baber/WOPTO huggingface dataset:
Patent KR-20020027998-A (KR)
Inventor: JOO KI SEE
IPC: G06F3/14
Filed: 2000-10-06
Abstract: PURPOSE: A product order display system is provided to offer the information of an order in real time by using a telephone line instead of an Internet line when a customer purchases articles. CONSTITUTION: The system comprises a communication unit(100) transmitting the data transmitted from the outside, a central processing unit(200) storing the data, and a display unit(300) displaying the data outputted from the central processing unit. The communication unit consists of a connecting unit and a communication control unit. The connecting unit is a 5-pin connector connected to a modem using a general telephone line. The communication unit is an MAX233 chip. The data transmitted via an external communication line are transferred to the central processing unit via TxD(T1IN) and RxD(T1OUT) of the MAX233 chip. The data processes the information of articles and a purchaser, and transfers the processed information to the display unit.
Patent KR-20020028307-A (KR)
Title: device for rectifying circular air in gas furnace
Inventor: HAN IN HUI
IPC: F24C15/28
Filed: 2000-10-09
Abstract: PURPOSE: A device for rectifying circulating air of gas heater is provided to improve efficiency of heat exchange by rectifying flow of circulating air taken in by a convection fan to concentrically supply to a heat exchanging device on a hot air route. CONSTITUTION: A device includes a convection fan(7); a fan housing(8); and a rectifying guide(20). The convection fan is placed on one side of a case(1) to forcibly take in and circulate outside air. The fan housing holds the convection fan and guides circulating air to a heat exchanging device(4). The rectifying guide is installed on an outlet of the fan housing to concentrate flow of circulating air discharged to the heat exchanging device.
Patent KR-20020030679-A (KR)
Inventor: SHIN HEE TEAK
IPC: G07F11/00
Filed: 2000-10-19
Abstract: PURPOSE: A method for selling fruit using a vending machine is provided to enable a user to eat fresh fruit immediately at the same time with the purchase of the fruit regardless of place and time. CONSTITUTION: The conventional vending machine is reorganized into a system capable of storing various fruit while maintaining the freshness of the fruit, and furthermore, in order to allow a user to immediately eat the fruit purchased, the vending machine sells a disposable fruit knife, a disposable plate, and a sanitary tissue paper. In addition, a user can cut the fruit into an appropriate size of pieces on a stand attached to the side surface of the vending machine.
Patent KR-20020011844-A (KR)
Title: Method for using dynamic internet protocol address as static internet protocol address by means of forwarding on internet base and advertising method using the method
Inventor: SHIN HO CHUL
IPC: G06F17/00
Filed: 2000-10-23
Abstract: PURPOSE: A method for using a dynamic Internet protocol address as a static Internet protocol address is provided to smoothly and simply activate an Internet business by forwarding a dynamic IP address relevant to a domain name for matching a variable IP address to a static domain name, and by enabling a user to connect to a homepage or a shopping mall only with the domain name regardless of the IP address. CONSTITUTION: An operator connects to the Internet(S20). In case that the connection to the Internet is completed, a client program is executed(S21). The operator inputs an ID and a password and pushes a connection button. In addition, the operator tries to connect to a main server(S22). A main server confirms the ID and the password inputted from data constructed in a database(S23). In case that a registered customer is confirmed, the main server opens a port and connects with the operator(S24). The main server forwards a dynamic IP address of the operator to a domain name relevant to an ID of the operator(S25). The main server confirms whether the connection is normal(S26). In case that a customer pushes a button for cutting off a connection, the time for terminating the connection is recorded(S27). The termination of the connection is reported to the operator(S28).
Patent KR-20020033924-A (KR)
Title: A method for manufacturing soft cold rolled steel sheet by hot direct rolling method
Inventor: KANG HUI JAE
IPC: B21B1/02
Filed: 2000-10-31
Abstract: PURPOSE: A method for manufacturing a soft cold rolled steel sheet by hot direct rolling method is provided to improve deep drawability by controlling reduction ratio of rough rolling and finish rolling. CONSTITUTION: In a manufacture method of soft cold rolled steel sheet by hot direct rolling method where after continuous casting of ultra low carbon steel, steel strips are subjected to rough rolling, finish rolling, pickling, cold rolling, and continuous annealing, the method is characterized in that finish rolling is conducted in ferrite zone at less than 890°C, reduction schedule is controlled to be 1.0-3.5 in the ration of reduction of rough rolling to finish rolling.
Patent KR-20020037486-A (KR)
Title: Sensing control circuits in semiconductor device and layout thereof
Inventor: JU JAE HUN
IPC: G11C7/06
Filed: 2000-11-14
Abstract: PURPOSE: A sensing control circuit and a layout of a semiconductor memory device are provided, which improves a sensing speed and reduces a layout area by realizing a power transistor of sufficient size by arranging the power transistor of a sense amplifier in the sense amplifier. CONSTITUTION: Between a pair of cell arrays(100,124), the first equalizer circuit(102), the first isolation circuit(104), the first PMOS sense transistor(106), the first power transistor(108), the second PMOS sense transistor(110), a CSL circuit(112), the first NMOS sense transistor(114), the second power transistor(116), the second NMOS sense transistor(118), the second isolation circuit(120) and the second equalizer circuit(124) are arranged in sequence along a pair of horizontal bit lines(BL,BLB). That is, the power transistors are arranged between sense transistors. According to the layout, a power contact is arranged between the two bit lines, and a power gate is arranged around the power contact. And a number of sense transistor gates are arranged around the power gate. A pair of control line contacts are arranged in the outside of the bit lines, and a control line is connected to the power gate through the control line contact. And a power line is connected to an active region surrounded by the power gate through the power contact.
Patent KR-20020037638-A (KR)
Title: Optical pickup apparatus for read/write heads in high density optical storages
Inventor: SONG TAE SUN
IPC: G11B7/09
Filed: 2000-11-15
Abstract: PURPOSE: An optical pickup device for high-density optical recording and playback is provided to increase the number of apertures while using an SIL(Solid Immersion Lens) in a plate side of an optical recording medium, so that a size of an optical spot is reduced. CONSTITUTION: An optical module(100) generates and emits light, and receives light emitted in an optical recording medium(200). An objective lens(160) for light collecting arranged in an optical path between the optical module and the optical recording medium, collects light emitted from the optical module to a signal recording surface(202). An SIL(180), arranged in an optical path between the objective lens for light collecting and the optical recording medium, has a first surface(181) formed in plane and a second surface formed in spheric, wherein the first surface is toward a plate(201) of the optical recording medium and the second surface is toward the optical module. The SIL collects beam from the objective lens for light collecting, and images the beam in the signal recording surface of the optical recording medium after passing the plate of the optical recording medium. And the SIL is made of materials having a refractive index identical a refractive index of the plate of the optical recording medium.
Patent KR-20010051723-A (KR)
Inventor: HASEGAWA TOSHIO
IPC: C23C16/458
Filed: 2000-11-16
Abstract: PURPOSE: A forming method for a precoat film is provided to improve throughput without necessity to decrease the temperature of a mounting base even during an idling period by stabilizing the precoat film. CONSTITUTION: The forming method for a precoat film for mounting base structure has a depositing process for depositing the precoat film(22) composed of a TiN film on the surface of a mounting base(16) for placing an object to be treated by making a treatment gas flow into a film forming device internally having a mounting base structure having the mounting base and a stabilizing process for stabilizing the precoat film by exposing the mounting base under a gas contg. NH3(ammonia) while maintaining the temperature of the mounting base higher than the temperature of the depositing process.
Patent KR-20020039544-A (KR)
Title: patch containing local anaesthetic
Inventor: CHOI YEONG GWON
IPC: A61K9/70
Filed: 2000-11-22
Abstract: PURPOSE: A patch for local anaesthesia is provided, therefore the dosage amount of a drug can be easily regulated and the transdermal absorption of a drug can be significantly improved, so that rapid anaesthesia can be accomplished. CONSTITUTION: The patch for local anaesthesia consisting of a supporting film, a matrix layer containing drugs and a releasing film comprises 5 to 40 wt.% of hydrogel forming macromolecule; 1 to 20 wt.% of local anesthetic, 30 to 70 wt.% of solvent and dissolution assisting agent; and 1 to 20 wt.% of transdermal transfer improver, in which the hydrogel forming macromolecule is a mixture of 0.5 to 10 wt.% of polyvinylalcohol, 0.5 to 15 wt.% of poly(met)acrylic acid or multivalent metal salt thereof; and 0.5 to 10 wt.% of anhydrous maleic acid/vinylether copolymer; the local anesthetic is selected from lidocaine. prilocaine, tetracaine, dibucaine, benzocaine, cocaine, pranoxine, dicromine and propacocaine; and the solvent and dissolution assisting agent is water, ethanol, multivalent alcohol and triacetin.
Patent KR-20020041647-A (KR)
Inventor: HWANG SANG MUN
IPC: H01M10/0569
Filed: 2000-11-28
Abstract: PURPOSE: Provided is a non-aqueous electrolyte for preparing a lithium battery excellent in high ratio discharge property at a low temperature and charge/discharge cycle lifetime property. CONSTITUTION: The non-aqueous electrolyte is produced by adding 0.1-10.0pts.wt. of ethyl-2,2-£(methylsulfonyl)oxy|propionate to 100pts.wt. of a mixed organic solvent, in which 0.8-2.0M of lithium salts are dissolved, comprising a cyclic carbonate-based organic solvent and a linear carbonate-based organic solvent, wherein the cyclic carbonate-based organic solvent is ethylene carbonate, propylene carbonate, or a mixture thereof and the linear carbonate-based organic solvent is dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate, methylpropyl carbonate, ethylpropyl carbonate, or a mixture thereof and the lithium salt is at least one selected from the group consisting of LiPF6, LiClO4, LiAsF6, and LiBF4.
Patent KR-20020044356-A (KR)
Title: Electric power steering apparatus for vehicle
Inventor: KIM JONG GAP
IPC: B62D5/04
Filed: 2000-12-05
Abstract: PURPOSE: An electric power steering device of a vehicle is provided to remove the problems of a hydraulic system by excluding a hydraulic system, to reduce the assembling processes, cost and weight of a power steering device, and to improve fuel efficiency by increasing the freedom of design. CONSTITUTION: An electric power steering device of a vehicle comprises a steering gear for performing steering by converting the rotational force of a steering wheel into a linear reciprocating motion, an electric motor(14) for assisting the steering motion, a sensor(10) for detecting the state of a vehicle, and a controller for controlling the electric motor depending on the signals outputted from the sensor. Since electricity is used instead of hydraulic pressure, work efficiency is improved.
Patent KR-20020045179-A (KR)
Title: Textile ink components and manufacuring method of the same
Inventor: LEE SUNG KI
IPC: D06P1/00
Filed: 2000-12-08
Abstract: PURPOSE: An ink composition for textiles, a pretreatment solution for cellulose fiber and its preparation method are provided, which composition is used to allow cellulose fiber to be dyed directly by using a printer with improved adhesion. CONSTITUTION: The ink composition for textiles comprises 1-10 wt% of a reactive dye; 15-30 wt% of an organic solvent; and the balance of distilled water. Preferably the ink composition for textiles comprises further 15-30 wt% of a moisturizing agent; 0-1 wt% of a surfactant; and 0.1-0.3 wt% of a preservative. The pretreatment solution for cellulose fiber comprises 5-10 wt% of urea; 1-5 wt% of alkali; 0-2 wt% of sodium alginate; and the balance of distilled water.
Patent KR-20020047829-A (KR)
Title: Checker assembly combined with door hinge
Inventor: KIM SEOK BONG
IPC: E05D11/08
Filed: 2000-12-14
Abstract: PURPOSE: A chair assembly and a hinge of a car door in one is provided to reduce parts of the car and numbers of workers and to reduce the time of working by unifying a hinge connecting the door and the car body and the door chair assembly controlling the condition of opening the door. CONSTITUTION: The chair assembly and the hinge of the car door in one includes the first body(10), a rotating axis(20), a body(30) and an angle controlling board(40). The first body(10) is installed on the car body side. The circular body(30) is composed of the second body. The angle controlling board(40) controls the degree of opening of the car door. The first body(10) and the second body are connected by the rotating axis(20). The first rod and the second rod are sticked on a side of the body(30). A return spring returns the angle controlling board(40) to the original condition when the car door is closed.
Patent KR-20020047980-A (KR)
Title: Method for Managing Additional Information of Mobile Communication terminal Using the Internet
Inventor: SON SEONG MU
IPC: H04W4/00
Filed: 2000-12-15
Abstract: PURPOSE: Supplementary information managing method of a mobile communication terminal using the Internet is provided to manage supplementary information by storing the information such as phone numbers or daily schedules also in a server on the Internet connected to a mobile communication service network, and recover the supplementary information stored in a terminal by backup when the terminal is lost. CONSTITUTION: A supplementary information server recognizes a mobile communication terminal phone number of a subscriber through subscriber information and recognizes a mobile phone service provider of the subscriber(S500). The supplementary information server transmits the input information of the subscriber to a mobile exchange of the mobile phone service provider corresponding to the subscriber who has inputted the supplementary information(S501). The mobile exchange detects location information of the subscriber who intends to transmit the supplementary information through a home location register(S502). Upon detecting the location information of the subscriber, the mobile exchange transmits the information inputted to the supplementary information server to a base station of a cell where the subscriber is located(S503). In transmitting the information inputted to the supplementary information server to the subscriber mobile communication terminal, it is determined whether the subscriber mobile communication terminal is busy(S504). If the subscriber terminal is busy, since a speech channel is already set up with a base station, the inputted supplementary information is transmitted to the terminal through the speech channel(S505). If the subscriber terminal is not busy, the supplementary information inputted is transmitted to the subscriber mobile communication through a control channel(S506). Upon receiving the input information to the supplementary information server, the subscriber terminal analyzes a header of the received information(S507), and as the subscriber terminal recognizes the information in need of inputting of the changed supplementary information, it stores the received subscriber input information in the terminal to have the same supplementary information data as stored in the supplementary information server(S508).
Patent KR-20020051266-A (KR)
Title: Apparatus for examining the surface default of the coil product
Inventor: JUNG HA MU
IPC: G01N19/08
Filed: 2000-12-22
Abstract: PURPOSE: A surface defect inspection apparatus for coil product is provided to achieve an optimum productivity, reduced cost and in-advance prevention against accident, by automating surface defect inspection process. CONSTITUTION: A surface defect inspection apparatus comprises a coil rotating unit(100) for loading a coil(10), and unwinding the coil to the inspection position and winding the coil after completion of the inspection; a coil reducing unit(200) for preventing the front end of the coil from moving in the opposite direction during coil winding or unwinding operation; a table unit(300) for advancing the released front end of the coil; a tension transfer unit(400) for transferring the front end of the coil by providing tension to the front end, and maintaining tension at an iron sheet during cutting; a cutter(500) for cutting the defective part of the iron sheet; an inspection unit(600) for performing surface test and shape test for the front and rear surfaces of the iron sheet; a pipe unit for feeding air or hydraulic pressure; and a control unit for controlling the system.
Patent KR-20020052522-A (KR)
Title: Method for shifting rear range to neutral range controlled of automatic transmission
Inventor: DO GYU CHEOL
IPC: F16H61/02
Filed: 2000-12-26
Abstract: PURPOSE: A method for controlling forward speed change during reverse moving in an automatic transmission is provided to reduce the shock of speed change when shifting into D-range and to improve durability of an automatic transmission. CONSTITUTION: The position of gear-shifting lever of an automatic transmission is detected to control forward speed change during reverse moving in an automatic transmission(102). The rotational frequency of the engine is detected(104). The opening rate of a throttle valve is detected(106). The output shaft RPM(revolution per minute) is detected(108). One-range speed change control motion is performed by calculating the value input from each sensor if the detected opening rate of the throttle valve and the output shaft RPM are below the predetermined value with state of positioning from R-range into D-range and idle state(110).
Patent KR-20020055797-A (KR)
Title: Film for Growing Vegetables Seed and Vegetables Seed Mat Using the Same
Inventor: HUN KYUNG
IPC: A01G13/00
Filed: 2000-12-29
Abstract: PURPOSE: A plant sprouting film and a seed mat using the same film are provided, thereby inhibiting vaporization of water in soil and providing water to the plant evenly. CONSTITUTION: The plant sprouting film has a vinyl sheet(10) containing numerous ventilation holes(11) having a regular size at a regular interval, wherein the ventilation holes have a diameter of 2 to 100 mm; and the ventilation holes have a distance of 7 to 300 mm between each hole. The seed mat comprises a vinyl sheet(20), an adhesive material layer(22), a vegetation ground layer(24), and plant seeds(26), sequentially, wherein the vinyl sheet(20) is polyethylene having a thickness of 0.03 to 0.04 mm; the adhesive material layer(22) contains an adhesive agent. The seed mat may further comprise a herbicide layer inhibiting the growth of weeds.
Patent KR-20010023245-A (KR)
Title: 편심 페이스너를 갖는 열가소성 백
IPC: B65D33/25
Filed: 1998-08-25
Abstract: 재밀폐 가능한 열가소성 백(10)은 편심 페이스너를 갖는다. 백은 제 1 및 제 2 측벽(11,12)을 포함하고, 각 측벽은 상부(23a,23b)와, 저부(25a,25b), 및 2개의 대향하는 측부 가장자리(16,17)를 가지며, 제 1 및 제 2 측벽들은 각 저부와 측부 가장자리를 따라 서로 접착된다. 백은 제 1 측벽(11)을 가로질러 위치한 내측으로 접혀진 상부 주름(13)을 포함한다. 또한, 백은 적어도 2개의 연동식 차폐 부재를 갖는 재밀폐 가능한 페이스너(14)를 포함하고, 두 부재중 하나는 주름 상부의 제 1 측벽의 상부에 인접하게 위치되고, 다른 하나는 제 2 측벽의 상부에 인접하게 위치되어, 백이 채워져 밀폐되면, 재밀폐 가능한 페이스너는 편심된다.
Patent KR-20010023592-A (KR)
Title: 결합된 코히어런트와 논코히어런트 평균을 최적화하는평균 영역 제한형 적응형 간섭계 필터
IPC: G01S13/90
Filed: 1999-06-25
Abstract: 임펄스 응답 폭을 국부 데이터 특성에 자동 적응시켜 간섭 측정의 정확도, 수율 및/또는 정밀도를 최적화하는 일군의 다중 스케일 적응 필터(20) 및 필터링 방법(20)이 개시되어 있다.  고정 임펄스 응답 폭을 가진 프리필터(10)가 복소 인터페로그램에 이용된다.  프리필터링된 복소 인터페로그램의 위상이 언랩핑된다(25).  그 다음, 고정 필터링되고 위상 언랩핑된 인터페로그램의 가중 조합이 데이터 종속 기준 함수를 사용하여 연산된다(30).  각 해상 소자에서의 결과적인 가중 함수는 대개 당해 해상 요소에서의 각 고정 필터 출력에 대한 인터페로그램 크기 및 코히런스의 비선형 함수이다.
Patent KR-20010030972-A (KR)
IPC: C25B11/02
Filed: 1998-10-05
Abstract: 본 발명은 탈이온화 셀(80)을 가지는 기구에 관한 것이며, 그 각각의 셀은 2개의 상이한 전극(20, 22)을 가진다. 첫번째 전극(22)은, 탄화된 형태의, 레조르시놀, 포름알데히드, 탄소 보강재, 촉매 및 그 반응 생성물로부터 제조된 높은 표면적 흡수 재료("HSAAM")로 형성되었다. 두번째 전극(20)은, 탄소 클로스 또는 탄소 펠트와 같은 비-HSAAM 재료로 형성되었다. 각각의 탈이온화 셀(80)은, 양쪽면상에 비-HSAAM 전극(20)이 위치하는 하나의 HSAAM 전극(22)을 가지며, 인접한 셀은 양쪽 유형의 전극을 공유하지 않는다. 탄소 섬유, 탄소 펠트 또는 셀룰로오스의 형태로 제공된 탄소 보강재, 포름알데히드 및 레조르시놀의 중합된 혼합물을 제어된 온도 및 시간 제한 하에서 경화시킨 후에, 전극을 탄화시키기 위해 생성되는 제품을 소성시킴으로써, HSAAM 전극(22)을 제조하는 방법이 본 발명에 개시되어 있다.
Patent KR-20010034371-A (KR)
Title: 인장 마스크로 이루어진 음극선관용 컬러 선택 수단
IPC: H01J29/07
Filed: 1999-11-15
Abstract: 마스크(50)가 인장 상태로 신장되고, 지지 프레임에 연결되는 컬러 선택 수단이 기술된다. 지지 프레임은 정확하게 마스크 윤곽선(mask contour)을 결정하며, 마스크와 프레임 작용의 팽창 차가 조절될 수 있도록, 마스크는 가요성 방식(flexible way)으로 이런 프레임에 연결된다. 이런 연결 수단은 러그 또는 탄성 요소(59)일 수 있다. 이러한 컬러 선택 수단은 적어도 실질적으로 평평한 디스플레이 스크린을 구비하는 컬러 디스플레이 관에 사용될 수 있다.
Patent KR-20010040657-A (KR)
Title: 자동차의 유리창용 와이퍼 블레이드와 와이퍼 암의 관절식연결 장치
IPC: B60S1/38
Filed: 1999-07-31
Abstract: 와이핑 블레이드로부터 연장되고 역전 위치들 사이에서 와이퍼 구동체에 의해 작동되고 장치에 속하는 암 측 결합 부재(21)가 배치되어 있는 와이퍼 암(20)을 구비하고 있으며, 자동차의 창을 위한 와이핑 블레이드(10)를 관절적으로 연결하는데 사용되는 장치(16)가 추천되어 있다.  이 연결 장치(16)는, 장치에 속하고 결합 부재(21)와 관절적으로 연결될 수 있는 와이핑 블레이드 측 결합 소자(18)를 구비하고 있으며, 결합 소자는, 밴드 모양으로 길이로 연장되고 스프링 탄성을 지닌 지지 소자(12)의 중앙 섹션에서 창에서 먼 쪽의 지지 소자의 상부 밴드 면(14)에 배치되어 있고, 창(30)에 가까운 지지 밴드(12)의 하부 밴드면(22)에는 창에 접할 수 있고 지지 소자에 대해 종축선 평행하게 배향된 와이핑 살(24)이 있으며, 와이핑 블레이드(10)의 각 종측면으로부터 결합 소자(18)에 배치된 관절축(41)이 돌출하고, 이들 관절축(41)의 공동 축선(42)은 와이핑 블레이드 종방향에 대해 횡방향으로 창에서 격리된 평면에서 연장되고 있고, 블레이드 측 관절 수단을 형성하는 관절축(41)의 각각은 관절축에 할당되어 있고 와이퍼 암 측 관절 수단을 형성하는 결합 부재(21)의 저류 절결부(44) 내에 맞물려 있다.   와이핑 블레이드(10)에는, 지지 소자(12)의 상부 밴드면(14) 측에, 결합 소자(18)의 양측에서 와이핑-블레이드-종축으로 연장되고  흐름 유로(28)를 가진 방풍 살(26)이 배치되어 있으면, 또한 연결 장치(16)의 적어도 와이퍼 암 측 결합 부재(21)에는, 방풍 살(26)의 종방향으로 연장되는 흐름 면(54)이 형성되어 있으면, 차  바람에 의한 소음이 최소로 발생하면서 와이핑 블레이드(10)가 창으로부터 분리되려는 소망스럽지 않은 경향이 크게 개선될 수 있다.
Patent KR-20010085220-A (KR)
Title: 무손실 인코더에서의 부수 정보의 효과적인 코딩
IPC: H03M7/40
Filed: 1999-12-24
Abstract: "슈퍼 오디오(Super Audio) CD(SACD)"에 대해, DSD 신호는 프레임화, 예측 및 엔트로피 코딩을 사용하여 무손실 코딩된다. 효과적으로 인코딩된 신호 이외에, 다수의 파라미터, 즉 부수 정보가 SACD 상에 마찬가지로 저장되어야 한다.  부수 정보는, 인코딩하기 위해 사용되며, 디코더로 전송되어야 하는 예측 필터 계수와 확률표를 포함한다. 부수 정보에 필요한 저장용량이 작으면 작을수록, 전체적인 코딩 이득이 더 좋아진다. 따라서, 코딩 기술이 부수 정보에 적용되어, 부수 정보의 데이터 양을 압축한다.  복수의 프레임은 분할될 수 있으며, 각각의 세그먼트는 그 자신의 필터 계수 세트와 확률표를 갖는다.
Patent KR-20010034861-A (KR)
IPC: A01N37/28
Filed: 1999-05-14
Abstract: Compounds of formula (I) are antibacterials:   
wherein: 
R 1  represents hydrogen; R 2  represents a group R 10 -(X) n -(ALK) m - wherein R 10  represents hydrogen, or a C 1 -C 6  alkyl, C 2 -C 6  alkenyl, C 2 -C 6  alkynyl, cycloalkyl, aryl, or heterocyclyl group, any of which may be unsubstituted or substituted by (C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, hydroxy, mercapto, (C 1 -C 6 )alkylthio, amino, halo (including fluoro, chloro, bromo and iodo), trifluoromethyl, cyano, nitro, -COOH, -CONH 2 ,-COOR A , -NHCOR A , -CONHR A , -NHR A , -NR A R B , or -CONR A R B  wherein R A  and R B  are independently a (C 1 -C 6 )alkyl group, and ALK represents a straight or branched divalent C 1 -C 6  alkylene, C 2 -C 6  alkenylene, or C 2 -C 6  alkynylene radical, and may be interrupted by one or more non-adjacent -NH-, -O- or -S- linkages, X represents -NH-, -O- or -S-, and m and n are independently 0 or 1; and A represents a group as defined in the specification.