baber/WOPTO huggingface dataset:
Patent KR-20110139967-A (KR)
Title: Breaker with rod-guide
Inventor: KANG DAE SIK
IPC: E21B10/00
Filed: 2010-06-24
Abstract: PURPOSE: A low noise breaker comprising a rod guide for reducing noise is provided to efficiently damp noise from a breaker since the space between a thrust ring and a front cover where the expanding of noise occurs by resonance or echo is filled using a rod guide. CONSTITUTION: A low noise breaker(100) comprising a rod guide for reducing noise comprises a chisel case, a chisel(30), and a rod guide(80). The chisel is fixed to the inside of the chisel case to be able reciprocate. The chisel is supported by a front cover(22) and a thrust ring(26). The front cover is coupled to the end of the chisel case. The thrust ring is inserted into the chisel case. The rod guide is manufactured from an elastic material. The rod guide is inserted into a space between the inner front cover and thrust ring of the chisel case. The rod guide comprises a central through hole, through which the chisel can pass.
Patent KR-20120004723-A (KR)
Title: 접히는 냄비 손잡이
Inventor: JUNG SUN WOO
IPC: A47J36/34
Filed: 2010-07-07
Abstract: 본 발명은 더욱 상세하게는 냄비 손잡이를 냄비 쪽으로 접을 수 있게 한다. 냄비 수납을 보다 효율적으로 하기 위한 것이 목적이다. 
이에 따른 본 발명은 냄비손잡이(100)가 접혀서 냄비(101)쪽으로 접히므로 냄비부피가 줄어들어서 냄비 수납을 적은 공간으로도 효율적으로 수납할 수 있다는 것이다.
Patent KR-20120006283-A (KR)
Title: Light emitting device and manufacturing method of the same
Inventor: KIM HAK HWAN
IPC: H01L33/58
Filed: 2010-07-12
Abstract: PURPOSE: A light emitting device and a manufacturing method thereof are provided to arrange a micro lens array on the surface of a lens, thereby improving light extraction efficiency. CONSTITUTION: A light emitting structure(101) is arranged on a substrate(102). A light-transmissive polymer layer(105), a light conversion layer(106), and a lens(107) are arranged on the light emitting structure. A first terminal part(103a) is arranged in the lower surface of the substrate. A second terminal part(103b) is extended along a lateral surface of the substrate from the upper surface of the light emitting structure. An insulator(104) is arranged between the second terminal part, the light emitting structure, and the lateral surface of the substrate.
Patent KR-20120006787-A (KR)
Title: Multipurpose 3dimensional stereo glasses having capability for operating mode selection
Inventor: JEONG SUNG CHUN
IPC: G02F1/1335
Filed: 2010-07-13
Abstract: PURPOSE: Multi-purposed 3D stereographic eyeglasses are provided to select a polarization mode and a shutter mode and to be used in home and theater. CONSTITUTION: Multi-purposed 3D stereographic eyeglasses comprise a right lens(110a), a left lens(110b), an operating selection unit(120), a controller(130), and a power supply unit(150). The right lens and the left lens are composed of liquid crystal which is operated to a shutter mode or a polarization mode. The operating selection unit selects an operating mode of the left lens and the right lens. The controller controls so that an operation of the left lens and right lens is synchronized with the operation of an image display. The power supply unit supplies a power source which is necessary for the right lens, the left lens, the operating selection unit, and the operation of the controller.
Patent KR-20120008360-A (KR)
Title: Substrate for flexible display and manufacturing method thereof
Inventor: SEO SANG JOON
IPC: H01L51/56
Filed: 2010-07-16
Abstract: PURPOSE: A flexible display substrate and a manufacturing method thereof are provided to make a flexible display thin and effectively block oxygen and moisture. CONSTITUTION: A flexible display substrate(100) includes a plastic substrate(110) and a barrier film(120). The barrier film is formed on the plastic substrate. The amount of metal in a concentration gradient layer(121~123) increases as the barrier film gets closer to the plastic substrate. The amount of oxygen in the concentration gradient layer increases as the barrier film gets farther from the plastic substrate. The barrier film includes a plurality of concentration gradient layers.
Patent KR-20110009055-A (KR)
Title: A medical device having an anti-thrombotic conjugate
Inventor: ZHAO JONATHON Z
IPC: A61L27/54
Filed: 2010-07-20
Abstract: PURPOSE: A coating for a medical device is provided, in which an inner layer is formed using a biologically active formulation and polymer. CONSTITUTION: A coating for a medical device is constituted as follows. A method for spreading coating material for a medical device includes a coating step including a conjugate of a biodegradable polymer without Heparin and an additional functional group which is pharmaceutical or biologically active. The biodegradable polymer is prepared through ring opening polymerization from cyclic lactone.
Patent KR-20120001556-A (KR)
Title: Method for design of ehd inkjet printing by using matching logic
Inventor: SHIN KEE HYUN
IPC: H05K3/00
Filed: 2010-07-21
Abstract: PURPOSE: An electronic element printing method using the matching logic for EHD inkjet is provided to use an EHD inkjet printing method and a R2R continuous process for economically mass-produce printing-type electronic elements. CONSTITUTION: An electronic element printing method using the matching logic for EHD inkjet comprises the following steps: setting the kind of an printing-type electronic element; deciding a substrate, an ink, and the processing condition by the kind of the element; determining the values of impedance matching, chemical matching, geometry matching, mechanical matching, and time matching of the element by the matching condition; determining the spec of a R2R system using the matching condition(S90); checking the printed condition of the element using the R2R system, and drying and curing the element(S100,S110,S120); checking the conductivity and other functionalities of the element(S130,S140); and repeating the matching value setting process and the printed condition checking process when a failure is generated.
Patent KR-20110010065-A (KR)
Title: Flux cored wire
Inventor: SHIMAMOTO MASAKI
IPC: B23K35/368
Filed: 2010-07-22
Abstract: PURPOSE: A flux cored wire is provided to improve the mechanical properties of weld metal and to miniature the coagulation structure of the weld metal. CONSTITUTION: A flux cored wire is composed of C 0.02~0.10 weight%, Si 0.05~1.50 weight%, Mn 1.7~4.0 weight%, Ti 0.05~1.00 weight%, TiO2 5.0~8.0 weight%, Al 0.20~1.50 weight%, Al2O3 0.05~1.0 weight%, Mg 0.3~2.0 weight%, N 0.005~0.035 weight%, Fe and inevitable impurities. C, Si, Mn, Ti, TiO2, Al, Al2O3, Mg, and N are added to one or more of a steel outer cover and a flux.
Patent KR-20120012358-A (KR)
Title: Foundation construction methods
Inventor: KIM SUNG PIL
IPC: E02D5/48
Filed: 2010-07-31
Abstract: PURPOSE: A square pyramid foundation and construction method thereof is provided to maintain the optimum stable state of foundation by reducing the pressure of underwater. CONSTITUTION: A square pyramid foundation is composed like next. The pit excavation is performed in a construction field according to design. The ground, in which excavation is completed, is stepped to be even. A square pyramid foundation(100) is established in the design area. Rubble is filled and stepped in the space part formed in the square pyramid in the foundation. A steel reinforcement(32) is arranged in the total area top in which the square pyramid basis is installed. The concrete is poured in the prescribed thickness and cured.
Patent KR-20120021466-A (KR)
Title: Insect repellent having wood vineger as an active ingredient
Inventor: YANG SEUNG HEE
IPC: A01N65/00
Filed: 2010-08-02
Abstract: PURPOSE: A pest repellent containing pyroligneous liquor and plant essential oil is provided to ensure pesticidal effect against pest, especially mosquito, without environmental pollution. CONSTITUTION: A pest repellent contains pyroligneous liquor as an active ingredient. The pyroligneous liquor is prepared by liquefying smoke during burning timbers. The pest repellent further contains essential oil isolated by steam distillation. The plant essential oil is prepared from foeniculi Fructus, lavender leaf, mandarine, citrus terpene, or eucalyptus Bergamot. The essential oil is contained I 5-10 weight parts based on 100 weight parts of pyroligneous liquor.
Patent KR-20120014845-A (KR)
Inventor: LEE MUN YONG
IPC: B24B9/00
Filed: 2010-08-10
Abstract: 롤 포밍 시스템용 버 제거장치가 개시된다. 본 실시예에 따른 롤 포밍 시스템용 버 제거장치는 공정라인의 전방으로부터 언코일러, 스트레이트너, 브레이크 프레스, 롤 포머유닛, 및 라운드 벤더를 포함하는 롤 포밍 시스템의 상기 롤 포머유닛의 전방에 구성되어 패널의 양 측단에 형성된 버 또는 패널의 단면상에 부착된 버를 제거하기 위한 롤 포밍 시스템용 버 제거장치에 있어서,  
상기 패널이 통과하도록 상기 롤 포머유닛의 제1단 롤 포머의 몸체 전면에 고정되는 프레임; 상기 프레임의 내부에서, 상면과 하면의 전방 양측에 설치되어 상기 프레임을 통과하는 패널의 양 측단에 형성된 버를 제거하는 버 제거수단; 및 상기 버 제거수단의 내부에서, 상기 프레임의 후방 양 측면을 따라 이동 가능하게 설치되어 상기 프레임을 통과하는 패널의 상면과 하면에 각각 일정압력으로 접촉된 상태로 버를 패널의 외측으로 배출하는 버 배출수단을 포함한다.
Patent KR-20110055361-A (KR)
Title: Opening apparatus for test handler
Inventor: NA YUN SUNG
IPC: G01R31/26
Filed: 2010-08-11
Abstract: PURPOSE: An opening device for a test handler is provided to easily replace an opening board. CONSTITUTION: An elevation module(210) can elevate. An operation unit is placed on the elevation module. An opening board(220) is placed on the elevation module, elevates by the elevation of the elevation module, and includes a mounting unit and a plurality of opening pins. The mounting unit can be mounted or not mounted on the elevation module according to a manipulation state of a manipulation unit. The opening pins can open an insert of a carrier board. A driving source provides a driving force to elevate the elevation module.
Patent KR-20120017519-A (KR)
Title: A fly flap
Inventor: LEE HONG JIN
IPC: A01M3/02
Filed: 2010-08-19
Abstract: PURPOSE: A fly flap is provided to enable a user to easily catch a fly regardless of his/her age and sex by using the elasticity of the fly flap. CONSTITUTION: A fly flap comprises a main body(10) and a handle(20). The fly flap main body is bent forward due to an elastic material when catches a fly. The fly flap main body prevents the generation of a gap between the fly flap and a fly. The handle is made of an elastic material(21). A spring is used as the elastic material.
Patent KR-20120018033-A (KR)
Inventor: CHOE YU DAL
IPC: A41D27/00
Filed: 2010-08-21
Abstract: 의복의 제작 및 사용방법 및 겉옷의 기능과 형태(패러다임)에 관한 것으로서, 통상적으로 상의와 하의는 따로 제작되고, 각각의 용도와 기능으로 사용되어 왔으나, 발상의 전환을 통하여 치마와 상의 및 바지와 상의를 결합하여 일체형의 옷을 제작함으로써,하나의 새로운 형태의 옷으로서 소용되어 질 수 있도록 제작하거나,분리하였을 때도 독립적으로 기능하며,그로 인한 치마와 바지의 허리띠 조임 현상을 완화시키거나 , 없애주며, 흘러내리려는 힘을 완화 또는 저지시키는 등 여러 기능과 효과를 얻고자하며, 궁극적으로는 벨트와 허리띠 없는 치마와 바지를 구현하려는 기술분야로서, 하의(겉옷), 즉 바지와 치마를 착용할 때, 수직적 힘의 작용에 의한 흘러내림을 방지하기 위하여 제작되는 허리띠와 벨트의 기능 중, 일부 또는 전부를 상의(겉옷)가 담당하게 함으로써, 흘러내림 방지 기능을 보완하고, 벨트나 허리띠에 의한 과도한 조임 현상으로 인한 신체의 부작용과 불편함을 완화 또는 해소시키려는 목적과,허리띠와 벨트의 연결장치가 없는 하의(겉옷)를 구현하거나,필요성을 줄이려는 목적과,심미적이며 품위있고 아름다우면서 실용적인 다양한 의류제조와,디자인과 제작방법의 다양화를 이루고, 새로운 제조방법의 창조와 창의적인 디자인의 활성화를 위하여, 상의(겉옷)와 하의(겉옷)에 상호연결품으로서 암,수로 구성된 연결품인 스냅단추,단추(구멍),똑딱단추,지퍼,연결재단품 등을 서로서로 상대적(암,수로 나누어서)으로 부착시키고,이렇게 서로서로 상대적(암,수로 나누어서)으로 부착된 상호연결품(스냅단추,단추(구멍),똑딱단추,지퍼,연결재단품 등)을 구비한 각 각의 겉옷인 상의(겉옷)와 바지 및 치마가,상호연결품에 의해 결합되어, 일체형 옷을 완성시키는 바, 이때 하의(겉옷)는 벨트나 허리띠를 없앤 연결하의(치마 및 바지)를 상의와 결합하거나,벨트나 허리띠도 있으면서 상호연결품이 구비된 하의(치마 및 바지)와 결합할 수도 있겠으며, 그리고,상호연결품 중 연결재단품도 단일형,멜빵형,부분형,전체형 등으로 구비되어 상의와 하의가 결합될 수도 있는 등, 다양한 방법과 연결품 및 하의의 종류에 따라서 많은 응용된 수단과 방법으로 두 옷을 결합시켜 일체형의 옷을 제조하고 착용함으로써, 획일적이었던 의류의 제조방법과 새로운 의류제조방식의 창조가 이루어지고,다양한 디자인의 의류가 만들어지며,벨트나 허리띠의 기능이 보완되거나 생략하여 하의(치마 및 바지)를 제작할 수도 있으며, 그럼으로써,가벼운 옷을 많이 입는 여름철 등에는 다양한 종류의 디자인의 의류가 탄생되어,실용적이며 심미적이며 품위있는 의류를 만들 수 있고, 의류산업의 활성화에도 기여할 것이며,국제특허를 취득할 수 있다면, 국제적 선점효과를 노릴 수도 있겠읍니다. 
그리고 바지나 치마의 흘러내림을 이중보완하거나,아예 저지시켜 제어할 수 있어서훨씬 심리적,실질적 안정을 가져오게 되겠읍니다.
Patent KR-20110069691-A (KR)
Title: Load balancing apparatus and method for regulating load using the same
Inventor: PARK HONG SHIK
IPC: H04L12/26
Filed: 2010-08-23
Abstract: PURPOSE: A load equalizer device is provided to processes a request of a client according to a state grasp of a server through a work processing delay for server side, standby delay of a network, and a transmission delay of a network. CONSTITUTION: A server delay calculation unit(100) respectively calculates a server delay value through a network transmission delay to each server, a network waiting delay. And a work treatment delay about each server. A connection process unit(110) controls a load allocated to plurality of server based on a delay value of a each server calculated in the server delay calculation unit. A state grasping unit(120) checks the state about the server.
Patent KR-20120019341-A (KR)
Title: Self steering gear for boats
Inventor: LEE IN SOUK
IPC: B63H25/12
Filed: 2010-08-24
Abstract: PURPOSE: A steering device for a ship is provided to easily steer a ship through a simple operation of a direction control valve. CONSTITUTION: A steering device for a ship comprises an air tank(100), a direction control valve(200), a pneumatic cylinder(500), a piston, a slide part(600), and an operating unit(700). The air tank is fixed to a ship and stores compressed air created by an air compressor. The direction control valve is connected to the air tank through an air hose, fixed to the front part of the ship, and operated manually. The pneumatic cylinder has two ports and is connected through an air inlet hose to the direction control valve. The piston is installed inside the pneumatic cylinder and allowed to reciprocate. The slide part is extended to the rear side of the ship by passing through the cylinder, supported with a supporter fixed to the ship, and guided with the supporter to move back and forth. One end of the operating unit is hinged on the backend of the slide part while the other end is coupled with an external device of the ship.
Patent KR-20120019904-A (KR)
Title: Reading desk
Inventor: KIM MIN KI
IPC: A47B23/04
Filed: 2010-08-27
Abstract: PURPOSE: A reading desk is provided to enable a user to comfortably read a book in a state of lying on his side as well as lying flat on the floor since a support supporting the book moves to the left and right along a guide rail. CONSTITUTION: A reading desk comprises a guide rail(10), supports, and a holder(30). The guide rail is formed in a curved shape. The supports are mounted on both ends of the guide rail and support the guide rail against the floor. The holder is coupled to the guide rail. A book is arranged on the front of the supports to support a book. The holder is slidably coupled to the guide rail. The angle of the holder is controlled to the guide rail. The holder comprises a plurality of sliders, a first stopper, a connecting member, a stand(35), a second stopper, a first clip(37), and a second slip(38).
Patent KR-20120022108-A (KR)
Title: Method for predicting size of breakup particle
Inventor: KIM SA YOP
IPC: G01N15/10
Filed: 2010-09-01
Abstract: PURPOSE: A fission particle size prediction method is provided to reflect a through-flow damping effect by a viscous force through a simple equation and accurately predict a size of a particle after the fission. CONSTITUTION: A fission particle size prediction method is as follows. The premeiotic energy of a particle is obtained. The energy after the fission of the particle is obtained. A size of particle is predicted after the fission by using a conservation relation of the energy between the premeiotic energy of the particle and the energy after the fission of the particle. A through-flow damping effect by a viscosity of the particle is reflected when the size of particle is predicted.
Patent KR-20120023323-A (KR)
Inventor: KIM SA YOUNG
IPC: A47J19/06
Filed: 2010-09-02
Abstract: 본 발명은 원통형의 하우징, 상기 하우징 상부에 장착될 수 있는 원형의 상판, 상기 원형의 상판의 하부에 위치하는 원형의 하판, 상기 하판의 하면 중앙부에 형성되는 중공의 축, 상기 중공의 축의 외주면에 형성되는 나사산, 상기 중공의 축을 둘러싸도록 형성되는 원통형의 지지부, 상기 원통형의 지지부 내주면에 상기 나사산과 대응하도록 형성되는 나사홈을 포함하고, 상기 중공의 축이 회전함에 따라 상기 하판이 회전하며 승강 또는 하강되어 상기 상판과 상기 하판 사이에 위치하는 대상물을 착즙할 수 있는 맷돌형 주서기를 제공한다.
Patent KR-20120023966-A (KR)
Title: Control logic of air conditioner in electrical vehicle and driving method thereof
Inventor: KWON JUNG HO
IPC: B60H1/00
Filed: 2010-09-03
Abstract: PURPOSE: An air conditioner control logic and a driving method thereof are provided to prevent a degradation of a range by preventing unnecessary power consumption of an air conditioner because external air inflow amount is controlled according to a target temperature of an evaporator and an outdoor air temperature, and a temperature of discharged air supplied to the inner space of a vehicle through an air conditioner is controlled. CONSTITUTION: An air conditioner control logic comprises a first condition determination unit(110), a second condition determination unit(120), and an air conditioning controller(130). The first condition determination unit outputs a first output signal by detecting whether or not a target temperature of an evaporator satisfies a first condition. The second condition determination unit outputs a second output signal whether or not an outdoor air temperature of the vehicle satisfies a second condition. The air conditioning controller is electrically connected to the first or second condition determination units, thereby receiving the first and second output signals. In a case of satisfying the first condition, a driving of an intake door(140) for mixed-air of indoor and outdoor air is controlled to intake outdoor air according to whether or not the second condition is satisfied.
Patent KR-20120027792-A (KR)
Title: Swash plate type compressor
Inventor: LEE JUNG JAE
IPC: F04B25/04
Filed: 2010-09-13
Abstract: PURPOSE: A swash plate type compressor is provided to improve the performance of compressor by selecting appropriately the diameter of the suction passage. CONSTITUTION: The swash plate type compressor(10) comprises the front head(11), the rear head(28), cylinder blocks(12,12'), the rotary shaft(24), a plurality of pistons(30). The front head and rear head comprise ejection rooms(11a,28a). The front head and rear head are behind combined with the front of the cylinder block. The cylinder block comprises a plurality of cylinder bores(12a) and the suction passage(13') having opening. The rotary shaft is pivotally installed through the front head and cylinder block. The flow path(24') is formed inside the rotary shaft.
Patent KR-20120029800-A (KR)
Title: Apparatus and method for precision loading of light emitting diode wafer
Inventor: RYU IN HWAN
IPC: B65G49/07
Filed: 2010-09-17
Abstract: PURPOSE: An apparatus and method for precisely loading an LED wafer are provided to reduce process time by loading an LED wafer on a carrier. CONSTITUTION: A transfer robot(40) transfers an LED wafer from a cassette(10) to an aligning unit(93). A picker absorbs and releases an LED wafer which is transferred from the alignment unit. An imaging unit(80) fixes the picker and obtains location information of the pocket. An LED wafer mounting robot(95) transfers the picker and the imaging unit from the aligning unit to a carrier(30).
Patent KR-20120029819-A (KR)
Title: Camera module
Inventor: NAM SEUNG JUN
IPC: G03B17/02
Filed: 2010-09-17
Abstract: PURPOSE: A camera module is provided to doubly shield an EMI(Electro-Magnetic Interference) generated in a camera module because a joining part and stepped part are shielded together by a second shield case. CONSTITUTION: A camera module(200) comprises a lens module, a PCB(Printed Circuit Board)(220), AF(Auto-Focusing) actuator module, and first and second shield cases(230,260). The lens is mounted in the lens module. The PCB is joined to the lens module. The AF actuator module drives the lens module and has a joining part. The first shield case covers the exterior of the AF actuator module. The second shield case covers the exterior of the first shielding case to cover the joining part of the shield case.
Patent KR-20120031590-A (KR)
Title: A bicycle
Inventor: GIM GUK JIN
IPC: B62M9/02
Filed: 2010-09-27
Abstract: PURPOSE: A bicycle is provided to allow a rider to restart a stopped bicycle without getting off the bicycle or putting a foot on the ground. CONSTITUTION: A bicycle comprises a front sprocket which is coupled to pedals, a rear sprocket(120) which is formed with an insertion part inside thereof, a chain(130) which connects the front and rear sprockets, and a stand(140) with a coupling part which is coupled to the insertion part.
Patent KR-20120032288-A (KR)
Title: Method for producing bonded substrates
Inventor: YU YULIA
IPC: H01L21/48
Filed: 2010-09-28
Abstract: PURPOSE: A bonded substrate manufacturing method is provided to reduce manufacturing costs and simplify manufacturing processes by easily bonding two different substrates while maintaining the quality of each substrate. CONSTITUTION: A bonded substrate manufacturing method is comprised of the following procedures. A first substrate and a second substrate are polished(S211). The polished first and second substrates are washed(S212). A bonded substrate is formed by bonding the first substrate and the second substrate(S213). The bonded substrate is cooled(S214).
Patent KR-20120034303-A (KR)
Title: Mobile terminal and method for controlling thereof
Inventor: WOO SEUNG HYUN
IPC: G06F3/01
Filed: 2010-10-01
Abstract: PURPOSE: A mobile terminal and a control method thereof are provided to efficiently check an alarm whether to change a two-dimensional image into a three-dimensional image on a display unit. CONSTITUTION: A display unit(151) includes a time difference generating unit for displaying a three-dimensional image of a stereoscopic type. A control unit(180) determines whether for the three-dimensional image to be outputted through the display unit. The control unit gives visual effect when the three-dimensional image is outputted.
Patent KR-20120034471-A (KR)
Inventor: KANG YOUNG SUK
IPC: E04B1/00
Filed: 2010-10-01
Abstract: PURPOSE: A pipe fixing device is provided to improve workability because a pipe can be easily installed and separated. CONSTITUTION: A pipe fixing device comprises a fastening plate(100), a fixing member(110), and a moving member(120). The fastening plate is fixed in a wall. The fixing member is arranged in the fastening plate in an arch shape and supports one end of a pipe(P). The moving member is rotatably connected to the fixing member by a hinge(H). The moving member covers a part of the pipe.
Patent KR-20100119852-A (KR)
Title: Small cam compound bow
Inventor: PARK KYUNG SIN
IPC: F41B5/14
Filed: 2010-10-23
Abstract: PURPOSE: A compound bow having a small cam which forms a distance between shafts short by using a Y-cam is provided to reduce vibration and noise by reducing the rotational inertia of a cam. CONSTITUTION: A compound bow comprises a riser(R), a limb(L), bus cables, a string(S), and a Y-cam(YC2). The cam has a groove branched in a Y-shape. The entire size of a bow is reduced to enable a user to conveniently carry the compound bow since a cam around the outer part of a distance between shafts is reduced.
Patent KR-20120044645-A (KR)
Title: Hydroxycinnamoyl-amino acidyl-hydroxamic acid derivatives
Inventor: LEE YOON SIK
IPC: A61Q17/04
Filed: 2010-10-28
Abstract: PURPOSE: Hydroxycinnamoic acid-amino acid-hydroxamic acid derivatives are provided to restrain enzyme activation like tyrosinase, etc, thereby having excellent antioxidant effect and whitening effect. CONSTITUTION: A hydroxycinnamoic acid-amino acid-hydroxamic acid derivative is in chemical formula 1. In chemical formula 1, R^1=R^2=OH and R^3=H, or R^1=OCH3, R^2=OH and R^3=H, or R^1=R^3=OCH3 and R^2=OH, and R^4 is asparagine, cysteine, glutamine, glycine, serine, threonine, tyrosine, lysine, aspartic acid, glutamic acid, arginine, histidine, alanine, valine, leucine, isoleucine, methionine, phenylalanine, tryptophane, or proline.