baber/WOPTO huggingface dataset:
Patent KR-20140046660-A (KR)
Title: Method for co-culturing cancer cells with feeder cells
Inventor: LEE JONG HO
IPC: C12Q1/02
Filed: 2012-10-10
Abstract: The present invention relates to a method for co-culturing cancer cells by using feeder cells. More specifically, the present invention relates to a method for co-culturing cancer cells with feeder cells by making the cancer cells and the feeder cells come in contact with each other through a membrane between them so that the growth of the cancer cells is expedited. The method for co-culturing cancer cells with feeder cells according to the present invention comprises the steps of (a) preparing an insert including a side wall forming an internal space and both ends opened, and a membrane which is installed inside the side wall to separate the internal space into a top space and a bottom space, is equipped with a first surface at the top space side and a second surface at the bottom space side, and has a plurality of pores formed through the first surface and the second surface; (b) culturing the feeder cells on the first surface of the membrane so as to make the filopodia of the feeder cells pass through the pores of the membrane to be exposed to the side of the second surface of the membrane; (c) turning over the insert so that the bottom space of the insert is disposed on the top space and the second surface faces upward; and (d) disposing cancer cells on the second surface and co-culturing the cancer cells with the feeder cells. In the method for co-culturing cancer cells with feeder cells according to the present invention, cancer cells can grow rapidly because a cancer cell and a feeder cell come in contact with each other directly through a membrane, having a plurality of pores, between them. [Reference numerals] (AA) Step of preparing an insert including a membrane having a plurality of pores; (BB) Step of culturing feeder cells on a first surface of the membrane; (CC) Step of turning over the insert; (DD) Step of disposing cancer cells on a second surface of the membrane and co-culturing the cancer cells with the feeder cells
Patent KR-20140046840-A (KR)
Title: Photosensitive resin composition for color filter and color filter using the same
Inventor: BAEK TAEK JIN
IPC: G02B5/20
Filed: 2012-10-11
Abstract: Provided are a photosensitive resin composition for a color filter and a color filter using the same, wherein the photosensitive resin composition includes a dye-polymer complex including repeating unit derived from a compound represented by chemical formula 1, an acrylic photopolymerizable monomer, a photopolymerization initiator, and a solvent. In the formula 1, each substituent is defined in the specification.
Patent KR-20140047420-A (KR)
Title: System and method for sharing path information
Inventor: WON EUN KYOUNG
IPC: G01C21/36
Filed: 2012-10-12
Abstract: The present invention relates to a system and a method for sharing route information. The system comprises: user terminal devices for transmitting route information containing moving routes and user input information on the moving routes; and a route information sharing device for storing personal information containing the age, sex, and interests of users who transmit the route information beforehand, displaying the route information on each user terminal device after categorizing the route information received from the multiple user terminal devices based on the personal information of the relevant users, and paying compensation to the users who transmit the relevant route information when the route information displayed on the user terminal devices are used. Accordingly, the present invention can provide the appropriate route information to the characteristics of the users who search the route information and can recommend the route information corresponding to various keywords inputted by the users by collecting the route information from the multiple users and classifying the route information according to the characteristics of the routes and the users who generate the route information. Also, the present invention can share the various route searching information of the users by paying the compensation to the users who provide the route information. [Reference numerals] (AA) Start; (BB) End; (S110) Collect route information from multiple user terminal devices; (S120) Classify the route information according to preset classification standards (Purpose, type, location, required hours, preferred age, and preferred sex of routes; (S130) Receive keywords from the user terminal devices; (S140) Search the relevant route information to the keywords; (S150) Transmit the searched route information to the user terminal devices; (S160) Pay compensation to the providers who provide the relevant route information.
Patent KR-20140047869-A (KR)
Title: Method of separating growth substrate from epitaxial layer and method of fabricationg ligh emitting diode using the same
Inventor: HEO JEONG HUN
IPC: H01L33/12
Filed: 2012-10-15
Abstract: Disclosed are a method for separating a growth substrate and a method for manufacturing a light emitting diode. The method for separating a growth substrate comprises: preparing a growth substrate; forming a mask pattern on the growth substrate; selectively growing a sacrificial layer of a nitride semiconductor on the growth substrate and exposing at least part of an upper area of each mask of the mask pattern; etching the sacrificial layer partially by using electrochemical etching (ECE); covering the mask pattern and forming nitride semiconductor stacking structures; and separating the growth substrate from the nitride semiconductor stacking structures.
Patent KR-20140053617-A (KR)
Title: Load balancing apparatus and method for network access management system of picture monitoring apparatus
Inventor: PARK JIN HUI
IPC: H04L12/28
Filed: 2012-10-26
Abstract: The present invention relates to a load distribution apparatus and method for an access management system of a video monitoring equipment. The present invention is to improve the performance of the access management system of the video monitoring equipment by properly distributing a load of the access management system simply using a hashing technique without any extra load measurement process for load distribution.
Patent KR-20120137325-A (KR)
Title: 블록 퍼즐 게임 및 그 프로그램
Inventor: KIM DONG HWON
IPC: A63F13/00
Filed: 2012-11-05
Abstract: 본 발명은 블록 퍼즐 게임 및 그 프로그램에 관한 것이다. 
     특히, 본 발명은 주어진 블록들 중에서 같은 것들이 3개 이상 인 블록들을 선택하면 선택된 블록조각들이 제거되면서 새로운 블록들이 빈 곳에 채워지는 블록게임에 관한 것으로써, 게임유저가 3개 이상 결합된 동일한 블록을 선택하는 단계; 3개 이상의 블록을 소거하는 단계; 선택되어 사라진 블록에 새로운 블록이 제공되는 단계; 숫자에 비례하여 3개 이상 연속적이지 않은 블록이 선택되어 임의의 다른 블록으로 변화하는 단계; 더 이상 선택할 3개 이상의 동일한 블록조합이 없으면 게임이 종료되는 단계; 3개 이상의 동일한 블록들이 모여있는 것이 있으면 해당 블록조합을 게임유저가 선택하는 단계를 포함한다. 상기와 같은 방식을 통해서 보다 시각적인 즐거움을 게임유저에게 제공할 수 있다. 
       
     블록게임, 퍼즐게임
Patent KR-20140058999-A (KR)
Title: Drilling equipment handling system for a marine structure
Inventor: CHOI GYU HYUN
IPC: B63B27/08
Filed: 2012-11-07
Abstract: The present invention relates to a drilling equipment handling system for a marine structure, comprising a handling unit which is connected by a wire from a winch arranged between the outside of a wind wall arranged along the edge of a drill floor provided on the upper deck of the hull and a crane conveying a riser toward the drill floor, and which is formed on the wind wall by cutting to connect the wire through an inlet being connected between the crane and the drill floor and to transfer or control various equipment inside the drill floor connected with the wire, so that various kinds of heavy materials including a diverter of the drill floor can be handled with small energy consumption by using existing equipment, such as the winch of the hull.
Patent KR-20140060983-A (KR)
Title: Oven to roast entirely
Inventor: LIM JONG WON
IPC: F24C15/00
Filed: 2012-11-13
Abstract: An oven to roast entirely is disclosed. The disclosed oven includes a main body in which an oven cavity for cooking is formed, and a first heater which is installed in the main body to be arranged in the outside of the oven cavity and supplies heat to the oven cavity. The oven further includes a second heater which is installed in the oven cavity to stick millet and bulky meat and generates heat. The surface of the millet and the bulky meat is roasted by the heat of the first heater and the inner part of the millet and the bulky meat is roasted by the heat of the second heater at the same time.
Patent KR-20140064040-A (KR)
Title: 표시 기판 및 이의 제조 방법
Inventor: LEE YONG SU
IPC: G02F1/1368
Filed: 2012-11-19
Abstract: 표시 기판은 베이스 기판, 상기 베이스 기판 상에 배치된 데이터 라인, 상기 데이터 라인과 교차하는 게이트 라인, 상기 베이스 기판 상에 배치된 제1 절연층, 상기 제1 절연층 상에 배치되고, 산화물 반도체를 포함하는 채널, 상기 채널과 연결된 소스 전극, 상기 채널과 연결된 드레인 전극을 포함하는 액티브 패턴, 상기 액티브 패턴 상에 배치되고, 상기 소스 전극 및 상기 드레인 전극과 접촉하는 제2 절연층, 상기 제2 절연층 상에 배치되고, 상기 채널과 중첩하는 게이트 전극, 상기 게이트 전극 및 제2 절연층 상에 배치되는 패시베이션층, 상기 패시베이션층 및 상기 제2 절연층을 통해 형성된 제1 콘택홀을 통해 상기 드레인 전극과 전기적으로 연결되는 화소 전극을 포함한다.
Patent KR-20140065251-A (KR)
Title: Antireflection film with excellent optical characteristics
Inventor: YANG JI YEON
IPC: C08J7/043
Filed: 2012-11-21
Abstract: Provided is an antireflection film as a lamination of a transparent base material, a high refractive layer, and a lower refractive layer. More specifically, the lower refractive layer may contain a siloxane compound, which is a compound of alkoxysilane and organosilane containing fluorinated alkyl, as a binder.
Patent KR-20130058626-A (KR)
Title: Semiconductor device and manufacturing method thereof
Inventor: YAMAZAKI SHUNPEI
IPC: G02F1/13
Filed: 2012-11-23
Abstract: PURPOSE: A semiconductor device and a manufacturing method thereof are provided to form an oxide semiconductor device with high sustainable properties in the upper or lower layer of a semiconductor layer, and prevent the deterioration and breakage of a transistor due to static electricity. CONSTITUTION: A transistor(111) has a semiconductor layer including a gate electrode(202), a source electrode(206a), a drain electrode(206b), and an oxide semiconductor. A first line(212i) is electrically connected to the gate electrode. A second line(216j) is electrically connected to the source electrode. A pixel electrode(210) is electrically connected to the drain electrode through a contact hole(208). A groove part(230) is formed on a part of the first line and a part of a capacitance line.
Patent KR-20140070786-A (KR)
Title: 변기 살균 구조를 갖는 온수 세정기
Inventor: PARK YOUNG SUK
IPC: A61L2/10
Filed: 2012-11-27
Abstract: 본 발명은 변기 살균 구조를 갖는 온수 세정기 및 이를 이용한 변기 살균 방법에 관한 것이다. 
본 발명은 변기에 설치되는 본체와 상기 본체에 상하로 회동 가능하게 설치되는 변좌를 포함하는 온수 세정기에 있어서, 상기 변좌의 하부에는 상기 변기의 상면 테두리에 살균수를 분사하는 림부세척노즐이 설치되고, 가장자리를 따라 가이드 부재가 마련되는 것을 특징으로 하는 변기 살균 구조를 갖는 온수 세정기를 제공한다.
Patent KR-20140070118-A (KR)
Inventor: HEO JIN SUK
IPC: H02N2/18
Filed: 2012-11-30
Abstract: According to an embodiment of the present invention, an energy harvesting device includes at least one first magnet which can rotate making a first circle; at least one piezoelectric cantilever which is located away from a surface on which the first circle is located and can bend in the direction perpendicular to the surface on which the first circle is located; and at least one second magnet which is joined with the at least one piezoelectric cantilever and is overlapped with the first circle.
Patent KR-20140071596-A (KR)
Title: Non-contact infrared temperature sensor module
Inventor: KIM TAE WON
IPC: G01J5/02
Filed: 2012-12-04
Abstract: The present invention relates to a non-contact type infrared temperature sensor module. The non-contact type infrared temperature sensor module is packaged by mounting an infrared temperature sensor and an application specific integrated circuit (ASIC) on a lead frame. To this end, the non-contact type infrared temperature sensor module includes a first mounting pad to which the infrared temperature sensor is mounted on the lead frame arranged on a base and a second mounting pad to which the ASIC is mounted on the lead frame, wherein the first and second mounting pads are separated from each other. A through hole is formed at a position where the first mounting pad is arranged on the base, and the first mounting pad is positioned on the bottom surface of the through hole of the base. Therefore, the non-contact type infrared temperature sensor module of the present invention quickly emits, to the outside, heat generated by the infrared temperature sensor through the first mounting pad exposed to the bottom surface of the through hole of the base. According to the present invention, integration, miniaturization and temperature measurement speed can be improved by removing all external environments except the infrared temperature sensor affecting temperature measurement.
Patent KR-20140076460-A (KR)
Inventor: KU JEONG HUN
IPC: A61N1/18
Filed: 2012-12-12
Abstract: The present invention relates to a rehabilitation training system using a game-based functional electrical stimulus, and more specifically, to a rehabilitation training system using a game-based functional electrical stimulus, comprising: a game apparatus (100) wherein a game is played by game content selected according to a patient`s condition; and a functional electricity stimulator (200) for receiving, from the game apparatus (100), game information of the game played in the game apparatus (100) so as to implement an electrical stimulus to a rehabilitation-needed region adjusted according to the game information. The present invention relates to a rehabilitation training method using the game-based functional electrical stimulus, and more specifically, to a rehabilitation training method using the game-based functional electrical stimulus, comprising: a game play step (S100) for playing a game by the game content selected according to the patient`s condition using the game apparatus (100); and an electrical stimulus step (S200) wherein the functional electricity stimulator (200) receives, from the game apparatus (100), game information of the played game so as to implement the electrical stimulus to the rehabilitation-needed region according to the received game information. According to the rehabilitation training system and the rehabilitation training method using the game-based functional electrical stimulus, suggested in the present invention, if a patient plays game content using the game apparatus, the present invention implements the electrical stimulus to the rehabilitation-needed region adjusted according to the game information, such that the present invention can induce voluntary participation by enabling the patient to find the rehabilitation training interesting and enhance rehabilitation effects by the active participation in the rehabilitation training.
Patent KR-20140077364-A (KR)
Title: Circuit for reducing Direct Current ripple for LED lighting apparatus
Inventor: KIM SUNG IN
IPC: H05B37/02
Filed: 2012-12-14
Abstract: An apparatus for reducing DC ripples for LED lighting according to the present invention includes: a DC voltage converter (10) for outputting DC voltage (Vdc) by receiving AC voltage and converting the AC voltage into DC power; a transistor (Q) having an emitter connected with an outer terminal (OT), a base, and a collector connected with the DC voltage (Vdc); a capacitor (C) having one terminal connected with one terminal of the first resistor (R1) and the other terminal connected with a grounding voltage (Vs); a second resistor (R2) having one terminal connected with the base of the transistor (Q) and the other terminal connected with the one terminal of the first resistor (R1); a zener diode (ZD) having an anode and a cathode, the anode being connected with the base of the transistor (Q), the cathode being connected with the output terminal (OT); and a plurality of diodes (D1, D2, D3) connected with in series between the collector and the emitter of the transistor (Q) so that predetermined voltage is applied between the collector and the emitter of the transistor Q.
Patent KR-20140077519-A (KR)
Inventor: KIM EUN SIL
IPC: C01B32/336
Filed: 2012-12-14
Abstract: The present invention relates to activated carbon in which pores with pore sizes of 0.3-5 nm account for 80% or higher based on an overall pore volume, a manufacturing method thereof, and an electrochemical capacitor including the activated carbon as an electrode active material. According to the present invention, since the activated carbon has uniform-sized fine pores, high-rate discharge characteristics, high-rate charging and discharging characteristics, and low-temperature characteristics can be improved. Since the content of functional groups on the surface of the activated carbon is low, the present invention provides a supercapacitor and lithium ion capacitor with high voltage and improved lifetime property. Moreover, the time for manufacturing an active material can be significantly shortened and thus material costs and process costs can be remarkably reduced.
Patent KR-20130016147-A (KR)
Title: Terminal using the dotted hangeul system for extension of korean alphabet and character input control method thereof
Inventor: KWAK KYONG
IPC: G10L13/08
Filed: 2012-12-18
Abstract: PURPOSE: A terminal using a side dot scripted Hangul system for Hangul letter expansion and a character input control method thereof are provided to write a foreign language as Hangul with a simple method and simply convert the foreign language written as Hangul into the foreign language. CONSTITUTION: A storage unit(400) includes a Hangul character string including a side dot and Hangul characters corresponding alphabets or Hangul characters including the side dot and an audio file about the Hangul character string including the side dot. A control unit(200) displays characters inputted in an input unit(100) on a display unit(300). The input unit includes a function key for selecting side dot input. The control unit displays the characters displaying the side dot on the display unit in response to the input of the function key. The side dot is located within a predetermined distance from the characters and displayed by syllable units. If the function key and a character key is pressed at the same time, the control unit displays the characters displaying the side dot corresponding to the character key on the display unit. [Reference numerals] (110) General function key; (120) Side dot selection key; (130) Text conversion key; (140) Voice conversion key; (200) Control unit; (300) Display unit; (400) Storage unit; (510) Audio processing unit; (520) Speaker; (600) Output unit
Patent KR-20140080112-A (KR)
Inventor: CHOI JAE HOON
IPC: H05K1/11
Filed: 2012-12-20
Abstract: The present invention relates to a metal core substrate and a method for manufacturing the same. According to the present invention, the method for manufacturing a metal core substrate comprises the steps of: forming a metal layer into which connection bridges are inserted; laminating an insulating layer and a copper foil on an upper surface and a lower surface of the metal layer en bloc; and removing the connection bridges.
Patent KR-20140080240-A (KR)
Inventor: KIM MIN GYU
IPC: H01L51/50
Filed: 2012-12-20
Abstract: The present invention relates to a display device capable of facilitating electrical connection when attaching a flexible printed circuit board (FPCB) to a display panel. A display device includes a display panel including a pad region and a display region, a plurality of gate lines and data lines defining a plurality of pixels in the display region; a first pad formed on the pad region and connected to a gate line or a data line; an FPCB having a metal wire formed therein and adhering to the pad region of the display panel; and an anisotropic conductive layer in which conductive balls are distributed to attach the FPCB to the pad region of the display panel. A collecting part for collecting the anisotropic conductive layer is formed on a surface of the first pad so that the first pad is electrically connected to the metal wire of the FPCB.
Patent KR-20140081233-A (KR)
Title: Camera module and housing for camera module
Inventor: KIM HO GYUN
IPC: G03B17/02
Filed: 2012-12-21
Abstract: Disclosed are a camera module and a housing for the camera module. The camera module includes a lens assembly and a housing which has the lens assembly mounted in the inside. A groove-shaped adhesive agent injection area is formed in the housing to inject an adhesive agent to couple the lens assembly and the housing.
Patent KR-20140083760-A (KR)
Title: Display device
Inventor: LEE SEUNG HWAN
IPC: H01L51/50
Filed: 2012-12-26
Abstract: A display device according to an embodiment of the present invention can provide a display device which has at least one short prevention hole to prevent the short between wirings for preventing drive defects caused by an electrical short between a gate signal wiring and an electrical wirings at a region where the gate signal wiring and the electrical wiring are overlapped, and is easily repaired by using a laser cutting if a short occurs.
Patent KR-20140084918-A (KR)
Inventor: HAN JIN SOO
IPC: G06Q50/06
Filed: 2012-12-27
Abstract: In an energy saving evaluation based on a simulation, a device and a method for evaluating energy saving based on a simulation according to the present invention can efficiently manage energy of a building by collecting a usage state of the building and a usage state of heat source equipment in real time, diagnosing whether there is an energy waste element, deriving optimal energy saving measures, calculating an energy saving amount saved according to the energy saving measures, and displaying the calculated energy saving amount along with existing energy usage monitoring results.
Patent KR-20120026613-A (KR)
Inventor: TAO CHUNLIN
IPC: A61K31/53
Filed: 2010-06-08
Abstract: 이 발명은 스티릴-트리아진 유도체를 제공하고, 또한 이들 화합물을 사용하여 단백질 키나아제를 조절하는 방법과, 단백질 키나아제 매개질병을 치료하는 방법을 제공한다.
Patent KR-20120095342-A (KR)
Inventor: WRAY RICHARD
IPC: G01N1/08
Filed: 2010-05-21
Abstract: 관의 내벽으로부터 샘플을 얻기 위한 본 발명의 원주방향 샘플링 도구는 그 안에 개구를 갖는 원통형 몸체를 갖는다. 제 1 및 제 2 커터들은 그와 함께 회전하기 위해 샤프트(shaft)에 작동가능하게 연결되어 있다. 제 1 및 제 2 커터는 퇴축된 위치와 연장된 위치 사이에서 방사방향에서 각각 이동될 수 있다. 제 1 및 제 2 액츄에이터(actuator)들은 샤프트가 회전할 때 그 각각의 퇴축 및 연장 위치들 사이에서 제 1 및 제 2 커터들을 이동시키기 위해 제 1 및 제 2 커터들 각각에 작동가능하게 연결되어 있다. 샤프트를 회전시키면 제 1 커터가 연장 위치로 이동하게 하여 내벽의 일부분을 자른 다음에 제 2 커터가 연장 위치로 이동하게 하여 내벽의 부분을 잘라 드러난 관의 위치로부터 내벽으로부터 샘플을 절단하게 한다.
Patent KR-20120096455-A (KR)
Inventor: SCHELLING HEINER
IPC: C07C265/04
Filed: 2010-06-16
Abstract: 본 발명은 액상 또는 기상으로 아민을 포스겐과 반응시켜 상응하는 이소시아네이트를 형성하고, 후속적으로 2 이상의 단계로 용매를 제거하여 2종 이상의 용매 스트림을 얻고, 2종 이상의 용매 스트림을 각각 처리하고, 용매 스트림의 적어도 일부를 재순환시킴으로써 디페닐메탄 계열(MDI)의 이소시아네이트, 바람직하게는 디이소시아네이트 및 폴리이소시아네이트를 제조하는 방법에 관한 것이다.
Patent KR-20120075456-A (KR)
Inventor: KUBOTA YOSHIHIRO
IPC: B01J6/00
Filed: 2010-08-11
Abstract: 용액이나 폐액 중의 SiC나 Si를 배수 오탁 없이 회수 가능하고, 연삭재, 지립, 연마재로서 이용 가능한 탄화규소를 제조한다. SiC 미립자 및/또는 Si 미립자를 적어도 포함한 용액 또는 폐액을, 탄소 가루 및 산화규소 가루를 적어도 포함하는 분리 조재를 이용하여 고액 분리하여 고체분을 얻는 단계와, 이 고체분을 필요에 따라 탄소 가루 및/또는 산화규소 가루를 포함하는 첨가제와 혼합하는 단계와, 탄화규소를 얻기 위해 이 고체분 또는 첨가제와 혼합된 고체분을, 비산화성 분위기에서 1850℃를 초과하여 2400℃ 미만으로 가열 반응시키는 단계를 적어도 포함하여 이루어지는 탄화규소의 제조 방법을 제공한다.
Patent KR-20120049871-A (KR)
Inventor: GRUMELARD JULIE
IPC: A61Q5/00
Filed: 2010-06-29
Abstract: (a) 하기 화학식 1의 벤질리덴 말로네이트로부터 선택되는 제1 UV 필터; 및 (b) (b 1 ) 비스-에틸헥실옥시페놀 메톡시페닐 트리아진; (b 2 ) 부틸 메톡시디벤조일메탄; (b 3 ) 디에틸헥실 부타미도 트리아존; (b 4 ) 에틸헥실 트리아존; (b 5 ) 디에틸아미노 히드록시 벤조일 헥실 벤조에이트; (b 6 ) 에틸헥실 메톡시신나메이트; (b 7 ) 에틸헥실 살리실레이트; (b 8 ) 호모살레이트; (b 9 ) 옥토크릴렌; (b 10 ) 마이크로화 메틸렌 비스-벤조트리아졸릴 테트라메틸부틸페놀; (b 11 ) 페닐벤즈이미다졸 술폰산; (b 12 ) 이산화티타늄; (b 13 ) 마이크로화 트리스-비페닐 트리아진; 및 (b 14 ) 마이크로화 (2-{4-[2-(4-디에틸아미노-2-히드록시-벤조일)-벤조일]-피페라진-1-카르보닐}-페닐)-(4-디에틸아미노-2-히드록시-페닐)-메타논; (b 15 ) 벤조산,4,4'-[[3-[1,3,3,3-테트라메틸-1-[트리메틸실릴)옥시]-1-디실록사닐]프로필]아미노]-1,3,5-트리아진-2,4-디일]디이미노]비스-, 디부틸 에스테르로부터 선택된 제2 UV 필터를 포함하는 UV 필터 조합물 (여기서, UV 필터 조합물은 성분 (b 1 ) - (b 14 ) 중 2종 이상의 UV 필터를 포함함)의, UV 방사선에 대해 인간 및 동물의 모발 및 피부를 보호하기 위한 용도를 개시한다. 
   
상기 식에서, R 1 은 메틸; 에틸; 프로필; 또는 n-부틸이고; R 1 이 메틸인 경우에, R은 tert. 부틸; 상기 화학식 II; 상기 화학식 III; 상기 화학식 1a의 라디칼; 또는 상기 화학식 1b의 라디칼이고; 여기서 R 2  및 R 3 은 서로 독립적으로 수소; 또는 메틸이고; R 4 는 메틸; 에틸; 또는 n-프로필이고; R 5  및 R 6 은 서로 독립적으로 수소; 또는 C 1 -C 3 알킬이고; R 1 이 에틸; 프로필; 또는 n-부틸인 경우에, R은 이소프로필이다.