baber/WOPTO huggingface dataset:
Patent KR-100253667-B1 (KR)
Inventor: UEDA SHINSAKU
IPC: H03K4/12
Filed: 1992-10-08
Granted: 2000-04-15
Abstract: 본 발명은 선형화 및 지연보상된 전 씨모오스 전압제어발진기를 제공한다. 트랜스콘덕턴스는 제어전압입력을 수신하여 두 비교기의 정입력에 두 램핑 전압출력을 공급하기 위한 전류제어램핑회로에 제어전류를 제공한다. 상기 비교기들은 상기 램핑전압과 드래쉬홀드 전압을 비교하여 상기 램핑전압이 상기 드래쉬홀드 전압과 교차할때 래치에 펄스를 인가한다. 상기 래치는 상기 회로의 발진출력을 제공하며, 상기 발진출력은 상기 전류제어램핑회로를 절환시킬 목적을 귀환된다. 보상루프는 상기 래치의 발진출력과 상기 제어전류를 입력으로서 수신하여 상기 드래쉬홀드 전압을 상기 비교기들에 제공한다. 상기 보상루프는 유사한 전류제어램핑회로를 포함하고 있는데, 상기 램핑회로는 상기 첫번째의 전류제어램핑회로와 거의 동일한 램핑출력들을 제공한다. 상기 발진출력들에 의해 트리거되어지는 트랙 및 홀드회로는 상기 램핑출력들의 피크전압들을 저역통과필터를 통하여 차동증폭기의 부입력에 공급한다. 외부의 기준전압은 상기 차동증폭기의 정입력으로 인가되며, 상기 차동증폭기의 출력은 상기 비교기들에게로 상기 드래쉬홀드 전압으로서 제공된다. 상기 비교기 및 상기 래치의 지연영향은 상기 보상루프에 의해 상쇄된다.
Patent KR-950003053-B1 (KR)
Title: Super mirror sus mold steel
Inventor: KIM HYON-MUN
IPC: C22C38/46
Filed: 1992-10-27
Granted: 1995-03-30
Abstract: The stainless steel mold element was improved in flat mirror face property, anticorrosion property, and cleanness by developing the processing method and by changing the composition useful for the injection of high quality engineering plastic and glass goods such as TV tube. The stainless steel mold element comprised the Fe, C 0.26-0.40, Si 0.02-0.05, Mn 0.02-1.00, Ni below 0.30, V 0.05-0.30, P below 0.040, S below 0.020, Al 0.005-0.060, N 0.010-0.080, Ca 0.0010-0.010, Mo 0.0001-0.10, and Cr 12.00-14.00 wt.%, the element was electro-slag-refined with using the slag of CaF, CaO, alumina, silicone dioxide, and MgO and forged at 1150-1250≰C.
Patent KR-950013619-B1 (KR)
Title: The battery saving method in mobile phone
Inventor: LEE YONG-SOP
IPC: H04B1/16
Filed: 1992-11-13
Granted: 1995-11-13
Abstract: The method consists of the first timing setting step which is to stop temporarily a cellular phone by spontaneous motion in case that the detection process of received data is failed, the first restoring step which restores the performance of the first timing setting signal generating unit, a word sink detecting step which detects word sink data input, the second timing setting step which sets the second timing value to save batteries by stopping the operation of cellular phone temporarily, and the second restoring step which restores to detect the word sink when the fixed second timing is reached.
Patent KR-0121161-B1 (KR)
Title: Credit card query mechine
Inventor: YU TAE-SUNG
IPC: G06F19/00
Filed: 1992-11-26
Granted: 1997-11-21
Abstract: Disclosed is a credit card inquiry system for automatic money input comprising a microprocessor(11) which controls overall, a display portion(12) which informs the data output from the microprocessor(11) to an user, a magnetic head(13) which reads the data magnetically recorded in the credit card and input the data to the microprocessor(11), a RAM(14) which stores the data processed at the microprocessor(11), a ROM(15) which outputs the stored operation program to the microprocessor(11), a RTC portion(16) which outputs a data signal informing current time to the microprocessor(11), a keyboard(18) which consists of a calculator including a storing key(20) and input ending key(17) and inputs the number of installment months and an amount of money, a calculation unit(22) which calculates by using an exclusive calculation program when data is input from the keyboard(8), and a modem(19) which connects a host computer to the microprocessor(11). Thus, the credit card inquiry system firstly calculates the number of an installment month and the total money that the user used by using the calculation unit and stores it to the RAM and inputs.
Patent KR-950005929-B1 (KR)
Title: Testing device for cooling cycle
Inventor: BYON IL-SU
IPC: F25B49/00
Filed: 1992-11-30
Granted: 1995-06-07
Abstract: The method checks a refrigerant state and in its leakage, prevents a destruction owing to heat by a racing of a compressor. The method includes a remote control receiving routine, an air-condtioner driving routine, a temperature sensing routine, a refrigerant leakage detecting routine and a timer routine for reducing one timer value when the timer value is not a given value.
Patent KR-950013306-B1 (KR)
Title: The method of protecting false dialing in cellular phone
Inventor: LEE JAE-HYOK
IPC: H04B7/26
Filed: 1992-12-19
Granted: 1995-11-02
Abstract: if a telephone number is entered by a dial key in a state that power is on, storing the telephone number in a dial buffer and operating a timer; and if the dial key or a send key is not entered until the time of the timer reaches a predetermined time, clearing the telephone number stored in the dial buffer and returning to the state that the power is on.
Patent KR-960008788-B1 (KR)
Title: Row redundancy circuit
Inventor: KO HWA-SOO
IPC: G11C11/413
Filed: 1992-12-30
Granted: 1996-07-03
Abstract: at least two redundancy cell array drivers(54,56) each of which is connected to a redundancy memory cell array to drive it; a defective cell array detecting fuse box(16) for detecting an address corresponsing to a defective memory cell array; a block selection fuse box(18) for selecting a memory block including the defective memory cell; and a driving controller(50) for selectively driving one of the redundancy cell array drivers by the outputs of the defective cell array detecting fuse box and block selective fuse box.
Patent KR-100195589-B1 (KR)
Inventor: WILLIS DONALD HENRY
IPC: H04N7/00
Filed: 1991-05-29
Granted: 1999-06-15
Abstract: 비디오 디스플레이 시스템은 제1화상의 제1비디오 신호 소스(304)와 제2화상의 제2비디오 신호 소스를 포함한다. 제1신호 프로세서(304)는 제1비디오 신호의 속도를 증가시킨다. 제2비디오 신호(306)는 제1비디오 신호와 수직으로 동기화된다. 제2비디오 신호는 필드 메모리의 필드 주기중 일부까지 지연된다. 제2신호 프로세서(306)는 동기화된 제2비디오 신호의 속도를 증가시킨다. 제1 및 제2비디오 신호는 화상의 나란한 디스플레이를 위해 조합된다. 만일 제1 및 제2디스플레이 포맷비가 각각 대략 4:3이고 제3디스플레이 포맷비가 대략 16:9일 경우, 각각의 나란한 화상은 대략 8:9의 디스플레이 포맷비로 디스플레이될 수 있다. 만일 각 비디오 신호가 대략 4:3까지 속도가 증가되고 대략 1/3까지 수평으로 크로핑될 경우, 각각의 나란한 화상은 대체로 종횡비 디스토션 없이 디스플레이된다.
Patent KR-950005048-B1 (KR)
Title: Clock recovering circuit
Inventor: OH JIN-TAE
IPC: H03K5/00
Filed: 1993-03-18
Granted: 1995-05-17
Abstract: The circuit implements a SRTS algorithm, a clock recovering algorithm, with a hardware. It can recover a source clock of all CBR service(64Mbps=155.520Mbps) in ATM transmission mode. It comprises: (i) a first FIFO(34); (ii) a RTS generating part(33) for generating RTS from a transmission source data; (iii) an SAR-PDU generating circuit (37) for generating SAR-PDU from a 47 octet siganl and a RTS data; (vi) a first ATM cell processing part(39) generating a ATM cell after converting SAR-PDU; (v) a second ATM cell processing part(40); (vi) a SAR-PDU separation part(38) that separates the SAR-PDU and the RTS; (vii) a clock recovering part(35); and (viii) a second FIFO(36).
Patent KR-960006747-B1 (KR)
Title: Stacted capacitor fabrication process
Inventor: KEUM DONG-RYUL
IPC: H01L27/108
Filed: 1993-04-26
Granted: 1996-05-23
Abstract: forming word-line and bit-line on a silicone substrate and then forming an insulating layer on those lines; forming contact holes revealing the silicone substrate and sputtering a first conductive layer for a storage electrode, and then forming a number of insulating layer patterns; forming an insulating layer pattern for buffer being located up to the specified upper side of the neighboring insulating pattern; forming a pattern by dry etching the second conductive layer revealed and then sputtering the third conductive layer in upper side of the entire structure; forming a third conductive layer spacer in the side wall of the insulating layer pattern for buffer and the side wall of second conductive pattern by blanket etching, and at the same time, forming a first conductive layer pattern by etching the revealed first conductive layer to form a storage electrode connected electrically with the first, the second and the third conductive layer spacers; revealing the surface of the storage electrode by wet etching the insulating layer pattern for buffer, the insulating layer pattern and the insulating layer in upper and lower part of the storage electrode; and forming a stacked capacitor.
Patent KR-0121426-B1 (KR)
Inventor: KOYANAGI ICHIROH
IPC: G11B33/12
Filed: 1993-05-10
Granted: 1997-11-20
Abstract: 본 발명의 목적은 소형이며, 제조공정이 간단한 운반가능한 내충격성 디스크 기억장치를 제공하는 것이다. 
     보호 외부케이스내에서, 보호 외부케이스의 커넥터의 보호 외부케이스내의 디스크 기억장치를 연결하는 플랙시블 케이블을 이용하여 디스크 기억장치의 일단을 지지하고, 디스크 기억장치의 타단은 플랙시블 케이블과 대항한 탄성력을 지닌 충격 흡수재로 지지하는 것이다. 보호 외부케이스내에서는 디스크 기억장치의 회전 디스크와 헤드 액츄에이터를 수납한 헤드 디스크와 전자회로를 탑재한 회로 회로기판을 거의 같은 평면내에서 병렬로 배치하고, 또 헤드 디스크를 충격흡수재로 지지한다.
Patent KR-960015570-B1 (KR)
Inventor: KLEBE DOUGLAS O
IPC: H01Q1/00
Filed: 1993-05-13
Granted: 1996-11-18
Abstract: 내용 없음
Patent KR-970004541-B1 (KR)
Inventor: KATSUMATA AKIO
IPC: G06K19/077
Filed: 1993-06-18
Granted: 1997-03-28
Abstract: 요약없음
Patent KR-960003971-B1 (KR)
Title: Key input system
Inventor: BAEK SANG-JOO
IPC: H04M1/23
Filed: 1993-08-10
Granted: 1996-03-25
Abstract: The numeric numbers and the characters are displayed on a display and are selected by a key input unit so that a key input unit become simplified. The key input unit includes a X and Y axis displacement detector(20,30) for generating displacement signals of X and Y axis by detecting the variation of magnetic field strength, a controller(50) for generating display data according to output signal of the X and Y axis displacement detector and for processing key selection signal sent from a remote controller, a memory(60) for storing an operating program, a display(70) for displaying numeric numbers and characters according to control signal transmitted from the controller(50), and a wireless transmission port(80) for sending data.
Patent KR-0128529-B1 (KR)
Title: Safety switch of a fully automatic washing machine
Inventor: LIM SEUNG-HO
IPC: D06F37/42
Filed: 1993-08-11
Granted: 1998-04-07
Abstract: A safety switch is attached integrally to the body and detects whether the lid is open, senses the balance of the laundry, and stops the operation of the washer when the washing bin fluctuates abnormally during spin drying. The safety switch (11) comprises a 1st permanent magnet(16); a 1st lead switch(17); a link (18); a guide plate (22); a 2nd permanent magnet(20); a spring(21); a 2nd lead switch (19); a fixing element (23); and an actuating lever (14). When the washing bin fluctuates due to imbalance of the laundry the actuating lever (14) moves the link (18) and thereby the 2nd permanent magnet(20), which turns off the 2nd lead switch (19) to cut off the power supply to the electric motor of the washing machine. And when the washing bin is stable, the actuating lever (14) keeps the  2nd permanent magnet(20) to keep the 2nd lead switch (19) on.
Patent KR-970004491-B1 (KR)
Title: A method for manufacture of sensing infrared rays
Inventor: NAM HYO-JIN
IPC: H01L31/101
Filed: 1993-10-18
Granted: 1997-03-28
Abstract: The method is for fabricating an infrared sensor by using the superconductivity of a ferroelectric thin film. The method comprises the steps of: epitaxial-growth of a PLT(22) on a MgO substrate(21); forming a lower electrode(23) on the PLT film(22); coating a polyimide(24) on the lower electrode(23); bonding a Si substrate(26) where a membrane region is etched, to the MgO substrate(21); etching the MgO substrate(21) completely; and forming an upper electrode and a lower electrode pad(28) on the surface where the MgO substrate is etched.
Patent KR-960013174-B1 (KR)
Title: Assembling method for a transferring gear
Inventor: JANG SUNG-SIK
IPC: B23P15/00
Filed: 1993-11-30
Granted: 1996-09-30
Abstract: The method is designed to simplify process of mounting and assembling of a gear used in a manual transmission for improving productivity and minimizing partial damage. The method includes the steps of : applying special glue (20) evenly on outer or inner circumference of a gear; maintain temperature of another gear at higher degree; and mounting both of two gears (6, 7) with compulsory assemblage pressure and adhesiveness of the above special glue.
Patent KR-970003792-B1 (KR)
Title: Standard encoding/decoding device for video overlay
Inventor: LEE CHON-WOO
IPC: H04N5/445
Filed: 1993-12-17
Granted: 1997-03-21
Abstract: When an analog complex video signal is inputted into a video input group(11), the inputted video signal is digitalized by an ADC(13). This signal, after being converted into Y:U:V=4:2:2 formatted video tape and synchronized signal, is converted into RGB data format by a digital video processor(21). Then after the processing is performed to adjust the size and the location of the video screen, this signal is synchronized with the synchronized signal and stored in a frame buffer(22). Video data stored in the frame buffer(22) is overlayed with the graphic data by a media DAC(23) and displayed on the monitor. Meanwhile, when compressing the video image, Y:U:V=4:2:2 formatted data which is output from a video signal converter(10) is inputted into a video image compressor(30) to be stored in PC.
Patent KR-0121302-B1 (KR)
Title: State control method of interrupt controller on hipi + bus
Inventor: PARK YUN-OK
IPC: G06F13/24
Filed: 1993-12-24
Granted: 1997-11-22
Abstract: Disclosed is a state control method for an interrupt controller on HiPi bus branching to an idle state(82), ARB-WAIT state(84), IC-LATCH state(85), judgement of same ID or same group(86), decoding DEC judgement(87), specified interrupt process(88,89,90) and mediation interrupt process(91,92,93,94,95,96) of a predetermined times, and comprising SAO state(97), VEC1 state, and VEC2 state which can receive a vector, DUMMY1 state ordering the error when transferring, ACK state(100) reproducing a message, and WAIT state judging the completion of interrupt transmittance at the judgement(86). Thereby, the state of an interrupt processors(4,6) can be controlled in accordance with the bus protocol.
Patent RO-119003-B1 (RO)
Inventor: P UN VLAD IONU
IPC: B23Q3/14
Filed: 2001-05-23
Abstract: Invenţia se referă la o mandrină destinată prinderii sculelor aşchietoare. Mandrina conform invenţiei este formată dintr-un corp (1) prevăzut cu o gaură (a) centrală conică, necesară ghidării sculei în corpul (1) mandrinei, corpul (1) având o coadă (b) de tip MORSE, necesară prinderii mandrinei pe maşina unealtă, în corp (1) fiind prevăzute două găuri (c) transversale, coaxiale, necesare introducerii celor două bolţuri (2) care asigură blocarea sculei în timpul funcţionării, corpul (1) fiind îmbrăcat de o bucşă (3) de blocare prevăzută cu o suprafaţă conică (d), ce are rolul de a deplasa bolţurile (2), iar la partea superioară a corpului (1) este înşurubată o piuliţă (4) ce nu permite ieşirea bucşei (3) de pe corpul (1) mandrinei, nişte plăcuţe (5) împiedicând ieşirea bolţurilor (2) din găurile de ghidare (c), nişte arcuri (6) asigurând retragerea bolţurilor (2) şi astfel permite ieşirea sculei. ŕ
Patent RO-121336-B1 (RO)
Title: Stabilizer for stairs elevators
Inventor: ANDRE TEOFIL NU U
IPC: B66B9/08
Filed: 2005-03-07
Abstract: The invention relates to a stabilizer for a stairs elevator, meant to be used for maintaining the horizontal position of the elevator chair during the transportation of persons on the internal stairs of the buildings. The stabilizer for stairs elevators ensures the maintaining in horizontal position of the elevator chair by that, for any distance between the axes of the rolling track pipes in the horizontal region, ranging between 200-500 mm and the inclined parts of the rolling tracks at an angle of 0-90A , the conversion ratio (r) between the distance in mm between the axes of the pipes and the pitch angle of the rolling track relative to the horizontal line, ranging between 1,2-5 mm/degree and the transmission ratio between the toothed sector and the crown gear ranges between 1,97-5. The offsetting (delta) of the rotor axle relative to a line drawn from the axis of the base board perpendicular to the horizontal line of the lower pipe of the rolling track, ranges between 20-100 mm in the horizontal position of the rolling track. The distance between the pipes of the rolling track in a vertical region has a minimum value limited by the sizes of the meshing pinion.
Patent RO-123476-B1 (RO)
Title: Incremental position transducer
Inventor: IGNAT MIRCEA
IPC: G01B7/14
Filed: 2006-05-24
Abstract: The invention relates to an inductive incremental position transducer intended for identifying and monitoring earth slides. According to the invention, the transducer comprises a cylindrical housing (1) having a diameter of 8...15 mm and a length of 200...300, made of an insulating material in order to protect it against the action of external factors, such as humidity or accidental mechanical pressure, inside said housing there being placed a ferromagnetic core (2) having a length of 180...280 mm and a diameter of 2...4 mm, on the lateral thirds of which there are carried out two windings (3a and 3b), namely a primary supply winding and a secondary output winding, in a ratio of 1:1, symmetrically distributed on the core (2), each of them being wound on a distance which does not exceed 1/5 of the length of the core (2), the housing (1) being closed by two cylindrical supporting and sealing caps (4) attached by adhesion within the ends of the cylindrical housing (1), some connections (5) protruding internally from the housing (1), through one of said caps, while, on the exterior of the cylindrical housing (1) there is a slide (6) of a cylindrical geometry which can slide, the translation motion thereof modifying the electric voltage at the output of the secondary winding.
Patent RO-123076-B1 (RO)
Title: Composition having double effect and method for applying the same
Inventor: BARBU CONSTANTIN HORIA
IPC: C05G3/00
Filed: 2006-06-16
Abstract: The invention relates to a composition having double effect of foliar fertilizer and means of reducing the amount of toxic heavy metals absorbed by plants from polluted soils, which comprises 300...400 g of urea, 1.5...3 g of MnCl2.H2O or MnSO4.H2O, 0...20 g of K2SO4, 5...10 g of EDTA-Na2 and 5 cm3 of non-ionic detergent calculated per 1 l of solution, so as to ensure a content of 135...176 g of N, 0.5...1 g of Mn2+ and 0...9 g of K+ to 1 l of solution, as well as to a method for applying the composition consisting in that, with a view to reducing the amount of lead and cadmium in the edible aerial parts of plants cultivated on polluted soils, based on the competition between toxic heavy metals and manganese, the edible aerial parts of plants cultivated on heavy metal-polluted soils are sprayed with a solution of the claimed composition diluted in a ratio of 1:10, in a dose of 0.1 l/m2 of surface to be protected.
Patent RO-126186-B1 (RO)
Title: Energizing and invigorating fruit juice
Inventor: ANDRONOVICI LIVIU
IPC: A61K36/752
Filed: 2009-10-26
Abstract: The invention relates to an energizing and invigorating fruit juice. According to the invention, the juice comprises 2...5 parts by weight kiwi, 2...5 parts by weight lemon, 5...12 parts by weight sour cherries, 7...10 parts by weight white grapes, 3...7 parts by weight black currant, 10...20 parts by weight tangerines, 3...7 parts by weight peaches, 3...10 parts by weight black cherries, 5...10 parts by weight strawberries, 0.2...0.4 parts by weight citric acid, 0.05...0.10 parts by weight oxidation preventive sodium benzoate, 0.03...0.07 parts by weight salicylic acid and, the remainder to 100 parts by weight, water.
Patent RO-126253-B1 (RO)
Title: Process for obtaining oxidic semiconductors with magnetic dilution
Inventor: GEORGESCU GABRIELA
IPC: H01L27/01
Filed: 2010-08-02
Abstract: The invention relates to a process for obtaining oxidic semiconductors. According to the invention, the process consists in dissolving Co and Zn nitrates, at a Zn/Co molar ratio = (1-x)/x, where x = 0.04, 0.06, 0.1, in distilled water, the resulting aqueous solution being heated to 40...60°C, polyvinyl pyrrolidone and dextran aqueous solutions being admixed so as to obtain a Zn/Co/PVP/dextran molar ratio = (1-x)/x/0.05/0.05, afterwards the resulting solution being heated to 40...80°C for 10...24 hours to permit gel formation, finally there resulting a homogeneous and stable sol of ZnCoO precursor of which there are formed thin films of oxidic semiconductor with magnetic dilution, Co-doped ZnO, by successive deposition of three precursor layers on the SiO/Si or optical glass carrier, at a rate of 3000...4000 rpm, preheat treatment of films at 90...100°C for 30...60 min and heat treatment at 600...850°C for 30...120 min in an oxygen atmosphere.
Patent RO-130478-B1 (RO)
Title: Therapeutic formula for an antiacne pharmaceutical lotion
Inventor: ZANOSCHI CHRISTACHE
IPC: A61K9/06
Filed: 2013-11-28
Abstract: The invention relates to an antiacne pharmaceutical lotion. According to the invention, the lotion is a hydroalcoholic solution containing erythromycin, spironolactone and metronidazole.
Patent SA-118390704-B1 (SA)
Title: Sealed and Thermally Insulating Tank Comprising an Angle Bracket
Inventor: JOHAN BOUGAULT
Filed: 2018-07-03
Abstract: Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, a first bearing wall (2) and a second bearing wall (3) forming an edge corner (1), the tank comprising a first tank wall comprising a thermally insulating barrier and a sealed membrane, the tank further comprising an angle bracket (9), the angle bracket (9) comprising a first flange (10) and a second flange (11) in such a way that the angle bracket (9) connects in a sealed manner the sealed membrane of the first tank wall and the sealed membrane of the second tank wall in line with the edge corner (1), in which the angle bracket (9) comprises a pair of first tabs (33) and a pair of second tabs (33), the tank comprising a pair of first anchor rods (12) coupled to a respective first tab (33) and a pair of second anchor rods (12) coupled to a respective second tab (33) in such a way as to transmit a tensile load between the angle bracket (9) and the first and second bearing walls (2,3) and retain the an
Patent SA-119400821-B1 (SA)
Title: A Process for Production of Superior Quality Coke
Inventor: ARJUN KUMAR KOTTAKUNA
Filed: 2019-06-13
Abstract: The present invention relates to a novel process with lower recycle ratio while eliminating the need for quench column for production of superior quality coke conforming to specifications of anode grade coke. The process of the present invention enables production of lower amounts of coke and fuel oil yields. Fig. 1
Patent SA-515370253-B1 (SA)
Title: Bicyclic nitrogen-containing aromatic heterocyclic amide compound
Inventor: TAKASHI SHIN
Filed: 2015-12-09
Abstract: A compound which is useful as an agent for treating breast cancer is provided. As a result of intensive studies on a compound having a Complex I inhibitory effect and an AMPK activation effect, the present inventors found that a bicyclic nitrogen-containing aromatic heterocyclic amide compounds of the present invention has an excellent Complex I inhibitory effect and the AMPK activation effect, furthermore, has a cell proliferation inhibitory effect with respect to not only human PIK3CA mutation-positive breast cancer cell lines in which MCT4 is not expressed but also human breast cancer cell lines which do not have mutation of PIK3CA in which MCT4 is not expressed, and exhibits an anti-tumor effect in a human PIK3CA mutation-positive breast cancer cell line MDA-MB-453 cell in a cancer-bearing mouse in which the MCT4 is not expressed, thereby completing the present invention. A bicyclic nitrogen-containing aromatic heterocyclic amide compound of the present invention can be used as a
Patent SA-518400619-B1 (SA)
Title: Titanium Dioxide Product
Inventor: JOHN TEMPERLEY
Filed: 2018-12-09
Abstract: The invention provides a pigmentary particulate material selected from the group consisting of titanium dioxide, doped titanium dioxide and a mixture thereof, wherein the particulate material has a mean crystal size in the range of from 0.3 to 0.5 microns and a crystal size distribution such that 40wt% or more of the particulate material has a crystal size in the range of from 0.3 to 0.5microns, and wherein the ratio of the mean particle size to the mean crystal size is 1.25 or less. The particulate material may be used in a composition comprising pigmentary material dispersed in a vehicle, to provide improved opacity for said composition. Fig 1.