baber/WOPTO huggingface dataset:
Patent ES-2638542-B1 (ES)
Title: Plataforma de trabajo elevable como apero para tractores agrícolas
Inventor: RUIZ CALVO JUSTO
IPC: B66F11/04
Filed: 2016-04-20
Granted: 2018-08-01
Abstract: Plataforma de trabajo elevable como apero acoplable a tripuntal de tractor agrícola (1) constituido por un mecanismo articulado que dispone en su elemento terminal de una plataforma elevable (2) con forma de jaula para elevar personas y realizar tareas agrícolas en altura con seguridad.#La plataforma elevable (2) del apero es autonivelante y sus actuadores son cilindros oleohidráulicos de doble efecto, cuyo aceite es suministrado desde una centralita independiente mediante bomba accionada por motor eléctrico que se alimenta de la batería del tractor.
Patent HR-P20020984-B1 (HR)
Title: Armor-plating composite
Inventor: MOHR MICHAEL
IPC: B32B7/00
Filed: 2002-12-11
Abstract: A composite material for armor plating with improved multihit behavior includes at least: a front layer, facing the impact side and mounted on a first sub-layer, the front layer including a plurality of neighboring front-layer segments with form-fit contact between adjacent segments; a rear layer facing away from the impact side; and a supporting layer disposed between the front and rear layers. The supporting layer includes a plurality of supporting-layer segments, which present a surface parallel to the front layer whose area is the same as or less than the area of the front-layer segments parallel to the front layer.
Patent HR-P20040346-B1 (HR)
Title: Record carrier and apparatus for scanning the record
Inventor: SCHEP CORNELIS M
IPC: G11B7/24082
Filed: 2004-04-15
Abstract: A record carrier has a servo track ( 4 ) indicating an information track ( 9 ) intended for recording information blocks. The servo track ( 4 ) has a periodic variation of a physical parameter at a predetermined frequency and modulated parts for encoding position information at regular intervals. The modulated parts start with a bit sync element and are of a data type having a data bit element or of a word sync type having a word sync element. The bit sync element, word sync element and the data bit element being modulated according to a same predetermined type of modulation of the periodic variation. All distances between two adjacent of the elements constituting the modulated parts are unique.
Patent JO-1207-B1 (JO)
Title: Pressure-regulated drip feed device.
Inventor: ALFRED DENHOLM TUCKER
Filed: 1983-02-02
Granted: 1985-04-20
Abstract: A pressure-regulated feed device for irrigation purposes comprising a body having an inlet on one side and an annular wall on the other, engaged by a cap having an outlet on one side an annular wall on the other, to engage the annular wall on the body and housing in a chamber formed between them a button having an annular rim engaging the periphery of the chamber and across it a resilient membrane adjacent the outlet, the outlet having at least a groove for flow control when the resilient membrane is urged against it by pressure of fluid flowing there through to control the flow proportionately to the pressure.
Patent JO-1302-B1 (JO)
Title: hydrocracking pricess
Inventor: PAUL RICHARD LAMB
Filed: 1984-10-09
Granted: 1986-11-30
Abstract: hydrocracking pricess
Patent JO-3018-B1 (JO)
Title: Substituted 4-aryl-1,4-dihydro-1,6-naphthyridine amides and their use
Inventor: ADAM NITSCHE
Filed: 2008-02-26
Granted: 2016-09-05
Abstract: The present application relates to novel substituted 4-aryl-1,4-dihydro-1,6-naphthyridine-3-carboxamides, a process for their preparation, their use for the treatment and/or prophylaxis of diseases, and their use for the manufacture of medicaments for the treatment and/or prophylaxis of diseases, especially cardiovascular disorders.
Patent KR-800001712-B1 (KR)
Title: Base meterial for artificial leather
Inventor: SINN G
IPC: D06N3/00
Filed: 1975-12-30
Granted: 1980-12-31
Abstract: Synthetic leather substrates with water vapor absorption 2-8%, tensile strength 30-250 kg/cm2, and breaking elongation 30-150 % are manufd. by impregnating nonwoven fabrics with a rubber latex contg. a silicone emulsion, vulcanization accelerator, and heat sensitizer to accelerate coagulation off latex at 125-800C.
Patent KR-810000516-B1 (KR)
Title: Process for the preparation of unsaturated acid
Inventor: SHAW W
IPC: C07C51/145
Filed: 1977-10-08
Granted: 1981-05-25
Abstract: Olefinic aldehydes were oxidized to olefinic acids such as methacrolein, acrolein to methacrylic acid acrylic acid, at 200-500≰C over mixed oxide catalysts contg. Mo, P, As and Cu.  Thus, a 1:5.7:4.6:8.6 (molar) mixt. of methacrolein, air, N, and steam was passed at a 2-sec-residence time through a tube heated at 354≰C and contg. the mixed oxide catalyst on an Alundum support to give methacrylic acid in 93.8% yield.
Patent KR-800000437-B1 (KR)
Title: Apparatus to decrease emitting nox hc and co for exhaust gas of internal combustion engine
Inventor: YAKI S
IPC: F02B19/10
Filed: 1979-06-26
Granted: 1980-05-26
Abstract: This engine comprises two throttle valves - - one for an auxiliary combustion chamber and the other for the main chamber and a torch nozzle restriction. A relatively rich combustible mixture cloud is formed in the minimum-turbulence main chamber adjacent the torch nozzle at the ignition time. The carburetor throttle valves are interconnected for dependent action to change the relative amounts of air-fuel mixture as the engine load varies from idling to full throttle.
Patent KR-830000046-B1 (KR)
Title: 방수 및 방유제의 조성물
IPC: C08F220/38
Filed: 1979-10-02
Granted: 1983-02-03
Abstract: 내용 없음.
Patent KR-830001527-B1 (KR)
Title: 위치 제어방식
IPC: G05D3/12
Filed: 1980-01-08
Granted: 1983-08-08
Abstract: 내용 없음.
Patent KR-830002839-B1 (KR)
Title: 7α-메톡시세팔로스포린 유도체의 제조방법
IPC: C07D501/36
Filed: 1980-02-20
Granted: 1983-12-27
Abstract: 내용 없음.
Patent KR-840000637-B1 (KR)
Title: An apparatus for continuous untwisting and crinmping of a cloth
Inventor: SANDO YOSHIGAZ
IPC: D06C29/00
Filed: 1980-05-15
Granted: 1984-05-02
Abstract: The treatment unit for a textile, which may need untwisting or crimping, has a gap(a) between two conveyors(2,2') for the textile(4) to pass through.  As the material passes horizontally through the unit, it is sprayed from both sides with a highly pressurized fluid.  The gap(a) is adjustable, and the highly pressurized  fluid is injected from a large number of injection pipes(3,3').  Hot water, cold water, vapour and air can be used as highly pressurized fluids.
Patent KR-860000061-B1 (KR)
Title: Process for preparing 3-(n-1,3,4-thiadiazolyl-2)-aminoalkyl-alkylacrylates
Inventor: GATZI KARL
IPC: A01N43/82
Filed: 1980-05-17
Granted: 1986-02-06
Abstract: A method for the preparation of 3-(N-1,3,4-Thiadiazolyl-2) - aminoalkyl-alkylacylates of formula I(R1 = H or Cl-4 alkyl; R2 = Cl-4 alkyl; R3 = H or -CO-R4; R4 = methoxymethyl, cyclopropyl methylphenyl, or furyl was described. Thus, 2-amino-1,3,4thiadiazol, 303g, in the presence of methyl cellosolve, 2 L, was reacted with methyl-α-formyl-propionate at 120≰C for 16 hrs to give the title compds. The title compds. are used as antibacterial agents for plant protection.
Patent KR-850000310-B1 (KR)
Title: Position indication system
Inventor: LAWSON II CHARLES A
IPC: G21C17/12
Filed: 1981-06-10
Granted: 1985-03-18
Abstract: A nuclear reactor control rod position system comprises the control rods connected to drive rods movable within a group of detector coils. Bilateral switches are connected to the respective coils of the detectors  and a control circuit sequentially provides an enabling control signal to the various groups of bilateral switches connected to the respective detectors so that ther coils of each detector in turn are connected to a single signal processing circuit which may be located inside or outside the containment strcuture of the reactor.
Patent KR-880002054-B1 (KR)
Title: Tape cassette
Inventor: OGATA HARUKI
IPC: G11B23/04
Filed: 1982-01-20
Granted: 1988-10-14
Abstract: A box is used for a cassette player and has external dimensions and shape similar to those of the standard size cassette. The adaptor has a slot to receive a miniature magnetic tape cassette, and mechanism to extract the tape from its cassette and pull it out to a position corresp. to that of a standard tape within a standard cassette.  Two rollers for extracting the tape are arranged to engage it inside the miniature cassette, and then move sideways when an operating lever is manipulated.  A cover fits over the cassette adaptor box, so that the threading mechanism may not be operated while the cassette is closed.  The adaptor enables a miniature cassette to be played, or receive recording on a standard size cassette player.
Patent KR-850000114-B1 (KR)
Title: Polyamide resin composition
Inventor: KIM YONG-DOK
IPC: C08K5/10
Filed: 1982-06-16
Granted: 1985-02-23
Abstract: A polyamide resin composition is prepared from a polyamide resin, such as nylon-6, nylon-66, nylon-610, nylon, nylon-612, nylon-11, or nylon-12, by mixing the resin with melamin cyanulate and phthalic acid esters, such as dibutyl phthalate di-2-ethyl hexyl phthalate, ditridecyl phthalate, dicyclohexyl phthalate, or butyl benzyl phthalate. The weight ratio of polyamide resin to melamin cyanulate is 100 : 5-20, and that of melamin cyanulate to phthalic acid ester is 100: 0.5-10.
Patent KR-910001454-B1 (KR)
Inventor: NAKA HIROMITSU
IPC: E04F11/16
Filed: 1982-12-17
Granted: 1991-03-07
Abstract: 내용 없음.
Patent KR-900003214-B1 (KR)
Title: Cathode-ray tube
Inventor: KOBAYASI KATSUMI
IPC: H01J29/00
Filed: 1983-02-12
Granted: 1990-05-10
Abstract: The arrangement has a glass panel in front of a phosphor screen made of a material which has an X-ray absorption coefficient larger than that of the backing on which the phosphor layer is applied. The two panels are separated by means of a spacer and a LIQ. Coolant is incorporated into the space between the panels to enhance the heat radiation effect of the phosphor surface and to avoid the radiation of X-rays. The T-thickness of the screen (T1) and of the glass panel (T2) may be related such that their values in millimeters satisfy the following equations: T1 plus T2 is less than or equal to 11.5, 13.5T1 plus 30T2 is greater than or equal to 155.25, T1 is greater than or equal to 5 and T2 is greater than or equal to 2.
Patent KR-900006847-B1 (KR)
Title: Calendered peat moss board
Inventor: OVANS KEVIN J
IPC: A61L15/00
Filed: 1983-09-23
Granted: 1990-09-22
Abstract: A process for manufacturing a calendered peat moss board having enhanced absorbency comprising: forming a board comprising at least 20% by weight of peat moss; conditioning the board to have a water content which ranges between the values determined by the following equation W= 0.10795P+8.048+- 7.180 where in W is the water content of the conditioned board in weight percent based on the weight of bone dry board and P is the weight percent of peat moss based on the weight of bone dry board; and calendering the conditioned board to form the calendered board of enhanced absorbency.
Patent KR-890002953-B1 (KR)
Inventor: HARA TOMIHIRO
IPC: C23C22/83
Filed: 1984-08-28
Granted: 1989-08-14
Abstract: 내용 없음.
Patent KR-930000232-B1 (KR)
Inventor: FITTON MICHAEL GEORGE
IPC: C08B31/00
Filed: 1984-11-27
Granted: 1993-01-14
Abstract: 내용 없음.
Patent KR-900000829-B1 (KR)
Title: Photo voltage relay
Inventor: KINJER DANIEL M
IPC: H01L31/10
Filed: 1985-01-19
Granted: 1990-02-17
Abstract: The power MOSFET is controlled by illuminating a signal photovoltaic generator which produces an output current which charges the gate capacitance of the power MOSFET to turn on the device.  A sensing impedance which may be a diode, MOSFET or other component is connected between the photovoltalic generator and the gate of the power MOSFET.  The sensing impedance in the disclosed embodiment is a diode.  The sensing impedance forces the power MOSFET gate voltage instantaneously to follow the photo-voltalic generator output voltage.
Patent KR-920002788-B1 (KR)
Title: Process for making substituted phenoxy cyclo alkanols
Inventor: MA SHIH Y
IPC: C07C41/03
Filed: 1985-02-23
Granted: 1992-04-03
Abstract: A process for making a compound having the formula R-O-R<1>OH where R is phenyl or phenyl substituted with C1-C4 alkyl, C1-C4 alkoxy or methylenedioxy; and R<1> is C5-C6 cycloalk-1,2-ylene or C5-C6 cycloalk-1,2-ylene substituted with C1-C4 alkyl or C1-C4 alkoxy, useful as an intermediate in the manufacture of organic sulfite esters, is disclosed. In this process a compound of the formula ROH, where R has the meanings given above is reacted with a compound selected from the group consisting of cyclopentene oxide, cyclohexene oxide, cyclopentene oxide substituted with C1-C4 alkyl, C1-C4 alkoxy or vinyl and cyclohexene oxide substituted with C1-C4 alkyl, C1-C4 alkoxy or vinyl.
Patent KR-910008111-B1 (KR)
Inventor: MOTAR CAMILLO C
IPC: C07H17/08
Filed: 1985-04-02
Granted: 1991-10-10
Abstract: 내용 없음.
Patent KR-910002553-B1 (KR)
Title: Process for preparing polysaccharide-protein conjugates
Inventor: MARBURG STEPHEN
IPC: C07K17/06
Filed: 1985-05-09
Granted: 1991-04-24
Abstract: Covalently modified bacterial polysaccharides and proteins; covalent conjugates of such polysaccharides linked by a bigeneric spacer, which permits proof of covalency and facilitates purification of conjugated materials, with immunogenic bacterial membrane or other proteins, which conjugates are useful components of bacterial vaccines; and methods of preparing such polysaccharides, proteins and conjugates and of confirming the covalency of the linkage between polysaccharides and proteins.
Patent KR-900000464-B1 (KR)
Title: A demodulation circuit
Inventor: NODA TZDOMU
IPC: H03D7/16
Filed: 1985-09-26
Granted: 1990-01-30
Abstract: The suppressed carrier input and the output of the local oscillator are applied to a mixer.  The output of the mixer is applied to two phase detectors.  The output of a reference oscillator is applied directly to the first phase detector and applied through a 90 deg. phase shifter to the  second phase detector.  The outputs of the two phase detectors are applied to two comparators respectively.   The second comparator are applied to a multiplier.  The output of the second phase detector and of the fisrt comparator are applied to the second multiplier.
Patent KR-900003537-B1 (KR)
Title: Burner device
Inventor: DANAKA EIICHI
IPC: F04F5/46
Filed: 1986-01-07
Granted: 1990-05-21
Abstract: The fuel burner comprises a nozzle for ejecting fuel and an inner tube having an inlet end for receiving the fuel from the nozzle. The inner tube has first and second air inlet ports adjacent to and located in positions spaced longitudinally apart in the direction of axis of the inner tube and angularly apart about the axis for introducing primary air into the inner tube. The introduction of primary air produces a helically rising column of air-fuel mixt. and providing primary combustion at the outlet end. An outer tube coaxially surrounding the inner tube has secondary air inlet ports for introducing secondary air to provide secondary combustion at an outlet end. A sensor is located between the outlet ends of the inner and outer tubes for detecting the presence of the primary combustion.
Patent KR-940002097-B1 (KR)
Inventor: OYAMA MASAO
IPC: G11B23/087
Filed: 1986-06-05
Granted: 1994-03-17
Abstract: 내용 없음.
Patent KR-920009320-B1 (KR)
Inventor: YASUHIRO IKURA
IPC: G07F9/00
Filed: 1986-09-09
Granted: 1992-10-15
Abstract: 내용 없음.
Patent KR-890002159-B1 (KR)
Title: Silicon nitride ceramic sintered body
Inventor: KOMATUS MICHIYASU
IPC: C04B35/584
Filed: 1986-12-23
Granted: 1989-06-21
Abstract: The sintered silicon nitride article comprises (in wt.%); rare earth oxide (I) 10 max. (not zero); one or more of oxides, carbides and silicides of Hf, Ta and Nb (II) 10 max. (not zero); and silicon nitride the balance.  The total of (I) and (II) is 15 wt.% max..  The article also contains 10 wt.% max. (not zero) AlN. The total of (I), (II) and AlN is 15 wt.% max.  In gas turbine parts etc. article displays high mechanical strength at elevated temperatures.
Patent KR-890002450-B1 (KR)
Title: Motor powered rotary toothbrush of gum massager with detachable brush head
Inventor: MISA JOAQUIN C SR
IPC: A46B13/02
Filed: 1987-01-30
Granted: 1989-07-10
Abstract: The brush and massager comprises a hollow handle having a reversible motor secured inside with the motor's shaft protruding outwardly at one end.  The motor is connected in series to a double acting switch by an electric wire having a male plug at its end.  The motor's shaft is provided with a key and opposed bosses. A detachable head brush has a stem with a hollow inner end provided with a slot which is lockably engaged to the key on the motor's shaft.  Opposed recesses are disposed at its inner side to lockably engage with the opposed bosses on the motor's shaft. Rows of bristles are radially secured proximate to the outer end of the stem coversing entirely its circumferential surface.
Patent KR-900000813-B1 (KR)
Inventor: RYU HYUNG-SU
IPC: G05D22/02
Filed: 1987-05-15
Granted: 1990-02-17
Abstract: 내용 없음.
Patent KR-900005422-B1 (KR)
Title: Making method for inductor
Inventor: KIM JI-HO
IPC: H01F41/00
Filed: 1987-07-31
Granted: 1990-07-30
Abstract: The method for mass production and components minimization, includes process of printing conductive substance on magnet coating film, winding and press forming and cutting and heating of film. The method consists of magnet coating (20) for forming magnetic film (2); conductive substance printing (21) for printing conductive substance (3) and terminal part (4) on (2); drying (22) for (3); winding (23) for (2); first cutting (24) for (2); pressforming (25) for (2); second cutting (26) for press-formed body (6); heating (27) for (6); terminal forming (28) for making inductor (8) of chip-shape according to forming terminal (9) on (6).
Patent KR-900004363-B1 (KR)
Title: Clutch device
Inventor: YUN CHUNG-RYOL
IPC: F16D23/00
Filed: 1987-09-29
Granted: 1990-06-23
Abstract: The transmission which is mainly used for power-driven ships or heavy machinery, has a simplified structure for easy manufacture, minimises mechanical wear in the power transmitting, and has a reduced volume for cost saving, easy storage, and easy set-up. The transmission includes motor connecting body (1) with concaved groove (2), driving shaft (4) assembled with power transmitting gear (3), lower pressure hydroulic chamber (10) between supporting ring (8) and first moving groove (7), and high pressure hydraulic chamber between concaved groove (2) and first moving groove (7).
Patent KR-900008022-B1 (KR)
Title: Synchronous array logic circuitry and system
Inventor: RIZZ DAVID B
IPC: G01R31/28
Filed: 1987-10-16
Granted: 1990-10-29
Abstract: The array logic circuitry includes as many cells as necessary to perform the desired functions with each cell (10) including a transistor array (12) for evaluating a Boolean function and supplying the result to a storage element (18) through a multiplexer (15). The storage element latches the output signal and supplies it to other transistor arrays and/or other cells. The transistor array includes serially connected transistors for performing AND functions and parallel connected transistors for performing OR functions. The multiplexer operates under control of a test signal to configure the storage elements serially, thus enabling complete testability of all cells.
Patent KR-910000652-B1 (KR)
Title: Electronic switching dtmf signal receiving method
Inventor: KYUNG MUN-GUN
IPC: H04Q1/30
Filed: 1987-12-10
Granted: 1991-01-31
Abstract: The method comprises a first step for eliminating  dial  tone utilizing a filter (30) for detecting and discriminating efficient digit tone, a second step for modulating signal  sampled  by  8KHz descend sampling to 4KHz sampled signal, a third step for dividing sampled signal into high frequency band  and  low  frequency  band group digit tone, a fourth step for  analyzing  autocorelation  of the digit tone, and a fifth step for transmitting result of signal detecting by deciding existancy of signal and frequency of signal.
Patent KR-920005735-B1 (KR)
Title: Multiple spark ignition device
Inventor: LEE SONG-YOL
IPC: F02P15/10
Filed: 1987-12-30
Granted: 1992-07-16
Abstract: The fuel ignition circuit of the internal  combustion  engine can adjust the spark interval and frequency for varying the  spark energy discharge pattern to enhance  the  ignition  capacity.  The circuit comprises a detector  (IC1)  detecting  the  signal  of  a contact/ non-contact type sensor, a wave shaping circuit  including a condensor (C1), a resist or and a diode (D1), a pulse generation control switch (IC2) connected to  the  wave  shaping  circuit,  a pulse generator (IC3) controlled by the switch  (IC2),  a  counter (IC4) connected to an ignition coil via transistors (Q1,Q2).
Patent KR-910001477-B1 (KR)
Inventor: SAKAMOTO SHUNJI
IPC: B62D9/00
Filed: 1988-02-22
Granted: 1991-03-09
Abstract: 내용 없음.
Patent KR-910000748-B1 (KR)
Inventor: FERGUSON BLAIR Q
IPC: A61K38/00
Filed: 1988-05-31
Granted: 1991-02-06
Abstract: 내용 없음.
Patent KR-930005526-B1 (KR)
Inventor: TSUJITANI MASATOSHI
IPC: C10C3/00
Filed: 1988-06-18
Granted: 1993-06-22
Abstract: 내용 없음.
Patent KR-0130474-B1 (KR)
Title: Apparatus for reading an optically readable record carrier
Inventor: VAN DER MEULEN MEINE J P
IPC: G11B7/005
Filed: 1988-08-17
Granted: 1998-04-17
Abstract: Information reproduction apparatus moves optical beam with accurate and rapid address code. The information reproduction apparatus includes a motor(1) rotating a disk(2) which is optically readable. This disk is a digital audio disk of which center portion receives a digital audio information with a spiral track format. An optical system(3) focusing a beam to a disk(2) by using lens(5) is used to discriminate the information. A beam spot moves across the disk(2) in the radius direction by a radius direction moving means(7). The moving means(7) is formed as arm form. The optical system(3) is disposed on arm or slide. Laser beam follows an information track with a constant line speed, and moves in the radius direction.
Patent KR-910006359-B1 (KR)
Title: Reproducing control apparatus using drive pulse
Inventor: CHUN BYUNG-KWAN
IPC: G11B20/06
Filed: 1988-08-23
Granted: 1991-08-21
Abstract: The device for generating a new video effect by increasing or decreasing th enumber of scanning lines comprises the reset  pulse generator (2) for resetting the number selector  of  the  scanning lines (4) at the start point  of  the  1st  horizontal  line,  the timing controller of the scanning lines  (3)  for  generating  the pulse selecting the blanking period of lines, the number  selector of the scanning lines (4) for controlling the scanning lines,  the decoder (5) for selcting the output of the number selector of  the scanning lines (4) depending on the output of the outptu  selector (7), and the microprocessor (6)  for  setting  and  resetting  the decoder (5) at a certain output value of the timing controller  of the scanning lines (3).
Patent KR-910003899-B1 (KR)
Title: Rubbing material for fe
Inventor: BAEK SAE-HEUM
IPC: B22F5/00
Filed: 1988-11-12
Granted: 1991-06-15
Abstract: A Fe system rubbing material is manufactured by sintering the admixed powder consisting of 73-89.6% wt.% Fe, 2-5 wt.% C, 0.2-0.5 wt.% Mo, 0.2-0.5 wt.% P, 2-6 wt.% Cu  and  6-15  wt.%  Al2O3.  The material is useful for brake of great motive power machine such as a heavy equipment, train or airplane, and supplies very stabilized frictional force in water or oil.
Patent KR-910006709-B1 (KR)
Title: Oxide piezo-electric material
Inventor: KIM HO-GI
IPC: H01L41/18
Filed: 1988-11-24
Granted: 1991-08-31
Abstract: An oxide piezoelectric material  is  produced  by  mixing  an oxide component of Pb(Cd1/2W1/2)O3 (A)-Pb(Mn1/2W1/2)O3  (B)-PbTiO3 (C)- PbZrO3 (D) [0 <=A 0.1; 0 <= B <=0.1; 0.45 <= C  <=0.54; 0.38 <= D <= 0.49  with an oxide i.e. PbO, CdO, WO3, MnO, TiO  or  ZrO  by  the  ball mill, agitating and drying the mixt.,  firing  it  at  850  deg.C, ball- milling the mixt. of a fired powder and a binder, and heating and forming it at 900-1300 deg.C. The piezoelectric material has a high dielectric constant and electromechanical coupling factor.