baber/WOPTO huggingface dataset:
Patent KR-20050013001-A (KR)
Inventor: HONG JONG CHEOL
IPC: H04B7/00
Filed: 2003-07-26
Abstract: PURPOSE: A method for exchanging information and/or data between telematics is provided to exchange real-time information and/or data by connecting a wireless communication session based on position information of each telematic, thereby enabling a P2P function between cars while transceiving information on various contents. CONSTITUTION: A system extracts current position information on a transmitting telematic and a receiving telematic through a network identification information transceiving process between the transmitting and receiving telematics(300-325). The system determines a communication unit for connecting a wireless communication session between the transmitting and receiving telematics based on the current position information(330-340). The system connects the wireless communication session between the telematics by using the determined one communication unit(345). The system exchanges information and/or data in real time between the telematics while maintaining the connected wireless communication session(370,375).
Patent KR-20050016851-A (KR)
Inventor: OH EUN TAEK
IPC: H04B1/38
Filed: 2003-08-04
Abstract: PURPOSE: A case coupling structure of a mobile communication terminal is provided to attach a waterproof elastic packing to a coupled part between synthetic resin cases, thereby preventing moisture from permeating into the inside of a terminal, consequently a product life can be extended. CONSTITUTION: A mobile communication terminal consists of a body(10), a folder(20) rotatively coupled with the body(10), and a battery pack(30) detachably combined with a rear side of the body(10). The folder(20) forms an external shape by one pair of upper/lower case members(22,26) faced together. The upper/lower case members(22,26) are cut in a direction that edge portions(22a,26a) thereof are faced together, and mutually couple cut ends. The upper/lower case members(22,26) are coupled while fixing a waterproof elastic packing(40) to a coupled part between the edge portions(22a,226a).
Patent KR-20050015577-A (KR)
Inventor: PAK SEOUNG AM
IPC: B22D11/16
Filed: 2003-08-06
Abstract: PURPOSE: To provide an apparatus which improves quality of slab by measuring a mold width of an uppermost portion of mold more accurately using a laser sensor and computing taper of narrow face of the mold more accurately using a laser sensor, thereby preventing generation of break-out. CONSTITUTION: An apparatus for controlling taper and width of mold using laser sensors comprises a first laser sensor(30a) for measuring a mold width that is a gap between narrow faces(12a,12b) on an uppermost part of the mold; a second laser sensor(30b) for measuring a first distance from the mold to the narrow face by irradiating a laser that is parallel to a width direction of the mold from a certain position in the mold; a third laser sensor(30c) which is installed under the second laser sensor such that the third laser sensor is parallel to the second laser sensor with being spaced from a position where the second laser sensor is installed in a certain distance(B), and which measures a second distance to the narrow face by irradiating a laser onto the mold such that the laser is parallel to a width direction of the mold; and a control part(31) computing taper(θ) of the mold represented as in the following mathematical expression 1 using the first distance and the second distance and controlling width and taper of the mold to correct an error of the comparison results by comparing preset mold width and preset mold taper with the measured mold width values and the computed mold taper values: £Mathematical Expression 1| θ=tan¬-1£(A1-A2)/B| where θ is taper, A1 is first distance, A2 is second distance, and B is a distance between the second laser sensor and the third laser sensor.
Patent KR-20050019478-A (KR)
Inventor: CHOI JONG HYUK
IPC: H01M6/16
Filed: 2003-08-19
Abstract: PURPOSE: An electrolyte composition and a lithium battery using the same are provided to solve problems caused in case of battery overcharge, such as thermal runaway, by improving the stability at the overcharged state, and to improve cycle properties. CONSTITUTION: The electrolyte composition comprises: a lithium salt; an organic solvent which has 15-50wt% of propylene carbonate(PC) based on the total content of the electrolyte composition; a nitrogen-containing compound; and cyclohexylbenzene, wherein the content of the nitrogen containing compound and cyclohexylbenzene are 0.1-5wt% and 0.5-10wt%, respectively, based on the total weight of the composition.
Patent KR-20050022054-A (KR)
Inventor: SONG SOO YONG
IPC: H04B1/38
Filed: 2003-08-26
Abstract: PURPOSE: A detachable LCD module protecting device is provided to prevent an LCD module from being broken down or damaged caused by an impact force applied from outside by reliably protecting it with an LCD module cover. CONSTITUTION: A front case(1) has a mounting space(1a) at its central portion, on which an LCD module is mounted. A guide rib(2) is protrusively installed in a rectangular shape at a circumferential part of the mounting space(1a) of the front case(1) and has C-shaped hook holes(2a) formed at both sides of a lower end thereof. An LCD module cover(3) is detachably installed at the guide rib(2) and includes a protrusive surface with a central portion protruded with a step in order to cover and protect the LCD module and a protection window(3b) formed at the protrusive surface corresponding to the mounting space(1a) of the front case(1). Support legs(4) are provided at both sides of a lower portion of the LCD module cover(3) and has a rotational shaft(5) rotatably inserted into the hook holes(2a) of the guide rib(2). A stopping protrusion is installed at an upper end of the guide rib(2). A hook piece(7) is provided at an upper end of the LCD module cover(3) and inserted into the stopping protrusion.
Patent KR-20050022586-A (KR)
Inventor: KIM WOOK
IPC: A61P17/00
Filed: 2003-08-27
Abstract: PURPOSE: A composition for treating atopic dermatitis is provided, which composition does not result in side effects during the long term dosage, and does not making problems when it is co-used with other atopic dermatitis treating drugs. CONSTITUTION: The composition for treating atopic dermatitis comprises an extract of Plantage lanceolata as an effective ingredient, wherein the composition is prepared by adding 10 to 20 liter of water into 400g of Plantage lanceolata, heating the Plantage lanceolata in water, and removing 30 to 60 wt.% of water from Plantage lanceolata; the composition has a formulation of liquid or pack; the liquid type of composition is prepared by filtering the composition comprising the Plantage lanceolata extract to remove fibrous matters; and the pack type of composition is prepared by wrapping the composition comprising the Plantage lanceolata extract with clothes.
Patent KR-20050024554-A (KR)
Inventor: CHO HU KAB
IPC: B07B1/28
Filed: 2003-09-03
Abstract: PURPOSE: A sieve shaker and a method for controlling the same are provided to simplify the equipment, to reduce the noise when operated and to separate the particles by an eccentricity plate. CONSTITUTION: The siever shaker for regulating the grain size in the pulverization process of semiconductor, ceramic or metal material includes: a housing; a main plate, arranged on the lower end of the housing; a screw(40), whose head is configured as a handle(30) in the front of the housing and which has a guide(50) on its both sides and is penetrated and fixed through and to an upper end cover(45) and lower end cover(55); a control plate, mounted in the center between the screw(40) and the guide(50) and connected to a center plate(150) which is mounted on the rear end of the housing and is connected to a wing plate(140); and a wing plate(140), penetrated and fixed through and to a cam inside a cam box(70).
Patent KR-20050025811-A (KR)
Title: Plasma display panel
Inventor: LEE HYO SUK
IPC: H01J11/48
Filed: 2003-09-08
Abstract: A plasma display panel is provided to achieve improved durability and use efficiency of the non-display region of the plasma display panel, by varying the deposition width of a sealing frit in the outside of the display region of a lower panel. A plasma display panel comprises a lower panel(210) having a display region formed therein; a sealing frit(320) deposited in the outside of the display region such that the deposition width varies in accordance with the deposition position; and an upper panel sealed to the lower panel by the sealing frit.
Patent KR-20030078843-A (KR)
Inventor: AHN JUNG MIN
IPC: A61F5/453
Filed: 2003-09-17
Abstract: PURPOSE: A residual urine removal cap and an underwear equipped with the same are provided to efficiently prevent the underwear from being stained due to the residual urine by fitting the cap in desired site of the user body. CONSTITUTION: The cap(100) comprises a body(110) formed with an opening(110) on one side thereof and a residual urine absorption component(120) disposed in the body(110). The body(110) is made of flexible material to closely adhere it to end of specific site of body such as penis and to ensure wearable convenience and has a plurality of apertures(112). The body contains far-infrared ray generating materials such as charcoal and/or quartz porphyry or loess. The body is able to be in conical form by overlapping and adhering two portions by adhesive.
Patent KR-20040025620-A (KR)
Inventor: JO IN HO
IPC: G06K19/077
Filed: 2003-09-18
Abstract: PURPOSE: A multiple RF(Radio Frequency) card is provided to independently use each RF ID to each application by giving a plurality of RF IDs differed from purposes to each card, and prevent card data from colliding with each other by making an RF card terminal read only the data matched with a modulating/demodulating method. CONSTITUTION: The voltage induced by a common antenna coil(12) is connected to respective IC chips(10-1¯10-n) through a dynamic voltage accumulator(13). The antenna coil is parallel connected to each IC chip respectively comprising a modulator/demodulator(14), a controller(15), and a memory(16). Thus, the card information of each IC chip modulated by each modulator/demodulator is transmitted to the RF card terminal through the common antenna coil. The demodulated information received from the RF card terminal through the common antenna coil is modulated by the corresponding modulator/demodulator for the modulator/demodulators.
Patent KR-20040034395-A (KR)
Inventor: TANAKA YONETA
IPC: H01L21/027
Filed: 2003-09-25
Abstract: PURPOSE: A planar stage apparatus is provided to maintain the flatness of the plane of the platen by supporting a platen through plural supporting points. CONSTITUTION: A planar stage apparatus includes a platen, a stationary type supporter, and a displacement type supporter. The platen(11) has a plane(11A). The platen is supported by the stationary type supporter(20) and the displacement type supporter(30). The stationary type supporter is formed with three supporting members. The displacement type supporter is used for forming a supporting point at a position other than positions of supporting points formed by the stationary type supporter. The displacement type supporter expands into the direction perpendicular to the plain surface of the platen in order to be displaced. In addition, the displacement type supporter is used for maintaining the selected displacement of the displacement type supporter.
Patent KR-20050030837-A (KR)
Title: Method for sms with secret number
Inventor: JUNG YONG SIK
IPC: H04W12/08
Filed: 2003-09-26
Abstract: A service method of a short message including password is provided to transmit a message with password of a transmitter and a password text recognized only by a receiver, thereby enabling the receiver to confirm the message by finding out the password as well as preventing disclosure of private information. A password field(410) stores password designated by a transmitter. A password text field(420) stores a text which a receiver can guess the password with. A secrete message field(430) stores a short message transmitted to the receiver from the transmitter.
Patent KR-20050031262-A (KR)
Title: Lead switch's contact stability-enhanced level sensor
Inventor: YUW CHANG GUK
IPC: G01F23/62
Filed: 2003-09-29
Abstract: A lead switch's contact stability-enhanced level sensor is provided to enable the maintenance of lead switch contact points by preventing the movement of float. A lead switch's contact stability-enhanced level sensor includes a float cover(30) and a level sensor. The float cover(30) is capable of stably detecting a water level by preventing the movement of the float(10). A body(20) is installed at the bottom surface of a washer liquid storage tank(1). The lower part of the body(20) includes a lower body(22) and a guide(24) extending from the lower part(22). The lower part(22) prevents the float(10) from lowering under a predetermined level by attaching a lower surface to an upper surface. The lower body(22) includes a lead switch(26). Two contact points are connected to each other in response to a magnet(15) attached to the inner peripheral surface of the float(10).
Patent KR-20050031308-A (KR)
Title: Stamp refractory for using induction furnace
Inventor: CHON UONG
IPC: C04B35/443
Filed: 2003-09-29
Abstract: Provided is a MgO-Al2O3 refractory with excellent thermal shock resistance and high temperature chemical resistance, and no hydration for use as stamp material for induction furnace. The stamp material for induction furnace comprises more than 50wt.% of spinel(MgO-Al2O3) powder with a 0.075-0.3mm diameter, and the remains of Al2O3 of MgO, wherein the spinel material with the effective sizes improves compaction density for good application. Also, the resultant MgO-Al2O3 material has also good slag penetration resistance and spalling resistance.
Patent KR-20050031546-A (KR)
Title: Variable shelf of communication rack
Inventor: CHOI BYUNG HYUK
IPC: H05K7/14
Filed: 2003-09-30
Abstract: A variable shelf for a communication rack is provided to easily mount and dismount a backboard by easily separating a front body part and a rear body part when a shelf is mounted and dismounted in the backboard. An upper/lower end member capable of installing a front PCB(100) is composed in an upper/lower end of a front body part(200). Front panels(210,220) fixed and installed at both sides of the upper/lower end member are formed in the front body part(200). A plurality of assemblage screws(230) having a uniform length and height are formed at one side of the front panels(210,220) to be combined with a rear body part(300). Rear panels(310) are formed at both sides of a rear body part(300). The rear panels(310) have panel fixed plates(330). A uniform part of the panel fixed plates(330) is protruded and formed to closely adhere to the front panels(210,220) of the front body part(200) and be fixed and installed in the front panels(210,220). A shelf support(350) for supporting the rear panels(310) is formed at an upper side of the rear body part(300). A PCB guide(360) for safely receiving a plurality of rear PCBs(400) is formed in a lower end of the rear body part(300).
Patent KR-20050039059-A (KR)
Inventor: KIM DAE WOO
IPC: H01L21/22
Filed: 2003-10-23
Abstract: 반도체 제조용 반응로는 외관을 형성하는 본체와 본체의 내측에 설치되어 반응공간을 형성하는 이너튜브 및 아웃튜브와 아웃튜브의 외벽에 외감되어 반응공간 내에 열을 가하는 히팅코일과 히팅코일 외측에 설치되며 그 내부에 냉수를 공급하여 반응공간을 쿨링시키는 수냉각기와 수냉각기의 외측에 설치되며 냉각에어를 분사시키는 공냉각기를 포함한다.
Patent KR-20050039162-A (KR)
Inventor: PARK MIN SOO
IPC: G06Q50/20
Filed: 2003-10-24
Abstract: 본 발명의 단말기를 이용한 통신 학습 관리 방법은, 선생님과 학습자의 대화를 자동으로 녹음하여 저장하고, 저장된 데이터를 학부모의 휴대용 단말기에 주기적으로 제공함으로써, 학원 등 교수 단체는 제공된 학습에 대한 신뢰도를 높이고, 학부모는 주기적으로 학습 내용을 통보받음으로써 자녀의 학습 정도 및 학습 수준을 쉽게 파악할 수 있는 단말기를 이용한 통신 학습 관리 방법을 제공하는데 그 목적이 있다. 
     상기 목적을 달성하기 위하여 본 발명은, 교수측 통신 수단, 학생측 통신 수단, 서버 및 학부모 단말기를 포함하는 시스템에 적용되는 단말기를 이용한 통신 학습 관리 방법에 있어서, 상기 교수측 통신 수단 또는 상기 학생측 통신 수단에서 학습용 연결을 시도하는 학습용연결설정단계; 상기 교수측 통신 수단 또는 상기 학생측 통신 수단에서 상기 학습용 연결이 성공하였는지 여부를 판정하는 학습용연결판정단계; 상기 학습용 연결이 성공한 경우에는, 상기 학습용 연결이 단절될 때까지 상기 교수측 통신 수단 및 상기 학생측 통신 수단이 서로 대응하여 학습 데이터 교환을 수행하고, 상기 학습 데이터 교환을 통하여 학습 상태 데이터를 생성하는 학습상태데이터생성단계; 상기 교수측 통신 수단 또는 상기 학생측 통신 수단에서 상기 서버로 상기 학습 상태 데이터가 입력되어 저장되는 학습상태데이터저장단계; 및 상기 학부모 단말기를 통하여 상기 서버에 저장된 상기 학습 상태 데이터를 제공받는 학습상태데이터제공단계를 포함한다.
Patent KR-20040038730-A (KR)
Inventor: GUERET JEAN LOUIS
IPC: A61K8/99
Filed: 2003-10-28
Abstract: PURPOSE: Provided is a packaging and dispensing device having a body containing particles having preservative effect, which reduces the content of a preservative in a cosmetic product and homogenizes the product when a container containing the product is shaken. CONSTITUTION: The packaging and/or dispensing device for a cosmetic product(P) comprises a container for housing the product(10) and at least one body(10) to be contacted at least partially with the product upon using the device. The body(10) comprises particles(11) in a binder, wherein at least a part of the particles(11) is at least partially in direct contact with the product(P). The body(10) has at least one cavity(12) visible by the naked eye.
Patent KR-20050040977-A (KR)
Inventor: CHOI JIN TAE
IPC: H04B7/26
Filed: 2003-10-29
Abstract: 신호세기가 비슷한 둘 이상의 기지국 경계에 있는 이동통신 단말의 호 연결 실패 및 호 단절을 방지하기 위한 호 연결 설정 방법을 제시한다. 
     본 발명은 신호세기가 비슷한 둘 이상의 기지국 경계에 이동통신 단말이 위치하는 경우, 신호세기가 비슷한 모든 기지국의 전파 환경을 측정하여 호 설정 요청시 기지국의 신호세기를 이동통신망으로 전송하며, 이동통신망은 기지국의 신호세기가 제 1 설정값 이상인 경우 채널 할당을 요청한다.  이에 따라, 신호세기가 제 1 설정값 이상이 되는 기지국과 이동통신 단말 사이에 트래픽 채널이 할당되고 역방향 채널이 턴온되게 되며, 이동통신 단말은 DRC값을 결정하는 한편, 순방향/역방향 신호세기 및 데이터 송수신 이력을 참조하여 어느 하나의 기지국을 선택하고 이를 이동통신망으로 전송한다.  이동통신 단말에 의해 선택된 기지국은 이동통신 단말로부터 전송된 DRC값이 제 2 설정값 이상인지 확인하여 제 2 설정값 이상인 경우 연결 설정을 완료하고 이후의 과정을 수행하게 된다. 
     이에 따라, 기지국 경계에 위치하는 이동통신 단말에 대한 서비스 품질을 향상시킬 수 있다.
Patent KR-20050041337-A (KR)
Inventor: BAEG JIN OOK
IPC: H01M8/02
Filed: 2003-10-30
Abstract: 본 발명은 직접메탄올 연료전지(DMFC)용 술폰산 함유 폴리아릴에테르벤즈이미다졸 전해질 및 이를 이용한 전해질 복합막에 관한 것으로서, 더욱 상세하게는 내열성, 기계적 물성 및 용해성 등의 우수한 성질을 가지고 있는 술폰산 함유 폴리아릴에테르벤즈이미다졸을 반복단위로 하는 신규의 고분자 전해질과, 상기한 고분자 전해질을 지지체에 코팅하여 제조된 것으로 이온전도도 및 메탄올 투과도가 현저히 감소되어 직접메탄올 연료전지(DMFC)의 전해질막으로 유용한 전해질 복합막에 관한 것이다.
Patent KR-20030088104-A (KR)
Title: Method for managing member and customer information of internet shopping mall, login method, and shopping mall operating method thereof
Inventor: KWON YOUNG JIG
Filed: 2003-10-30
Abstract: PURPOSE: A method for managing the member and customer information of an Internet shopping mall, a login method, and a shopping mall operating method thereof are provided to enable a lower ranked mall to secure members and increase sales by the statistics analyzing the buying activity of the member on the shopping mall, and to enable the member to shorten a shopping time and receive the benefit as the customer. CONSTITUTION: The he frequently buying goods and the frequently transacting lower mall are managed through the statistics analyzing the buying activity of the member on the shopping mall. When the member logs in to the shopping mall, the member directly logs in to the lower mall by using the item data of the lower mall frequently used or affiliated by the member. After logging in to the shopping mall, the member buys a product of the lower mall by using the item data of the lower mall, and the frequently buying goods are preferentially displayed by the data analyzing the buying activity.
Patent KR-20050045091-A (KR)
Inventor: PARK SHIN HEE
IPC: B21D39/04
Filed: 2003-11-10
Abstract: 본 발명은 전자기 성형을 이용한 결합장치에 관한 것으로서, 결합 대상물에 자장을 집중시키는 필드 쉐이퍼와, 상기 필드 쉐이퍼에 반력이 발생하도록 유도하는 코일과, 코일에 전기를 공급하는 충전회로를 구비하는 전자기 성형을 이용한 성형장치에 있어서, 필드 쉐이퍼와 상기 대상물 간에는 유도자장을 발생시키며 스틸보다 전도성이 큰 재질의 보조링이 삽입된다.
Patent KR-20030090579-A (KR)
Inventor: OH JI SEOK
IPC: B32B5/18
Filed: 2003-11-06
Abstract: PURPOSE: An insulating panel is provided to greatly increase strength for protecting distortion and/or bending of the panel and to minimize variation of the panel during mechanical processing by comprising cross-linked top and bottom core materials. CONSTITUTION: The insulating panel is prepared by bending a steel sheet or a hard panel material to continuously form a number of straight uneven portions(11,12) and comprises a pair of top and bottom core materials(10,10') welding-coupled in the cross-linked status; an insulating material(20) consisting of urethane foam and charged into a dimple portion in the linked core materials(10,10') to be integrated together; and a cover sheet(30) consisting of metallic plate or artificial leather and adhered to top and bottom sides of the core materials(10,10') to protect the insulating material(20) and finish surface of the panel.
Patent KR-20040042872-A (KR)
Inventor: DOI SATOSHI
IPC: H01L21/3205
Filed: 2003-11-13
Abstract: PURPOSE: A method for manufacturing an interconnection including a multiple metal layer stack is provided to improve the anti-erosion and refractoriness characteristics of the interconnection integrated in a thin film transistor. CONSTITUTION: A metal film stack is formed to cover a substrate. The metal film stack includes a lower refractory metal film(91) over the substrate, a lower protective layer(93a), a central metal film(92), an upper protective layer(93b), and an upper refractory metal film(94). The lower protective layer is made of a first compound including a metal disposed on an upper surface of the lower refractory metal film. The central metal film is disposed on an upper surface of the lower protective layer. The upper protective layer is made of a second compound including the metal disposed on an upper surface of the central metal film. The upper refractory metal film is disposed on an upper surface of the upper protective layer. The metal film stack is patterned. A sidewall protective layer of a third compound is formed on a terminal of the central metal film.
Patent KR-20050046344-A (KR)
Inventor: CHOI WHA YOUL
IPC: C12N1/14
Filed: 2003-11-14
Abstract: 본 발명은 페니실리움 코뮨 KNU5379 균주를 이용한 지베렐린의 대량생산방법 및 용도에 관한 것으로, 본 발명은 갈색 참깨 뿌리에서 분리 동정된 지베렐린 생산능이 있는 페니실리움 코뮨 KNU5379 균주를 제공하는 뛰어난 효과가 있다. 또한, 본 발명은 상기 균주를 대량으로 배양하여 생물학적으로 활성이 있는 GA1, GA3, GA4 또는 GA9를 대량생산하는 방법을 제공하는 뛰어난 효과가 있다. 또한, 본 발명 균주는 종래의 지베렐린 생산균주보다 월등히 높은 GA1, GA3, GA4, GA9을 생산할 수 있다.
Patent KR-20050048273-A (KR)
Inventor: JANG SANG HYUN
IPC: B23K37/04
Filed: 2003-11-19
Abstract: 다수개의 로케이터와 규제핀을 통하여 용접 대상물을 로딩한 베이스 지그 상에 상기 용접 대상물을 고정하기 위한 행거 지그를 상기 베이스 지그의 다수의 개소에서 견고하게 체결하기 위하여; 
     상기 베이스 지그의 각 모서리 부분에 장착되며, 내부에는 곡선형상의 가이드 홈을 형성하는 록킹 하우징 유닛; 상기 록킹 하우징 유닛에 대응하여 상기 행거 지그의 각 모서리 부분에 하향하여 장착되며, 상기 가이드 홈을 따라 록킹 핀이 체결되도록 하여 상기 베이스 지그 상에 행거 지그를 고정하는 록킹 핀 유닛으로 구성되는 용접 지그용 체결장치를 제공한다.
Patent KR-20040047635-A (KR)
Inventor: BIANCHI DANIELE
IPC: C07B61/00
Filed: 2003-11-25
Abstract: PURPOSE: Provided is an integrated method of preparing phenol from benzene, which comprises recycling of byproducts such as biphenol compounds to increase the final selectivity to phenol, to save the cost, and to improve the productivity. CONSTITUTION: The method comprises the steps of: (1) forming phenol continuously by direct oxidation of benzene with hydrogen peroxide, the oxidation being performed in a three-phase reaction system comprising a first liquid phase including benzene and an organic solvent, a second liquid phase including water and a solid phase including active catalyst based on titanium silicate TS-1, under the ratio of H2O2/benzene of 10-70; (2) separating phenol and unreacted benzene from the reaction mixture of the oxidation zone by distillation; (3) separating the solvent and byproducts from the mixture discharged from step (2) by extraction; (4) converting the byproducts of step(3) into phenol by hydrodeoxygenation carried out continuously in aqueous solution, at 250-500 deg.C, under 1-100 bar, and in the presence of a catalyst based on an element of Group VIB or a mixture thereof, or Group VIII or a mixture thereof; and (5) recycling the phenol obtained from step (4) to the distillation step (2).