and sends the vector via a transmission module(12). A result analyzing unit(132) checks whether there is any response after the test vector was sent by the test vector generator(131). A scheduler(133) realizes the security polices of the security system periodically based on a security management database(11).
Patent KR-20010060147-A (KR)
Inventor: KANG MUN SEOK
IPC: H04B1/40
Filed: 1999-12-31
Abstract: PURPOSE: An automatic recognition apparatus for an external accessory of a mobile radio terminal is provided so that the mobile radio terminal can automatically recognize the connection of an external accessory. CONSTITUTION: An interface unit(40) is contacted with an accessory. A sensing signal generation unit(20)(R1,R2) generates a connection sensing signal if the interface unit(40) is contacted with the accessory. A type sensing unit(R3)(30) is driven by a read signal and outputs a type sensing signal representing the type of the accessory. A control unit(CPU) generates the read signal upon receipt of the connection sensing signal and decides the type of the accessory by comparing the type sensing signal with a prestored value.
Patent KR-20000029830-A (KR)
Inventor: HUVER MIHAEL
IPC: G06K19/077
Filed: 1997-07-14
Abstract: PURPOSE: A chip card, its manufacturing method and a semiconductor chip used in the chip card are provided to endure a bending load and simplify component arrangements rather than a conventional chip module. CONSTITUTION: A chip card comprises a card body(1), a cavity(2), a plurality of contact surfaces(3), a semiconductor chip(4) and contact terminal(11). The contact surfaces(3), made of electric conduction material, is electrically contacted to the contact terminals(11) assigned to an electronic circuit formed on a semiconductor base plate(10) of the semiconductor chip(4). The contact surface(3) is manufactured on a main surface of the semiconductor chip(4) directing toward a coating type electronic circuit, and the semiconductor chip(4) is fixedly inserted into the cavity(2) of the card body(1) to make the contact surface(3) extended in the same plane of an external surface(7) of the card body(1).
Patent KR-20000068681-A (KR)
Title: 적응제어렌즈를 사용한 현미경
IPC: G02B21/00
Filed: 1998-07-31
Abstract: 본 발명은 관찰비임내에 적응제어렌즈를 지니고, 투과식 웨이브 프론트 모듈레이터가 대물렌즈와 튜브렌즈 사이에 유용하게 위치되어 있거나 또는 반사식 웨이브 프론트 모듈레이터가 광선분배기에 설치되어 있는 현미경에 관한 것이다. 
     본 발명은 또한 조명비임에 적응제어렌즈가 설치된 현미경에 관한 것이다. 
     본 발명은 더욱 광학비임내 레이저로부터 아래쪽에 설치되고 최소한 하나 이상의 적응제어렌즈를 지니며, 바람직하게는 첫번째 적응제어렌즈는 거칠게 초점을 조절하고 두번째 적응제어렌즈는 미세하게 초점을 조절하는 레이저 스캐닝 현미경에 관한 것이다. 여기서 적응제어렌즈는 반사식 웨이브 프론트 모듈레이터로 구성되고 레이저 광원으로는 단펄스 레이저를 사용한다. 그리고 여기에 프리치르프 유닛을 조합할 수 있다.
Patent KR-20000062282-A (KR)
Title: 카르보닐 화합물의 제조 방법
IPC: C07C47/127
Filed: 1997-12-09
Abstract: 본 발명은 하기 화학식 (I)의 카르보닐 화합물의 제조 방법에 관한 것이다. 상기 방법에 따르면, 카르보닐 화합물은, 구리 및(또는) 은을 함유하는 촉매, 및 반응 조건하에 휘발성이고 사용되는 알콜의 중량부에 대해 인의 중량 (P로 계산됨)이 20 ppm 이하인 양으로 존재하는 인 화합물의 존재하에 산소를 함유하는 가스로 메탄올 또는 하기 화학식 III의 알콜을 기상 산화시키므로써 제조된다.  상기 방법은 사용되는 인의 양이 a) 제1 부분은 촉매층 전의 가스 출발 물질의 혼합물과 함께 첨가되고, b) 하나 이상의 다른 부분은 촉매층에 첨가되는 2부분 이상으로 첨가되는 것을 특징으로 한다. 
     〈화학식 I〉 
     
       
     
     상기 식에서, R 1 은 수소 원자 또는 탄소 원자 1 내지 3개의 알킬 라디칼이고, R 2 는 수소 원자 또는 하기 화학식 II의 라디칼이다. 
     〈화학식 II〉 
     
       
     
     상기 식에서, R 3 은 수소 원자이거나 또는 R 4 와 함께 산소 원자이고, R 4 는 라디칼 OR 6 이거나 또는 R 3 과 함께 산소 원자이며, R 5 는 수소 원자, 탄소 원자 1 내지 8개의 알킬 라디칼 또는 시클로헥실 또는 시클로펜틸 라디칼이고, R 6 은 탄소 원자 1 내지 4개의 알킬 라디칼, 시클로헥실 또는 시클로펜틸 라디칼 또는 화학식 -CH 2 -CHO 또는 -CH 2 -CH 2 -O-CH 2 -CHO의 라디칼이다. 
     〈화학식 III〉 
     
       
     
     상기 식에서, R 1 및 R 5 는 상기 특정된 의미를 가지고, R 7 은 수소 원자 또는 라디칼 OR 8 이며, R 8 은 수소 원자, 탄소 원자 1 내지 4개의 알킬 라디칼, 시클로헥실 또는 시클로펜틸 라디칼 또는 화학식 -CH 2 -CH 2 -OH 또는 -CH 2 -CH 2 -O-CH 2 -CH 2 -OH의 라디칼이다.
Patent KR-20000070760-A (KR)
Title: 당뇨병성 합병증의 예방에 치료적으로 개입하는 화합물 및 방법
IPC: C07H19/20
Filed: 1998-02-05
Abstract: 새로이 발견된 대사 경로중 ATP 의존성 반응에서 프럭토오스-리신으로부터 프럭토오스-리신-3-포스페이트로의 효소적 전환을 저해하는 부류의 화합물이 본원에 개시되어 있다. 이 경로상의 정상적인 작용에 따라, 프럭토오스-리신-3-포스페이트(FL3P)는 분해되어 유리 리신, 무기 인산염 및 3-데옥시글루코손(3DG)을 형성하며, 후자는 반응성 단백질 개질제이다. 3DG는 3-데옥시프럭토오스(3DF)로의 환원에 의해 탈독성화될 수 있거나, 내인성 단백질과 반응하여 진행성 최종 당화 산물에 의해 개질된 단백질(AGE-단백질)을 형성할 수 있는데, 상기 AGE-단백질은 당뇨병성 합병증을 유발하는 것으로 생각된다. 또한, 상기 저해제를 사용하여 AGE-단백질의 형성을 감소시킴으로써 당뇨병성 합병증을 예방, 감소 및 지연하는 치료 방법 및 당뇨병 환자가 합병증을 발병시킬 위험을 평가하는 방법과 경구 용량의 프럭토오스-리신을 함유하는 식이 생성물을 섭취한 후 생물학적 샘플중 3DG 대 3DF의 비를 측정함으로써 개시된 저해제 치료의 효능을 측정하는 방법을 개시한다.
Patent KR-20000070782-A (KR)
IPC: C09D151/00
Filed: 1998-02-04
Abstract: 수용액 에멀션은 2단계 중합공정으로 제조된다.  제1 단계에서는, 낮은 Tg 고분자를 발생시키는 모노머가 중합되는 반면, 제2 단계에서는 높은 Tg 고분자를 발생시키는 모노머가 중합된다.  상기 단계 중 하나 또는 모두에 있어서, 적어도 2개의 카르복실 또는 카르복실레이트 그룹을 갖는 모노머가 모노머 혼합물의 부분을 형성한다.  결과되는 고분자는 특히 코팅 조성물에 유용하고, 상기 고분자는 상기 코팅 조성물에 블로킹 내성 및 스크럽 내성의 우수한 결합 효과를 제공한다.
Patent KR-20000071026-A (KR)
Title: 코딩 시스템내에서 속도 제어를 최적화하기 위한 장치 및 방법
IPC: H04N19/147
Filed: 1998-02-11
Abstract: 코딩 속도를 최적화하기 위하여 각 프레임에 대한 양자화 비율(quantizer scale)을 선택하기 위한 장치 및 방법[100,300]에 관한 것이다.  양자화 비율이 각 프레임에 대하여 선택되어, 전체 프레임들의 시퀀스에 걸쳐 일정한 화질을 유지하면서 상기 프레임에 대한 목표 비트 속도가 달성된다.
Patent KR-20000075458-A (KR)
IPC: G10K15/04
Filed: 1998-12-18
Abstract: A nondestructive bond testing system is implemented using a pulse laser that sends a single or multiple pulse(s) of controlled magnitude and bombards an object of interest causing a thermoelastic excitation response. This excitation in turn induces an ultrasonic propagation along or through the surface material. By detecting, capturing and interpreting these thermoelastic propagation signatures, the attachment condition of the joining materials is determined. The technique is a significant improvement over traditional mechanical pull, shear or contact type techniques. The techniques are implemented in automated high speed inspection systems suitable for real time manufacturing application. Particular applications include evaluating material joining in microelectronics manufacture (such as ball bonds) and thin coating processes.
Patent KR-20000076288-A (KR)
Title: 항균성 치환 7-아실아미노-3-(메틸히드라조노)메틸-세팔로스포린 및 중간체
IPC: C07D501/46
Filed: 1998-04-01
Abstract: 화학식 (I)의 화합물 및 그의 제조 방법 및 이들의 의약으로서의 용도. 
     〈화학식 I〉 
     
       
     
     식 중, 
     W, V, R 1 , R 5 , R 2 , R 3 , 및 R 4 는 다양한 의미를 가진다.
Patent KR-20010012071-A (KR)
Title: 화상 시퀀스의 부호화 방법 및 장치
IPC: G06T9/00
Filed: 1999-02-11
Abstract: 본 발명은 비디오 인코더에서 인간의 시각 시스템(HVS)의 사용에 관한 것이다. 부호화 방법 및 장치에서 화상의 각 영역에 대해 인간의 눈이 더욱 민감한지 덜 민감한지에 따라 각각 현재 화상에 걸쳐 비트 할당이 효과적으로 수정될 것이 제안된다, 상기 재할당을 보면, 소위 특정한 지각 계수들의 계산이 제안되어 인코더의 전체적인 전송 속도 제어 동작이 수정되지 않는 한도내에서 향상된 영상의 질을 얻을 수 있다.
Patent KR-20010020175-A (KR)
Title: 알킬 포스포네이트를 함유하는 동력 전달 유체
IPC: C10M101/00
Filed: 1998-03-19
Abstract: 동력 전달 유체, 구체적으로 자동차 전동 유체의 떨림 방지 내구성은, 알킬 포스포네이트, 무회 분산제 및 금속성 청정제의 혼합물을 혼입시킴으로써 개선된다.
Patent KR-20010012467-A (KR)
Title: 액정 배향제
IPC: C08G73/10
Filed: 1998-03-19
Abstract: 본 발명은 하기 화학식 1로 나타내어지는 화학 구조를 갖는 폴리이미드 전구체를 수지 성분으로 함유하는 액정 배향제를 제공한다; 
     [화학식 1] 
     
       
     
     본 발명은 상기의 폴리이미드 전구체 및 하기 화학식 2에 의해 나타내어지는 폴리이미드 전구체를, 필수 성분으로 함유하는 액정 배향제를 추가로 제공한다; 
     [화학식 2] 
     
       
     
     (식 중, Y는 4가의 지방족 기를 나타내고, Z는 2가의 방향족 기를 나타내며, R은 H 또는 알킬 기를 나타낸다).
Patent KR-20010013018-A (KR)
Inventor: YU THOMAS CHEN-CHI
IPC: C08L23/16
Filed: 1998-05-28
Abstract: This invention relates to thermoplastic olefin compositions of a low modulus which are suitable for fabrication into flexible skins and liners for applications which heretofore have been serviced by skins and liners produced essentially only from plasticized polyvinyl chloride resin compositions. TPO compositions of this invention comprise an impact modified polypropylene resin and a "plastomer" resin intimately blended in proportions with respect of one to another to provide a blend composition having a 1 % secant modulus of less than 40,000 psi, and preferably less than 30,000 psi. Optionally, and preferably, the blend also comprises as a discrete component apart form the impact modified polypropylene an olefin copolymer elastomer or a cross- linked elastomer concentrate. Optionally the blend may contain other polyolefin components to alter its stiffness in desirable ways. In addition to the olefin based polymer components, the blend may further comprise, and preferably does comprise, a coupling agent and a