baber/WOPTO huggingface dataset:
Patent KR-20090022176-A (KR)
Title: The towing device for a carrier
Inventor: JEONG KI WON
IPC: B62K5/08
Filed: 2007-08-29
Abstract: A carrier towing device is provided to increase the supporting force for driver's seat by using an auxiliary support and to allow the driver to tow the carrier in the desired direction more efficiently. A carrier towing device includes a towing unit(20) which can rotate 360° on a guide ring member(10) fixed to a front frame(102) of a carrier(100). The towing unit comprises a rotating member(30) rotating to the desired direction on the guide ring member, and a towing member(40) generating power on the rotating member to tow the carrier.
Patent KR-20090022272-A (KR)
Title: Structure of a turbo blower which can reduce an axial load
Inventor: KIM DONG KWON
IPC: F04D29/00
Filed: 2007-08-30
Abstract: A structure of a turbo blower decreasing the load of the axial direction is provided to improve durability and to be possible for stable operating of the turbo blower by reducing the load of axial direction. A structure of a turbo blower decreasing the load of the axial direction comprises an impeller(20) installed in an inside of casing(90), an opening(98) connected with the front of impeller, a blower unit(80) including a blast pipe(88) in the inside, a link path(84) connected to the blast pipe of the blower unit, and a connection pipe(200) connecting the front space of impeller and the rearward space.
Patent KR-20090022431-A (KR)
Inventor: JIN HEE JONG
IPC: G06Q30/06
Filed: 2007-08-30
Abstract: A shopping and an application service using a program which manufactures visual products are provided to maximize the satisfaction of a customer and minimize the disadvantage of internet shopping. Product information is stored on a web linked with a program providing one online service based on offline. A user purchases product by comparing with various products. A visual coordination program having visual and the various functions is used. The various and individualized services having a flow operation in which the internet shopping program is implemented are provided. A technology scrapping the information of the product is used.
Patent KR-20090024389-A (KR)
Title: Making method of thermostability sheath composite for welding cable
Inventor: HUR SOO BUM
IPC: C09D125/06
Filed: 2007-09-04
Abstract: A method for manufacturing coating compositions is provided to employ thermoplastic rubber which does not generate dioxins in order to realize high elasticity, workability, and heat resistance with no dioxin. A method for manufacturing coating compositions comprises a 100 part of composition(A), a 100 part of composition(B), a 15-25 part of ethane-1,2-bis(pentabromophenyl) as a flame retardant, and a 5 part of 3-antimony trioxide by weight. The composition(A) is manufactured by mixing a 100 part of block copolymer having a polystyrene-b-poly(ethylene/butylene)-b-polystyrene structure, 0.1-0.3 part of vinylmethoxysilane, and a 0.01-0.02 part of dicumylperoxide by weight. The composition(B) is manufactured by mixing a 100 part of block copolymer having a polystyrene-b-poly(ethylene/butylene)-b-polystyrene structure, a 0.01 part of dibutyltin dilaurate, and a 1-3 part of antioxidant by weight.
Patent KR-20090025810-A (KR)
Title: 반도체 소자의 형성 방법
Inventor: KIM SEI JIN
IPC: H01L21/027
Filed: 2007-09-07
Abstract: 본 발명은 반도체 소자의 형성 방법에 관한 것으로, 고집적 반도체 소자의 미세 패턴을 형성하는데 있어서, 감광막 마스크 패턴의 종횡비가 증가하여 쓰러짐 현상이 발생하고 공정 마진이 감소하는 문제를 해결하기 위하여, 감광막 하부의 하드마스크를 산화막으로 사용하고, 하드마스크 패턴 형성을 위한 식각 공정을 CF 4  및O 2 의 혼합 가스를 이용하여 실시함으로써, 감광막 및 하드마스크 산화막의 식각 선택비를 개선시키고, 감광막의 두께를 감소시켜 반도체 형성 공정 수율 및 신뢰성을 향상시킬 수 있도록 하는 발명에 관한 것이다.
Patent KR-20080076680-A (KR)
Inventor: LEE HARK JIN
IPC: F03G3/00
Filed: 2007-09-10
Abstract: A gravity rotating device is provided to help various industrial machines like a press and to drive a generator by installing multiple rotators comprising two fixing plates, two rotating arms, a connecting plate, and a rotating plate. A gravity rotating device comprises multiple rotators(2) arranged at a rotation axle(1) supported longitudinally to a guide wall of a semicircular shape. Each rotator comprises two fixing plates(2a,2b), two rotating arms(3,3a), a connecting plate(4), and a rotating plate(17). The fixing plate has two connecting holes at both ends respectively, and one fixing plate is connected to the other fixing plate to be deviated. The connecting plate and the rotating plate are hinge connected to the rotating arm between the fixing plates. The fixing plate is connected with a pin(12) at both sides of the rotating arm. A spring is connected to the fixing plate at both sides of the connecting plate. A roller(6) contacts the guide wall with rolling friction.
Patent KR-20080087629-A (KR)
Title: Optical source device and exposure device using the same
Inventor: SHIRAI TETSUYA
IPC: H01L21/027
Filed: 2007-09-28
Abstract: An optical source device and an exposure device using the same are provided to irradiate continuously light for a long time by forming uniformly the illumination of the light. A lamp unit(18) includes a reflector formed in each of discharge lamps to reflect the light irradiated from each discharge lamp to the same direction, and an abnormal state determination unit(28) for measuring a voltage applied to each discharge lamp, determining an abnormal state of each discharge lamp on the basis of the measured voltage, and outputting an abnormal signal(S3) according to the abnormal state of each discharge lamp. A control unit(22) turns on/off each discharge lamp, interrupts the power applied to the discharge lamp of the abnormal state on the basis of the abnormal signal, and applies the power to an auxiliary discharge lamp.
Patent KR-20090012988-A (KR)
Title: Method and apparatus for managing device revocation list
Inventor: AHN DAVE
IPC: G06Q50/10
Filed: 2007-10-08
Abstract: A client revocation list management method and apparatus are provided to use a two-way protocol in the environment which is unable to verify client revocation, thereby safely controlling contents transmitted from a server to a client. A client receives a first client revocation list from a server(205). The client checks an electronic signature included in the first client revocation list(210). If the electronic signature is not right, the reception of the client revocation list is terminated(215). The client compares the version of the first client revocation list received from a server with the version of an existing client revocation list stored in the nonvolatile memory of the client(220). If the version of the first client revocation list received from the server is lower than that of the version of a second client revocation list stored in the nonvolatile memory, the reception of the client revocation list is terminated(225). The client records the first client revocation list in the nonvolatile memory of the client(230).
Patent KR-20090036719-A (KR)
Title: Lower hinge structure
Inventor: DO MAN SUNG
IPC: F25D23/00
Filed: 2007-10-10
Abstract: A lower hinge structure for a door is provided to simplify position control of a door and prevent height difference of the door by easily assembling the lower hinge and controlling position. A lower hinge structure comprises a lower hinge body(20) having a plate shape which is curve-cut and being installed at the bottom of a main body. A lower hinge shaft(30) is assembled to pass through the lower hinge body and is protruded vertically toward the lower hinge body. A guide(40) is fixed to a door with being inserted into the lower hinge shaft. The lower hinge shaft comprises: a fixing protrusion(31) protruded in the middle of the outer circumference; a rotating unit(32) adjacent to the fixing protrusion; and a fixing member(50) which is detachable.
Patent KR-20090038203-A (KR)
Title: Connector unit
Inventor: PARK JONG SIK
IPC: H01R12/71
Filed: 2007-10-15
Abstract: A connector unit is provided to prevent wrong wiring by including the left and right terminals differently even though wirings are changed during electricity wire connection. A female member(20) includes a housing(26), which is coupled to a male member(40), and a terminal unit connected to a circuit formed at a PCB(Printed Circuit Board) by being included at an inner portion of the housing. An upper plane of the housing is formed in a rectangular parallelepiped shape, and a holding recess(27) which holds the some portion of the male member is formed at an opened inner portion of the housing. The holding recess is formed at a shape corresponding to an insertion unit(43) of the male member, and a corner of the holding recess forms a tapered unit(28). The male member is made of an insulator, and includes a plug housing(42), which is coupled to the female member, and a terminal coupling unit(46) which is coupled to the terminal unit.
Patent KR-20090038768-A (KR)
Title: Scanning electron microscopy having a realtime measuring function and realtime measuring method
Inventor: KIM HEUNG BOK
IPC: H01J37/26
Filed: 2007-10-16
Abstract: A scanning electron microscopy having a real time measuring function and a real time measuring method is provided to allow a user to observe easily by measuring the size of the sample in real time from an image. An image of sample is outputted to an output device(S10), and an object to be measured is inputted(S20). The measurement target is one of a straight distance, a rectangular area, an oval area, a non-linear distance, and the circumstance of the closed trace. A measured value of the inputted measurement target is counted(S30), and the measured value of the calculated measurement target is outputted on the outputted image(S40), and the image of result is stored.
Patent KR-20090041130-A (KR)
Title: Method for controlling celo for a vehicle
Inventor: SUNG NAK SUP
IPC: F02N99/00
Filed: 2007-10-23
Abstract: A heating operating control method for vehicle is provided to control a heating system relative the demand of a passenger and a vehicle condition without a cooling water temperature sensor. A heating operating control method for vehicle classify a negligence level of the vehicles relative to a complete negligence, a partial negligence, and non negligence based on the condition of the outside temperature and the room temperature. According to each negligence level, an execution level of the heating operating control is distinguished. In case of the non negligence, the heater operating control is not enforced. In case of the complete and partial negligence, the heater operating control is enforced. The running time longer the outside temperature low if the heater operating control operates. The running time is longer in case of the complete negligence than the partial negligence in the identical condition of outside air temperature and the room temperature.
Patent KR-20090041739-A (KR)
Inventor: KIM DONG HUN
IPC: A61J9/00
Filed: 2007-10-24
Abstract: 본 발명은 평상시 어린아이가 젖꼭지를 빨지 않을 경우 플렉시블 윙이 탄성적으로 펼쳐져 홈의 형상을 자연스럽게 유지하면서 용기 입구의 테두리에 안착되도록 하여 우유의 새는 현상을 방지할 수 있도록 하고, 어린아이가 젖꼭지를 빨 경우에는 플렉시블 윙이 홈에 압착됨과 동시에 외부로부터 공기가 유입될 수 있도록 하여 용기 속에 내장된 우유가 구멍을 통하여 자연스럽게 배출될 수 있도록 한 젖병에 관한 것이다. 
       
     젖병, 젖꼭지, 플렉시블 윙
Patent KR-20090043080-A (KR)
Inventor: KIM JAE SUNG
IPC: A61C8/00
Filed: 2007-10-29
Abstract: 픽스쳐와 어버트먼트를 서로 결합시키는 체결나사가 풀리는 것을 방지하도록 
     어버트먼트의 내부 중공에 삽입 고정되는 임플란트의 나사풀림 방지마개이다.  
     나사풀림 방지마개는 원형 실린더 형상으로 형성되어 어버트 
     먼트의 내부 중공에 삽입되며, 저면에는 픽스쳐와 어버트먼트를 체결시키는  
     체결나사 헤드부의 각형홈에 삽입 결합되는 각형돌기가 형성되며, 상기 바디의 
     상면 표면에 보철물과 맞물려 회전을 방지해주는 돌기나 홈 또는 돌기와 홈의 
     결합형태가 형성된 임플란트 나사풀림 방지마개이다.  
       
      임플란트, 어버트먼트, 픽스쳐, 바디, 나사풀림방지
Patent KR-20090043346-A (KR)
Inventor: SEO WON SUN
IPC: H01L21/66
Filed: 2007-10-29
Abstract: 본 발명은 텅스텐 게이트의 동작 특성에 큰 영향을 미치는 베리어 메탈의 특성을 셀에서 사용하고 있는 리세스 채널을 이용하여 기존 공정을 그대로 진행하면서 평가할 수 있도록 구성한다. 따라서, 베리어 메탈의 계면 특성을 정확하게 측정할 수 있기 때문에 새로운 물질 도입 및 평가를 용이하게 수행하고, 측정하려는 테스트 패턴의 크기를 실제 사용하는 셀 트랜지스터의 구조에 맞추어 자유롭게 변경할 수 있기 때문에 크기에 따른 영향도 정확하게 측정할 수 있는 기술을 개시한다. 
       
     테스트 패턴, 리세스 채널, 베리어 메탈, 계면 특성, 텅스텐
Patent KR-20090043853-A (KR)
Inventor: YANG YOUNG GOO
IPC: H03F1/07
Filed: 2007-10-30
Abstract: 본 발명은 도허티 전력 증폭 장치에 관한 것으로, 보다 구체적으로 도허티 전력 증폭 장치의 출력 정합 회로에서 보상 선로를 제거함으로써 소형화하고 전력 손실을 줄일 수 있는 도허티 전력 증폭 장치에 관한 것이다. 
     본 발명에 따른 도허티 전력 증폭 장치는 제1 출력 정합 회로와 제2 출력 정합 회로에 별도의 보상 선로부를 구비하지 않음으로써, 도허티 전력 증폭 장치의 크기를 소형으로 제작할 수 있으며 제작 비용을 줄일 수 있다.  또한, 본 발명에 따른 도허티 전력 증폭 장치는 보상 선로부를 제거함으로써, 종래 보상 선로부에서의 전력 손실을 방지할 수 있다.  
     
     전력 증폭기, 도허티 증폭기, 보상 선로
Patent KR-20090046420-A (KR)
Inventor: JEON GAP BAE
IPC: B60T7/08
Filed: 2007-11-06
Abstract: 본 발명은 전동모터를 통해 파킹케이블을 작동할 수 있도록 하는 전자식 파킹 브레이크에 관한 것으로, 
     종래의 전자식 파킹 브레이크에 있어서는 한 쌍의 파킹케이블(50')이 일직선상에 배열되므로 파킹 브레이크 작동에 필요한 스트로크를 얻기 위해서 변환기구의 길이를 길게 해야 하는 문제가 있었던 바, 
     전동모터의 회전축에 감속기어가 접속되고, 감속기어에 파킹작동기어가 접속되며, 파킹작동기어에 파킹케이블이 고정되는 이송축이 접속되는 전자식 파킹 브레이크를 구성함에 있어서, 상기 파킹작동기어의 내접기어를 형성하고, 내접기어의 내부 상부와 내부 하부에 각각 파킹케이블이 고정되고 외주에 내접기어와 대응되는 이송접속기어가 형성된 이송축을 이송 가능하게 접속하는 것 등을 특징으로 하는 본 발명에 의하면 이송축을 일직선상으로 배치하지 않고 상하로 겹쳐서 배치함으로써 파킹작동 및 파킹해제를 위한 스트로크의 길이를 짧게 할 수 있게 되고, 그에 따라 전자식 파킹 브레이크의 전체 크기를 줄일 수 있게 되어 차량에 용이하게 장착할 수 있게 되는 등의 효과를 얻을 수 있게 된다. 
       
     전자식 파킹 브레이크, 파킹작동기어, 내접기어, 이송축, 이송접속기어
Patent KR-20090050205-A (KR)
Inventor: JEON JIN O
IPC: A63B67/18
Filed: 2007-11-15
Abstract: 본 고안은 배드민턴 운동 및 연습을 하고자 하는 사람들에게 있어 배드민턴 공을 공기 압축기를 이용해 발사하여 효율적인 연습 및 운동이 되도록 고안된 장치이다. 
       
     배드민턴, 배드민턴 공 발사장치
Patent KR-20090050894-A (KR)
Inventor: CHOE BYUNG HAK
IPC: G01N9/00
Filed: 2007-11-16
Abstract: 미소(微小) 질량을 측정할 수 있는 고감도 나노 밸런스(Nano-Balance)가 개시된다.  본 발명에 따른 나노 밸런스는 PMN-PT 피조 단결정으로 이루어지는 진동부를 포함하는 것을 특징으로 한다. 
       
     나노 밸런스, 진동자, 피조 단결정
Patent KR-20090055967-A (KR)
Title: Stopper combined use mounting device
Inventor: KIM DO HYUNG
IPC: B62D27/00
Filed: 2007-11-29
Abstract: A stopper-cum-mounting device is provided to improve anti-rusting by cutting off inflow of foreign material and matching weld nut and bracket completely. A stopper-cum-mounting device comprises a weld nut(10) wherein a protrusion(11) is formed in one side thereof, a vehicle panel(20) wherein a mounting hole in which a weld nut is inserted is formed in the top thereof, and a bracket(30) which is arranged in the lower part of the vehicle panel and wherein a hole(31) is formed in order to be connected to the weld nut and bolt.
Patent KR-20080051092-A (KR)
Title: In-vehicle electronic system and in-vehicle electronic apparatus
Inventor: OZAKI YUKISUKE
IPC: G08G1/096
Filed: 2007-12-03
Abstract: An in-vehicle electronic system and an in-vehicle electronic apparatus are provided to improve user friendliness in a system where a navigation apparatus is attachable to an audio apparatus. An in-vehicle electronic system(1) includes an audio apparatus(100) and a navigation apparatus(200). The audio apparatus is mounted on a vehicle. The navigation apparatus is detachably installed on a front panel of the audio apparatus through a connection portion(300). The front panel of the audio apparatus includes a display unit(101) and an operating unit(102).
Patent KR-20090057820-A (KR)
Title: Printed circuit board and manufacturing method thereof
Inventor: CHO CHUNG WOO
IPC: H05K1/02
Filed: 2007-12-03
Abstract: A printed circuit board and a manufacturing method thereof are provided to increase a contact area of a via and a pad by burying a part of the pad or the whole pad into the via. A printed circuit board comprises a first and a second insulation layers(20,30), a first and a second pads(14,23), and a first and a second via(22,32). The first via passes through a first insulation layer, and a first pad is formed on one side of the first insulation layer. A part or whole of a pad is buried into the first via, and the second is formed on the other side of the first insulation layer in order to correspond to the location of the first via. The second insulation layer is laminated on the other side of the first insulation layer, and the second via passes through the second insulation layer. A part or whole of the second pad is buried into the second via.
Patent KR-20090061987-A (KR)
Inventor: CHOI SUNG HWA
IPC: B60G21/00
Filed: 2007-12-12
Abstract: A roll preventive apparatus for vehicles is provided to allow a piezoelectric element to deliver the power to a connection plate according to the torsional strain of the connection plate, thereby preventing excessive roll generation. A roll preventive apparatus for vehicles comprises: an end bar(11) to be connected to knuckles of right and left wheels(1); a stabilizer member(10) with a connection plate(13) where a joint of the end bar is fixed to a sub-frame by the medium of a fixing member(21); a strain gauge(30) to measure the torsional strain of the connection plate by using electrical resistance which is changeable according to the torsional strain; a piezoelectric element(40) to supply the power corresponding to the torsional strain to the connection plate; and a controller(60) to receive signals from the strain gauge and an input unit and to control the operation of a power supply unit.
Patent KR-20080055669-A (KR)
Title: Method for repairing liquid crystal display panel
Inventor: FAN YANJIANG
IPC: G02F1/1335
Filed: 2007-12-12
Abstract: A method for repairing an LCD(Liquid Crystal Display) is provided to avoid the problems such as spot defects by using an optical property of the liquid crystal display principle. A TFT(Thin Film Transistor) panel has plural pixels and at least one pixel having a bright spot defect. An opaque material(6) of one layer is formed at the position corresponding to a pixel area with the bright spot defect on the first glass substrate(4) by the deposition or printing, so that the transmission of light is shielded. The bright spot defect due to the metal remnant material is converted into a dark spot defect. Likewise, the opaque material of one layer is formed at the position corresponding to a pixel area with the bright spot defect on the second glass substrate. The opaque material is arranged to a surface or both surfaces of the TFT panel. The deposition or printing is performed on a surface or all surfaces of the first glass substrate as the TFT panel and/or the second glass substrate as a color filter panel.
Patent KR-20090062339-A (KR)
Title: Diagnostic method for dc-dc converter of electric vehicle
Inventor: MOON SANG HYEON
IPC: B60L11/18
Filed: 2007-12-13
Abstract: A method for diagnosing a defect of a DC-DC converter of an electric vehicle is provided to lengthen durability of the DC-DC converter and an auxiliary battery in a hybrid/fuel cell vehicle by diagnosing rapidly the defect of the DC-DC converter. A low-voltage DC-DC converter outputs a voltage according to a voltage command received from an external controller and monitors simultaneously an output voltage. The voltage command and the real output voltage are compared with each other in order to diagnose a defective state of a DC-DC converter. When a difference between the voltage command and the real output voltage exceeds a reference voltage and the exceeding time of the reference voltage is maintain during a constant period, the defective state is diagnosed. The low-voltage DC-DC converter generates a defective diagnosis code and turns on an alarm lamp.
Patent KR-20090065580-A (KR)
Title: 핸드폰수납가방
Inventor: PARK SUNG CHAN
IPC: A45C11/00
Filed: 2007-12-18
Abstract: 핸드폰꽂이가방 
       
     핸드폰가방
Patent KR-20090010862-A (KR)
Title: Conveying installation for the transport of goods
Inventor: HERBERT TRIEB
IPC: B65G39/20
Filed: 2007-12-18
Abstract: A goods transport device is provided that the fixing of the conveyer belt about the bottom side of the transportation beam is specially improved. A goods transport device comprises a conveyer belt(1) moving according to the return part in the transport device, a plurality of transportation beams(2) in which the conveyer belt is fixed to the bottom side, a running roller(5) rolling over on two pairs of transfer rope or the transfer rail, a sealing strip(3) which is made of resilient material and which is arranged between the top unit of the conveyer belt and a part of the transportation beam.
Patent KR-20090066496-A (KR)
Title: Front end module for mobile phone
Inventor: LEE JAE YOUNG
IPC: H01L23/12
Filed: 2007-12-20
Abstract: A front end module for mobile communication terminal is provided to prevent pollution of a signal input/output pad by forming a ring-shaped conductive epoxy block on an upper surface of a substrate between a ground pad and the signal input/output pad. A plurality of chips(150) are mounted on an upper surface of a substrate(100) of a front end module for mobile communication terminal. A plurality of ground pads(110) and a plurality of signal input/output pads(120) are formed on the upper surface of the substrate. The chips are respectively boned on the ground pads by using a conductive epoxy(160). The chips are bonded with the signal input/output pads by using wires. A ring-shaped conductive epoxy block(170) is formed on the upper surface of the substrate between the ground pads and the signal input/output pads.
Patent KR-20090066975-A (KR)
Title: Cooling water pressure controlling apparatus and method for chemical vapor deposition process chamber
Inventor: PARK IN CHEON
IPC: H01L21/00
Filed: 2007-12-20
Abstract: A cooling water pressure control apparatus of a process chamber for chemical vapor deposition and a controlling method are provided to measure pressure of cooling water by installing pressure gauges on a cooling water inflow line and a cooling water outflow line. A cooling water pressure control apparatus of a process chamber for chemical vapor deposition includes pressure gauges(41,42,43,44), a control unit(50), and an alarm generation unit(60). The pressure gauges are installed on a cooling water circulation line. The pressure gauges are formed to measure the pressure of the cooling water. The control unit compares the cooling water pressure measured by the pressure gauges with the predetermined reference pressure in order to determine an optimum level of the cooling water pressure. The alarm generation unit is connected to the control unit. The alarm generation unit generates an alarm signal when the cooling water pressure exceeds the reference pressure.
Patent KR-20090068566-A (KR)
Title: Mobile terminal, method of processing signal in the mobile terminal, mobile communication system, and method of processing signal in the obile communication system
Inventor: AHN SEUNG JIN
IPC: H04B1/40
Filed: 2007-12-24
Abstract: A mobile terminal, a signal processing method of the mobile terminal, a mobile communication system, and a method for processing a signal of the mobile communication system are provided to refuse the reception of a call signal through a base station and to set up the reception refusal of a call signal through a simple procedure. A user input unit(130) inputs a reception refusal setup signal and a release signal of a call signal, and a display unit(151) displays a screen for setting up and releasing the call signal. A controller(180) controls the transmission of an uplink channel, which includes reception refusal information, to a base station. A wireless communication unit(110) transmits the uplink channel including the reception refusal information of the call signal to base station.
Patent KR-20090068651-A (KR)
Title: A method for preparing a polycarbonate resin having a low coefficient of thermal expansion
Inventor: CHUN HYUN AEE
IPC: C08G64/40
Filed: 2007-12-24
Abstract: A polycarbonate resin of a semi-interpenetrating polymer network system is provided to secure excellent light transparence and low thermal expansion coefficient and to prepare a plastic substrate or a display optical film with excellent performance. A polycarbonate resin of a semi-interpenetrating polymer network system comprises the steps of: preparing a raw material mixture containing polycarbonate, a bisphenol-based compound having epoxy end groups and amine curing agent; and reacting the raw material mixture. The weight average molecular weight of polycarbonate is 400-50,000. The main chain of the polycarbonate comprises at least one repeating units represented by formula 1 or 2.