baber/WOPTO huggingface dataset:
Patent KR-20160053587-A (KR)
Inventor: MIN CHUNG GI
IPC: G06F17/30
Filed: 2014-11-05
Abstract: The present invention relates to a method and a device for minimizing a database size of an n-gram language model. The method for minimizing the database size of the n-gram language model according to the present invention includes the steps of: generating one or more text data by analyzing an input signal; extracting a candidate text data in which a word corresponding to a dictionary database exists, from the one or more text data; calculating a hash value with respect to the candidate text data by using a hash function; and obtaining appearance frequency data corresponding to the hash value from an n-gram table corresponding to a word count of the candidate text data. The present invention has an effect that an index value is removed from the n-gram table by obtaining the appearance frequency data of the n-gram table through the hash value of the text data, thus a size of the n-gram table is reduced.
Patent KR-20140134639-A (KR)
Inventor: MARINIER PAUL
IPC: H04B7/10
Filed: 2014-11-06
Abstract: A method for providing a smart antenna, when setting a connection between a station (STA) and an access point in a wireless local area network, is started by transmitting a beacon frame by an AP on one antenna beam. The beacon frame is received from the STA which measures a signal quality of the beacon frame. The AP is switched by a different antenna beam and this is repeated until the beacon frame is transmitted on all of the antenna beams. The STA is connected to the AP which transmits the beacon frame having the highest signal quality among the antenna beams. After the STA transmits a probe request frame to the AP, a method similar to the AP responding to a probe request frame transmitted through the multiple antenna beams may be used.
Patent KR-20160054982-A (KR)
Title: High-rate coagulative precipitation method for coagulated sludge using magnetism
Inventor: RO YOUNG JUN
IPC: C02F1/52
Filed: 2014-11-07
Abstract: The present invention relates to a method for precipitating coagulated sludge at a high rate by using magnetism. The method includes the steps of: forming coagulated sludge by coagulating contaminants in source water by introducing flocculant and magnetic nanoparticles (MNP) into the source water and agitating the same (S10); precipitating the coagulated sludge through magnetic force formed by applying power to a superconductive magnet (20) installed on an outer wall below a precipitating container (10) (S20); and collecting the precipitated coagulated sludge through an outlet (13) formed on a lower surface (11) of the precipitating container (10). According to the present invention, the sludge is easily coagulated by using the magnetic nanoparticles as coagulated cores. In addition, the precipitating rate is increased by using the superconductive magnet to minimize the use of medicine and the efficiency of removing contaminants in processing water may be improved.
Patent KR-20160058510-A (KR)
Inventor: HAM SOON JA
IPC: F04D29/60
Filed: 2014-11-17
Abstract: The present invention relates to an improved electric fan. The electric fan comprises: a cage coming in contact with a floor surface to be disposed in parallel to the floor surface; a fan assembly provided inside the cage to generate wind; a main body mounted to stand upright on a surface corresponding to a floor contact surface of the cage and having an operation unit operating the electric fan therein; and a control plate disposed in a side portion of the main body to control the fan assembly. The purpose of the present invention is to provide an electric fan effectively cooling a lower portion of a table.
Patent KR-20160059073-A (KR)
Inventor: AN JUNG CHUL
IPC: B01J2/02
Filed: 2014-11-17
Abstract: Provided are an apparatus and a method for manufacturing anisotropic micro carbon spheres. According to the present invention, the apparatus comprises: a pitch reaction vessel having a spray nozzle to spray pitch in the form of pitch particles through a spray hole having a predetermined diameter, the pitch being manufactured from coal tar, petroleum tar, or a low softening point pitch; a heater disposed on an outer side of the pitch reaction vessel to heat the pitch reaction vessel and melt the pitch; a thermoregulator connected to the heater to regulate the temperature of the heater; a mesh screen disposed under the pitch reaction vessel, the mesh screen through which pitch particles sprayed from the spray nozzle pass; a high voltage generator connected to the pitch reaction vessel and the mesh screen and applying a direct current having a predetermined level of voltage to the pitch reaction vessel and the mesh screen; and a solvent vessel installed under the mesh screen and collecting particles that pass through the mesh screen to manufacture the anisotropic micro carbon spheres.
Patent KR-20160059637-A (KR)
Title: Injection Mold Apparatus
Inventor: CHOI KI SEOP
IPC: B29C33/02
Filed: 2014-11-19
Abstract: Disclosed is a mold exchanging device provided to exchange a mold of an injection mold device. A preheating auto-coupler unit is disposed in one side of the mold exchanging device to be able to be coupled with an auto-coupler unit disposed in one side of a mold. A mold installed in the mold exchanging device, before being supplied to an injection mold device to be exchanged, is maintained in a preheated state by means of the preheating auto-coupler unit disposed in the mold exchanging device. Accordingly, the injection mold device may be immediately driven after the mold is exchanged without having standby time, so driving efficiency of the injection mold device may be improved.
Patent KR-20160062356-A (KR)
Inventor: MOON SEONG JIN
IPC: F01N13/00
Filed: 2014-11-25
Abstract: The present invention relates to a muffler compartment cooling system of a commercial vehicle and a control method thereof, and more specifically, to a muffler compartment cooling system and a control method thereof, preventing heat damage and a fire to a peripheral part due to high temperatures caused by replaying a diesel particulate filter (DPF). At least one DPF cooling fan is mounted on a muffler compartment of the commercially vehicle to induce outer air into the muffler compartment, thereby lowering the temperature of the muffler compartment, and the cooling fan is controlled to be operated depending on the operational state of the DPF and the atmospheric temperature condition, thereby improving durability of the cooling fan. When a fault occurs in the cooling fan, a procedure to lower the temperature of the muffler compartment such as reducing engine output or the like is performed, thereby preserving the thermally damaged part and preventing a fire.
Patent KR-20160063682-A (KR)
Title: Prestressed Steel-Concrete Composite Girder with Upper Hollow Portion, and Continuous Structure of such Prestressed Steel-Concrete Composite Girders
Inventor: LEE SANG HYUN
IPC: E01D2/00
Filed: 2014-11-27
Abstract: The present invention relates to a steel-reinforced prestress concrete (PSC) composed of a concrete unit (1) and a steel material unit (2) and a multi-span continuous structure thereof. The steel material unit (2) is composed of a pair of web plates (21) and a lower flange (22). A longitudinal cross section wherein a cavity unit (10) extended in a longitudinal direction is formed in the concrete unit (1). The center of the cross section of the PSC girder is positioned in a place higher than an existing PSC girder if a height of the girder is identical to the height of an existing PSC girder, thus an eccentric distance to a tendon arranged in a tensional side from the center of the cross section is increased. Accordingly, a tensile force applied to the steel material unit is remarkably decreased by increasing an effect of prestress introduction. Therefore, a usage of the steel material is reduced, and a low-height and long-span girder can be formed.
Patent KR-20160063895-A (KR)
Inventor: KO HYUN SEOK
IPC: C21D8/12
Filed: 2014-11-27
Abstract: An oriented electrical steel sheet and a manufacturing method thereof are disclosed. The manufacturing method of the oriented electrical steel sheet according to an embodiment of the present invention comprises: a step of providing a slab including, by weight%, 1.0% to 4.0% of Si, 0.1% to 0.4% of C, and the remainder including Fe and inevitable impurities; a step of reheating the slab; a step of performing hot rolling on the slab to produce a hot-rolled steel sheet; a step of performing decarburization-annealing on the hot-rolled steel sheet; a step of performing cold rolling on the decarburization-annealed hot-rolled steel sheet; a step of performing decarburization-annealing on the cold-rolled steel sheet; and a step of performing final annealing on the cold-rolling-completed steel sheet.
Patent KR-20160064483-A (KR)
Inventor: KIM KYUNG SOO
IPC: E21B43/02
Filed: 2014-11-28
Abstract: The present invention relates to a separator using a vibrating method and, more specifically, to a separator using a vibrating method, capable of easily dissolving solidified sand in the separator with vibrations, thereby increasing the efficiency of sand removal by high pressure water and reducing time and efforts for the maintenance of the separator. According to the present invention, the separator includes: a separator body separating sand, included in oil, and including an outlet; a high pressure water spray part discharging the sand through the outlet by spraying high pressure water to the sand laminated inside the separator body; and a vibration generating part installed to apply vibrations to the sand laminated inside the separator body.
Patent KR-20160064577-A (KR)
Title: 부채 선풍기
Inventor: HWANG JIN HEE
IPC: F04D29/00
Filed: 2014-11-28
Abstract: 본 발명은 부채 선풍기에 관한 것으로, 더욱 상세하게는 상부 케이스와 하부 케이스 사이에 공간이 마련된 부채 선풍기에 있어서, 모터와; 상기 모터의 회전축과 맞물려 회전되는 제1, 제2 밸트; 상기 제1, 제2 밸트와 연결되는 제1, 제2 회전체; 상단부에 부채가 체결되고 상기 부채를 회전시키는 부채 구동축; 상기 제1, 제2 회전체와 상기 부채 구동축 사이에 연결되는 제1, 제2 공차보정 클랭크;를 포함하고, 상기 부채 구동축의 상단부에는 상기 부채를 체결시키는 부채 체결부가 구비되고, 상기 부채 체결부는 상기 부체 구동축의 상단부에 구비된 회전 기어부와, 상기 회전 기어부와 맞물려 회전되는 제1 기어부, 상기 제1 기어부의 상부에 체결되는 부채 체결 레버가 구비된 부채 고정부가 더 포함되는 것을 특징으로 한다. 
이에 따라, 본 발명의 부채 선풍기는 사용자가 직접 부채질을 하지 않으면서 종래의 모터 구동에 따른 인위적인 바람이 아닌 자연적인 바람을 발생시켜 모든 사용자들에게 항상 상쾌한 바람을 제공할 수 있는 매우 유용한 발명인 것이다.
Patent KR-20160069425-A (KR)
Title: Use of Kazinol C for treating or preventing cancer
Inventor: LIM JONG SEOK
IPC: A61K31/045
Filed: 2014-12-08
Abstract: The present invention relates to a pharmaceutical composition for preventing and treating cancer, comprising kazinol C, and to a health functional food for preventing and alleviating cancer, more specifically, comprising kazinol C of chemical formula 1 derived from Broussonetia kazinoki as an active ingredient. The kazinol C of the present invention promotes the apoptosis of cancer cells by increasing AMPK activities inside the cells, and has effects in preventing, treating, or alleviating cancer by inhibiting the non-adhesive growth and cell movement.
Patent KR-20160070399-A (KR)
Inventor: YU YOUNG HEE
IPC: B29C45/26
Filed: 2014-12-10
Abstract: The present invention relates to an injection molding apparatus. An injection molding apparatus, according to an embodiment of the present invention, comprises: a main body having a seat unit; a motor assembly which is installed in the seat unit and has a motor, a motor shaft, and an eccentric shaft eccentrically joined to the motor shaft; and a mold assembly joined to the eccentric shaft, wherein the mold assembly comprises: a mold having an injection unit and an inlet hole for feeding starting materials into the injection unit; a plate assembly which is movably installed on one side of the mold and has a valve pin joined thereto for selectively opening or closing the inlet hole; and a shaft receiving unit which is formed by the sinking of at least a part of the plate assembly and receives the eccentric shaft, wherein as the motor operates, the eccentric shaft rotates eccentrically so as to guide a linear movement of the plate assembly.
Patent KR-20150073087-A (KR)
Inventor: BECCUE STEPHEN MARK
IPC: H03K3/354
Filed: 2014-12-11
Abstract: An apparatus and a method for multiphase oscillators are provided. In certain implementations, an oscillator system includes a first multiphase oscillator and a second multiphase oscillator in which the phase and the frequency are locked. Additionally, the first and second multiphase oscillators are phase-locked by an amount of phase shift which provides colocated clock signal phases of relatively wide angular distances, capable of being used by an amplification circuits of the oscillators. The first and/or second multiphase oscillators include one or more amplification circuits which operate using at least one clock signal phase generated by the first multiphase oscillator and using at least one clock signal phase generated by the second multiphase oscillator.
Patent KR-20160071914-A (KR)
Inventor: JUNG KOO
IPC: D06C7/00
Filed: 2014-12-12
Abstract: The present invention relates to a manufacturing method of a highly durable composite fabric for a marine leisure. The manufacturing method prepares a material having a high-strength PET texture or a wrap (tricot) fabric, treats the fabric to be water-repellent and flame-retardant; coats the surface of the prepared material with a non-yellowing and highly durable thermoplastic elastic plastic (TPE) coating solution; hardens the TPE coating solution by thermally treating the material coated with the TPE coating solution; and plans a pattern and a design with respect to the use and the type of the material completed with the coating, and commercializes the same by sealing the same in a highly durable and special manner.
Patent KR-20160072509-A (KR)
Inventor: KIM SANG SIK
IPC: H01L27/146
Filed: 2014-12-15
Abstract: A curved image sensor is provided. According to an embodiment, the curved image sensor comprises: a support substrate; a bonding pattern formed on the support substrate; a sensor substrate contacting the bonding pattern in an upper portion of the support substrate and having a curved light incident surface; and a fixing pattern formed on the support substrate to surround an edge part of the sensor substrate. Therefore, the curved image sensor can remarkably increase production efficiency.
Patent KR-20160076292-A (KR)
Inventor: KIM SANG BONG
IPC: B65G43/08
Filed: 2014-12-22
Abstract: The present invention provides a real-time induction-carrier synchronization control method of an automatic product classification system. According to the present invention, the real-time induction-carrier synchronization control method of an automatic product classification system improves efficiency of an automatic classification work of a product and the working speed. According to the present invention, the real-time induction-carrier synchronization control method of an automatic classification system comprises: a step of detecting the induction-carrier moving speed; a step of detecting whether or not a product is loaded in a carrier; a step of sensing the product loaded in an induction; a step of controlling the speed of the induction-carrier to be synchronized; and a step of loading the non-classified product in the carrier.
Patent KR-20160077931-A (KR)
Inventor: LEE JOO YOUNG
IPC: H01L51/56
Filed: 2014-12-24
Abstract: The present invention relates to a method for manufacturing a light extraction substrate for an organic light emitting diode, a light extraction substrate for an organic light emitting diode, and an organic light emitting diode including same, and more specifically, to a method for manufacturing a light extraction substrate for an organic light emitting diode, a light extraction substrate for an organic light emitting diode, and an organic light emitting diode including same, capable of significantly increasing light extraction efficiency of the organic light emitting diode. To this end, provided in the present invention is the method for manufacturing a light extraction substrate for the organic light emitting diode, including: a mixture-preparing step of preparing a mixture by mixing a sol-gel solution containing a first metal oxide, and a plurality of scattering particles composed of a second metal oxide having a refractive index different from that of the first metal oxide; a mixture coating step of coating the mixture on a base substrate; a mixture firing step of firing the mixture which has been coated to form, on the base substrate, a matrix layer including the first metal oxide and inside of which the scattering particles are dispersed; and a filling layer forming step of forming a filling layer by filling the surface of the matrix layer with a material having a refractive index different from that of the matrix layer, wherein the filling layer fills cracks formed on the matrix layer when firing the mixture, and wherein corrugation is formed on the surface of the filling layer by the scattering particles and the shape of the cracks which is transferred onto the surface of the filling layer.
Patent KR-20160078029-A (KR)
Inventor: YOO JAE YONG
IPC: G06F9/46
Filed: 2014-12-24
Abstract: Provided is a device comprising: a plurality of vGPUs to receive commands from each of a plurality of operating systems (OS); and a vGPU scheduler to perform scheduling the order and time for the GPU to process the received commands, and a method to perform scheduling. The vGPU scheduler performs scheduling of the order and time for the commands from a foreground OS (FG OS) among a plurality of OS to be first processed.
Patent KR-20160079591-A (KR)
Title: Apparatus and method for analyzing kfda's unstructured drug approval document for creating patient education pictoram and patient education and automated classifying drug approval information and text-analysis
Inventor: KIM JEONG HUN
IPC: G06Q50/22
Filed: 2014-12-28
Abstract: The present invention relates to a device and a method for automating and analyzing pharmaceutical product approval information included in an unstructured file and, more specifically, to a device and a method for securing and analyzing useful data through a secondary large-scale pharmaceutical product information analysis through a structured analysis of pharmaceutical product approval information composed of an unstructured file type including an Araea Hangeul file or the like.
Patent KR-20160082036-A (KR)
Title: Electric brake system
Inventor: CHOI SEONG HO
IPC: B60T13/74
Filed: 2014-12-30
Abstract: Disclosed is an electronic brake system. According to an embodiment of the present invention, the electronic brake system, which includes: a reservoir storing oil; a master cylinder having a first hydraulic port and a second hydraulic port and connected to the reservoir to be provided with oil; a pedal displacement sensor sensing displacement of a brake pedal; and a simulation device connected to the master cylinder to provide reaction depending on the pedal effort of the brake pedal, comprises a liquid pressure supply device, a hydraulic pressure control unit, and an electronic control unit. The liquid pressure supply device allows a motor to be operated by outputting an operation of the brake pedal as an electric signal through the pedal displacement sensor when the brake pedal is operated and converts the rotation force of the motor into linear movement. The hydraulic control unit is connected to the liquid pressure supply device through a main hydraulic flow path and has a first hydraulic circuit and a second hydraulic circuit, which control two wheels, respectively, to be provided with a liquid pressure by force generated by the liquid pressure supply device to perform braking. The electronic control unit controls the motor and valves based on liquid pressure information and pedal displacement information. The hydraulic control unit has four inlet valves included in an upper current side of each wheel cylinder to control the liquid pressure flowing in the wheel cylinder installed on each wheel and transfers the liquid pressure to the wheel cylinder of each wheel by opening two of the four inlet values.
Patent KR-20160081556-A (KR)
Title: Up-down moving and rotation apparatus of tool
Inventor: LEE KYEONG MIN
IPC: B64F5/00
Filed: 2014-12-31
Abstract: The present invention relates to an apparatus for vertically moving and rotating a tool, comprising: a pair of vertical transfer carriages spaced apart from each other, fixed to a bottom, and formed in a vertical direction; a vertical movement unit coupled to each of the vertical transfer carriages and adjusted in height in the vertical direction; and a rotating unit coupled to each of the vertical movement unit, formed such that a rotational shaft thereof is rotatable centered on a traverse shaft in a mutually facing direction and an angle at which the rotational shaft is rotated is adjustable, and having a tool coupling part allowing a tool to be coupled and fixed to the rotational shaft. Since the tool is fixed to the tool coupling part of the rotating unit, the tool supporting a component can be easily adjusted vertically and a less space is required, and since the tool in which the component is installed and fixed is rotatable, a worker is able to perform an operation within the component in a standing posture.
Patent KR-20140053964-A (KR)
Title: 검색 요청을 처리하는 방법 및 시스템
Inventor: GRANDJEAN PATRICK ROGER
IPC: G06F17/30
Filed: 2012-06-26
Abstract: 본 발명은 검색 요청을 처리하는 방법 및 시스템에 관한 것이다. 데이터 스트링의 시퀀스를 포함하고 복수의 검색 파라미터를 나타내는 검색 요청이 수신된다. 상기 스트링은 파싱되고 검색 요청은 상기 데이터 스트링의 시퀀스 내에 검색 기준을 반영하는 항목을 인식하는 것에 의해 검색 파라미터를 한정하도록 해석된다. 질의는 이전의 처리 결과에 기초하여 형성되고 적어도 하나의 여행 데이터 서비스가 질문될 수 있다. 본 발명은 유저가 자유로이 텍스트를 입력한 것에 기초하여 정보를 검색하는 방법을 개선시킨다. 본 발명은 여행 데이터 서비스 질문 방법 및 검색 엔진에 적용가능하다.
Patent KR-20140066992-A (KR)
Inventor: DICK KYLE
IPC: B63B25/28
Filed: 2012-06-29
Abstract: 본 발명은, 선박의 갑판 상에서 적어도 두 개의 구역 중 하나의 공간을 증가 및/또는 감소시키기 위해 이동 가능한 상부구조물을 구비하는 선박에 관한 것이다. 또한, 본 발명은, 전개되었을 때 선체를 가로지르는 방향으로 이동한 다음 아래로 이동하는 동력 포드를 구비하는 수륙양용 선박에 관한 것이다. 나아가, 본 발명은, 갑판 공간을 증대시키고 화물 또는 승객이 선박으로부터 진입 및/또는 진출하기에 용이하도록 하는 램프 장치를 제공한다.
Patent KR-20140105430-A (KR)
Title: 수분으로부터 보호하기 위하여 복잡한 표면 상에 공형 코팅된 결정질 특징을 갖는 얇은 차단 필름을 갖는 광전자 장치
Inventor: FEIST REBEKAH K
IPC: H01L31/048
Filed: 2012-07-27
Abstract: 본 발명은 복수개의 접합부를 포함하는 비-평면형 표면 상에 제공되는 하나 이상의 공형 박막 차단 코팅을 함유하는 광전자 장치를 제공한다.  차단 코팅은 비정질 매트릭스에 분포된 결정질 도메인을 포함하는 하이브리드 형태를 갖는다.  공형 코팅은, 코팅이 다수의 실시양태가 전기 전도성이도록 하기에 충분한 결정질 특징을 가지면서도 오래 지속되는 내구성의 고품질 차단 보호력으로 광전자 장치를 보호한다.
Patent KR-20140097119-A (KR)
Title: 타이어 코드 피복, 브레이커 엣지 스트립, 브레이커 쿠션 또는 코드 인접 스트립용 고무 조성물, 및 공기 타이어
Inventor: MIYAZAKI TATSUYA
IPC: C08L61/28
Filed: 2012-08-31
Abstract: 조종 안정성, 저연비성, 내구성, 승차감 성능, 접착성을 균형있게 개선할 수 있는 타이어 코드 피복, 브레이커 엣지 스트립, 브레이커 쿠션 또는 코드 인접 스트립용 고무 조성물, 및 이것을 이용한 공기 타이어를 제공한다. 이소프렌계 고무와, 페놀 수지 및/또는 알킬페놀 수지와, 헥사메톡시메틸올멜라민의 부분 축합물 및/또는 헥사메틸올멜라민펜타메틸에테르의 부분 축합물을 포함하고, 고무 성분 100 질량% 중의 상기 이소프렌계 고무의 함유량이 60 질량% 이상이고, 상기 고무 성분 100 질량부에 대하여, 상기 페놀 수지 및 상기 알킬페놀 수지의 합계 함유량이 2∼3.9 질량부, 상기 헥사메톡시메틸올멜라민의 부분 축합물 및 상기 헥사메틸올멜라민펜타메틸에테르의 부분 축합물의 합계 함유량이 0.5∼5 질량부, 실리카의 함유량이 15 질량부 이하인 타이어 코드 피복, 브레이커 엣지 스트립, 브레이커 쿠션 또는 코드 인접 스트립용 고무 조성물에 관한 것이다.
Patent KR-20140054421-A (KR)
Inventor: KODAIRA SHUJI
IPC: C23C14/35
Filed: 2010-07-15
Abstract: 이 성막 장치(1)는, 성막면을 가진 피처리체(W)와 스퍼터링면(3a)을 가진 타겟(3)이 대향하도록 상기 피처리체(W) 및 상기 타겟(3) 모두가 배치되는 내부 공간을 갖는 챔버(2)와, 상기 챔버(2)안을 감압하는 배기부와, 상기 스퍼터링면(3a)이 노출되는 상기 내부 공간에 자기장을 발생시키는 제1 자기장 발생부(4)와, 상기 타겟(3)에 음의 직류 전압을 인가하는 직류 전원(9)과, 상기 챔버(2)안에 스퍼터링 가스를 도입하는 가스 도입부(11)와, 상기 스퍼터링면(3a)의 전면과 상기 피처리체(W)의 상기 성막면의 전면 사이에 수직인 자력선이 지나가도록 수직 자기장을 발생시키는 제2 자기장 발생부(13)와, 상기 제2 자기장 발생부(13)에서 보아 상기 타겟보다 상류측에 배치된 제3 자기장 발생부(18)를 포함한다.
Patent KR-20140070591-A (KR)
Title: 유기 백금 화합물을 포함하는 화학 증착용 원료 및 상기 화학 증착용 원료를 사용한 화학 증착법
Inventor: SAITO MASAYUKI
IPC: C07C13/263
Filed: 2012-10-12
Abstract: 본 발명은, 화학 증착법에 의해 백금 박막 또는 백금 화합물 박막을 제조하기 위한 화학 증착용 원료이며, 다음의 화학식으로 표시되는 2가의 백금에 시클로옥타디엔 및 알킬 음이온이 배위된 유기 백금 화합물을 포함하는 화학 증착용 원료이다.  여기서, R 1 과 R 2 가, 프로필과 메틸, 프로필과 에틸, 또는 에틸과 메틸의 조합 중 어느 하나가 특히 바람직하다(화학식 중 R 1 , R 2 는 알킬기이며, R 1 과 R 2 는 상이하며, 또한, R 1 , R 2 의 탄소수는 합계 3 내지 5이다).