baber/WOPTO huggingface dataset:
Patent JP-H04326051-A (JP)
Title: Pulse nucleus four-pole resonance device
Inventor: TOKITA JIRO
IPC: G01N24/00
Filed: 1991-04-26
Abstract: PURPOSE:To enable a transmission pulse to be cut fully and a size, a shape, and a placement of a coil to be optimized by cutting off a tuning circuit for reception coil when a high-frequency pulse is applied to and then cutting off a tuning circuit for transmission coil when a high-frequency pulse is not applied to. CONSTITUTION:A switch 19 is added in series to a variable capacitor 18 for adjusting resonance frequency within a tuning circuit for transmission coil 6 and it is so controlled by a controller 4 that the switch 19 is closed 4 when a high-frequency pulse is applied to and is opened when it is not applied to. Also, a switch 20 is added in series to a variable capacitor for adjusting resonance frequency 21 within a tuning circuit for reception coil 11 and it is so controlled by the controller 4 that the switch 20 is opened when a high-frequency pulse is applied to and is closed when it is not applied to, thus enabling both coupling to be small even if axes of the transmission coil and the reception coil are in parallel each other and a high-frequency magnetic field signal to be received without causing the reception coil to be affected by the transmission coil.
Patent JP-H10288435-A (JP)
Title: Refrigerator
Inventor: YAMAMOTO HIDEO
IPC: F25C5/18
Filed: 1997-04-15
Abstract: PROBLEM TO BE SOLVED: To simplify a mechanism for checking an ice storage box for ice and enhance reliability by providing an ice storage part for storing ice below an ice making pan rotatively driven by a rotation mechanism and checking the ice storage part for quantity of stored ice by detecting contact with the ice during rotation of the ice making pan. SOLUTION: In an automatic ice making machine installed within a refrigerator ice is produced by use of an ice making pan 13 and when the ice is detached into an ice storage box 12 provided below the ice making pan, a motor within a gear box 11 is energized for executing ice detaching operation. When the motor makes forward rotation, the ice making pan 13 is twisted to perform ice detaching and when a position detecting switch detects reversed state, the motor makes reverse rotation for restoration of an original position.  At this time if the ice making pan 13 comes in contact with the ice 14 before returning to an origin, a judgment whether reverse rotation time at normal ice detaching movement is shorter than a specified time or not is made and if the reverse rotation time is shorter, a judgment of full ice is made and standby state for ice detaching is held at a reversed position after stopping of reverse rotation.
Patent JP-S58410-A (JP)
Title: Anti-dive nose apparatus
Inventor: TAKAHASHI NORIYUKI
IPC: B60G17/08
Filed: 1981-06-23
Abstract: PURPOSE:To lock hydraulically the front left and right dampers when brake is applied to prevent them from being dived, by arranging normally opened valve means for cutting off hydraulic lines of front and rear dampers by braking with  hydraulic pressure. CONSTITUTION:When braking is required, and a master cylinder 22 is forced down, the hydraulic pressure in a braking hydraulic pressure line 21 is raised, thereby the hydraulic pressure in a chamber at the rear of a piston member 19 of a cylinder part 16 that is in communication with the line 21 is raised, and this hydraulic pressure acts on a hydraulic pressure surface 19a of the piston member 19. Thus the piston member 19 pushes a pusher 18 axially against a spring 15, a valve body 13 is moved to the right to close grooves 12a-12d on the body side at the lands between grooves 13a, 13d and thereby cutting off the forward dampers 1, 3 within lines 5, 6 and the rear dampers 2, 4. Consequently, the oil of the dampers 1, 3 is locked, and the diving is prevented by the locked hydraulic pressure.
Patent JP-H07304839-A (JP)
Title: Method for producing biodegradable aliphatic polyester
Inventor: TAKIYAMA EIICHIRO
IPC: C08G18/42
Filed: 1994-05-11
Abstract: PURPOSE:To provide a method for producing the biodegradable aliphatic polyester capable of being easily degraded under specific conditions, while maintaining physical properties which are sufficient on practical uses. CONSTITUTION:[A] 100 pts.wt. of an aliphatic polyester having a numberaverage mol.wt. of  deg.10,000 and a melting point of >=70 deg.C is reacted with [B] 0.1-5 pts.wt. of a polyvalent isocyanate in a melting state to produce the biodegradable aliphatic polyester having a number-average mol.wt. of >=20,000. The aliphatic polyester A is obtained by adding (3) 1-30 pts.wt. of polyethylene glycol having a number-average mol.wt. of >=200 to (1) a glycol component containing >=80mol.% of 1,4-butanediol (excluding the above-described polyethylene glycol) and (2) a dicarboxylic acid component containing >=80mol.% of succinic acid (or its anhydride), the total amount of the materials (1) and (2) being 100 pts.wt., and subsequently subjecting the mixture to a polycondensation reaction.
Patent JP-H06310552-A (JP)
Title: Molding die
Inventor: TABATA KATSUHIRO
IPC: H01L21/56
Filed: 1993-04-23
Abstract: PURPOSE:To shorten the time of the temperature rise of a chase part in a molding die for a semiconductor device when the chase part of the molding die for changing the products is exchanged. CONSTITUTION:A chase part 3b, which is exchanged for changing the product kind, is attached to a base part 3a of a molding upper die 3. A chase part 4b of a base part 4a of a molding lower die 4 is also attached. Heaters 11 are respectively inserted into a hole 3c and an hole 3d of the base part 3a and the base part 4a and a hole 4d and a hole 4f of the chase parts 3b and 4b. Electric power is supplied into the heaters 11. Thus, the molding upper die 3 and the molding lower die 4 are heated to the specified temperature.
Patent JP-S5622598-A (JP)
Title: Starting system for pulse motor
Inventor: UEMATSU MASARU
IPC: H02P8/08
Filed: 1979-07-31
Abstract: PURPOSE:To start a pulse motor excellently even when the stopping locations of a rotor and a stator are physically faulty by a method wherein the pulse motor is started by starting initial pulses with a long period. CONSTITUTION:Starting signals are applied to a starting case step-out preventive control circuit 4 while a rotation direction designating signal 6 is applied to a drive circuit 2. The starting case step-out preventive control circuit 4 is subject to the starting signals, and controls a slewing circuit 5 so as to generate starting initial pulses with a long period. A, B phases are excited first, but starting torque by the excitation is not generated. However, since B, C phases are excited by the first step pulses shown in (b) and the excitation is continued by value twice as long as conventional devices, a location of a rotor extremely approaches to a stable condition of a dotted line as a full line shown in (d). In the excitation of C, D phases by the second step pulses, the rotor is completely positioned under a stable condition of a dotted line as a full line shown in (e), and started under the maximum starting torque conditions.
Patent JP-H08288444-A (JP)
Title: Lead frame preparation
Inventor: HAKU REIKOU
IPC: C25D5/50
Filed: 1996-03-27
Abstract: PROBLEM TO BE SOLVED: To remove a foam being formed on a plating layer and to reduce a point corrosion by performing an overflow plating to the lead frame and forming the plating layer, and at the same time heating the lead frame that is plated at a temperature for recrystallizing onto the plating layer. SOLUTION: A thin plate material is pressed or etched, a lead frame is prepared, and an overflow plating is performed by palladium or a palladium alloy. The number of foams in the lead frame can be reduced at a predetermined temperature for causing recrystallization in a plating layer. Also, a gas constituent for reducing a corrosion resistance of, for example, hydrogen that flows from a plating liquid on plating can be removed, thus improving the corrosion resistance and the electrical conductivity of the lead frame.
Patent JP-H05295419-A (JP)
Title: Method for decarburizing molten steel
Inventor: TSUTSUMI NAOTO
IPC: C21C7/10
Filed: 1992-04-17
Abstract: PURPOSE:To provide a decarburizing method, by which the decarburizing time is shortened and an attainable carbon concn. is stably reduced, in the production of an extremely low-carbon steel in a vacuum degassing apparatus. CONSTITUTION:At the time of producing the extremely low carbon steel by using the degassing apparatus to execute the vacuum decarburizing treatment to molten steel 1, by blowing inert gas 7 containing hydrogen from the upper part while controlling oxygen concn. on the molten steel surface having particularly <=0.01% carbon concn. in a vacuum vessel 4 during the vacuum decarburizing treatment, the decarburization is executed. By this method, without prolonging the decarburizing treatment time, the extremely low carbon steel having lower carbon concn. than the carbon concn. attainable by the ordinary method, can stably be produced, and as the metal stuck to the vacuum vessel is little, removing action of the metal is facilitated and the decarburizing treatment efficiency is improved. The extremely low carbon steel can surely be produced in easy maintenance and at a low cost.
Patent JP-S5323818-A (JP)
Title: Production of rotor material for high speed hysteresis motors
Inventor: KURODA TETSUO
IPC: C21D8/12
Filed: 1976-08-18
Abstract: PURPOSE: To produce a rotor material of high strength and very high square ratio used for hysteresis motors by subjecting Ni maraging steel of middle effective coercivity to solution heat treatment, cold working and aging. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-H071162-A (JP)
Title: Composite material bonded under pressure and preparation thereof
Inventor: TOOMASU AARU PARAIRU
IPC: B23K20/04
Filed: 1994-03-31
Abstract: PURPOSE: To reduce mechanical defects in a pressure-bonded composite material of stainless steel and stabilized carbon steel by incorporating the carbon steel with columbium and carbide forming elements preventing the migration of carbon from the carbon steel. CONSTITUTION: A pressure-bonded composite material provided with at least one layer of stainless steel and at least one layer of stabilized carbon steel, and in which the layer of stainless steel is joined to the stabilized carbon steel along the boundary of the stainless steel/carbon steel is provided. The stabilized carbon steel contains carbon and columbium and furthermore contains at least one carbide forming element such as titanium and tantalum in amounts effective to prevent carbon migration from the carbon steel to the boundary region of the stainless steel/carbon steel. Thus, the region enriched with carbides is remarkably reduced from the boundary region of the composite material. Moreover, the crystal grain size of ferrite in the composite material is AST<=#6 (high value showing fine grain size).
Patent JP-S58217489-A (JP)
Title: Growing method of compound semiconductor crystal
Inventor: OGASAWARA KAZUTO
IPC: C30B29/40
Filed: 1982-06-08
Abstract: PURPOSE:To grow a titled crystal which has less defects and in which the deviation from the stoichiometric compsn. is compensated by using a Czochralski method while evaporating one of the constituting elements of a compd. semiconductor to be grown which is stuck beforehand on the inside wall of a reaction vessel. CONSTITUTION:An upper cock 6 and a lower cock 7 are opened to introduce a gaseous carrier saturated with, for example, high purity AsCl3 through a gas feed port 8 while the region where the deposition plates 4 of an upper vessel 2 exist is heated with a heater 5 wherein a crucible is omitted from a lower vessel 3. The AsCl3 is easily thermally decomposed and deposits on the vessel wall and the plates 4. When a necessary amt. of As deposits on the plates 4, the heater 5 is turned off, and the GaAs polycrystal packed in a crucible 10 is melted with an external heater 11. While the As vapor pressure on the plates 4 is kept equal to the As dissociation pressure of GaAs, a seed crystal 14 is dipped in a melt 12 and the single crystal of the GaAs semiconductor is pulled by using an automatic pulling device 15.
Patent JP-S63265575-A (JP)
Title: Motor
Inventor: KANEKO NORIO
IPC: H02N2/00
Filed: 1987-04-21
Abstract: PURPOSE:To drive a plurality of loads simultaneously with the direct coupling of a motor, by driving a plurality of output shafts separately by vibration generating sources, which are independent with each other. CONSTITUTION:A motor is constituted of an elastic body 1, made of rubber, first and second stators or first and second annular disc type vibrating bodies 2, 3, first and second rotors, having first and second output shafts 4a, 5a integrally, or disc type first and second rotary bodies 4, 5 and bearings 6. The elastic body 1 is the vibration damping body of a vibrating body 3 and becomes a supporting body. The vibrating bodies 2, 3 are constituted of a vibrating sheet, an electrode, a piezo-electric element and the like respectively. When predetermined alternative voltages are impressed on the piezo-electric elements respectively from alternative power sources under above described constitution, traveling wave vibrations are generated and rotary bodies 4, 5 are rotated. As a result, the output shafts 4a, 5a are rotated and respective loads, coupled with the output shafts 4a, 5a, may be driven simultaneously.
Patent JP-S61255753-A (JP)
Title: Metallic mold for die casting
Inventor: MIHARA TAKASHI
IPC: B22D17/32
Filed: 1985-05-10
Abstract: PURPOSE:To improve the quality of a die-cast product by forming a gate into the construction in which the sectional area thereof can be varied in one injection cycle and adjusting the speed at which a molten steel passes the gate, the sectional area of the gate, etc. CONSTITUTION:The gate 5 connecting to the cavity 4 of metallic molds 1, 2 is formed to the same sectional area as the sectional area of a runner 6 connecting thereto. A hydraulic cylinder 24 is embedded into the movable mold 2 near each gate 5A and the sectional area of the gate 5A is changed during one injection cycle. A movable piece 28 is mounted to a piston rod 27 of the cylinder 24 and is advanced to and reatreated from the root part in the gate 5A so that the sectional area thereof is expanded or reduced. The piece 28 is advanced when the pressure on the head end side of an injection cylinder 11 attains a prescribed value. The sectional area of the gate 5A is increased in the initial period of the injection to increase the injection speed to a high speed according to the above-mentioned mechanism. The pressure is quickly propagated to the molten metal in the cavity 4 by decreasing the sectional area of the gate 5A in the mid-way of injection.
Patent JP-S5623537-A (JP)
Title: Cylinder for internal combustion engine
Inventor: NAKAMURA KIYOSHI
IPC: F16J10/04
Filed: 1979-08-02
Abstract: PURPOSE: To improve resistance to wear and to reduce heat stress by making a cylinder liner of a sintered ceramic having a certain degree of coarseness on its sliding surface.  
     CONSTITUTION: A nitride such as Si 3 N 4 , AlN or TiN, an oxidized nitrode such as Si 2 ON or SiAlON, or a carbide such as SiC, B 4 C, TiC or ZrC, or an oxide such as Al 2 O 3 , ZrO 2  or MgAlO 2 , or a carbonized nitride such as Si 3 N 4 -SiC, or a glass ceramic such as MAS or LAS, is used as a ceramic to be sintered into cylinders. Powdered ceramic is formed and sintered by a hot press. Thus, a surface layer of 0.8W2.0s coarseness is applied on the inner surface of a cylinder liner. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-S5526606-A (JP)
Title: Method of producing magnetic bubble element
Inventor: KASAI TOSHIAKI
IPC: H01F10/24
Filed: 1978-08-14
Abstract: PURPOSE: To provide magnetic bubble elements with reduced distortions in their operational characteristics by providing a magnetic garnet layer having a grid constant of 12.383±0.010Å and subjecting it to liquid phase eqimerization in a flux solution composed mainly of PbO at an excessively cooled temperature of from 3 to 9°C.  
     CONSTITUTION: A garnet layer which is a medium for making magnetic bubbles is formed on a non-magnetic garnet (Gd 3 Ga 5 O 12 ) base and subjected to liquid phase epimerization in a flux solution consisting of a mixture of mostly PbO and partly B 2 O 3  added as solvent and a mixture of Y 2 O 3 , Sm 2 O 3 , Fe 2 O 3  and Ga 2 O 3  as solute at an excessively cooled temperature of from 3 to 9°C. As a result, there is formed a delicate and strong magnetic garnet layer having a grid constant of 12.383±0.010Å, which value is approximate to that of the underlying garnet layer and in no way capable of giving stress to this underlying layer, and also having a saturated magnetic flux density exceeding 1,000 gauss. The magnetic garnet layer works effectively as a stress buffer layer and also as suppressing any unusual occurrence of bubbles. As such, the bubble elements produced have quite stable properties with reduced distortions in their operational characteristics and widened operational margins. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-S5623147-A (JP)
Title: Sheet clamper
Inventor: KATOU TOSHIBUMI
IPC: B65H5/12
Filed: 1979-07-31
Abstract: PURPOSE: To enable the use of a compact suction pump, by selectively operating passage open/close means depending on the size of the sheet to open or close air passages which connect a negative pressure unit to some of numerous suction holes provided in a drum for sucking the sheet.  
     CONSTITUTION: When the sheet of large size (B4) is wound around the surface of the drum 2, a cover 25 provided inside the drum is located in a position A and a negative pressure generator 23 containing a fan and a motor is driven. When the drum 2 is rotated and the sheet S is sent out in the direction of an arrow in the figure, the front end of the sheet is sucked on a row of suction holes A. After that, the sheet S is sucked on groups of suction holes B 1 , B 2 ..., B 12 , C, D, E in that order according as the drum 2 is rotated. When a sheet of small size (A4) is wound, the cover 25 is displaced by 1/2P through a control means and a projection 25A and some of the suction holes 21 are shut off depending on the size of the sheet. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-H06310440-A (JP)
Title: Silicon carbide semiconductor and film formation method thereof
Inventor: OGINO SHINJI
IPC: C30B25/18
Filed: 1993-04-26
Abstract: PURPOSE:To provide a high-resistance semiconductor made of silicon carbide(SiC) with fewer crystal defects by carrying out epitaxial growth on a crystalline silicon carbide substrate using a mixture of hydrogen, silicon hydride, carbon hydride and germanium hydride. CONSTITUTION:A substrate 2 made of silicon carbide(SiC) is put on a susceptor 4, and the susceptor 4 is mounted on a reaction tube 3. The air in the reaction tube 3 is removed into a vacuum state, and HCl gas is supplied to remove an oxide film on an SiC substrate 2. After that, nonosilane, propane and hydrogen gases, and germanium hydride as a raw-material gas for adding a germanium element are supplied from a gas inlet 6, an epitaxial growth step is carried out by heating the SiC substrate 2. A flow rate of germanium hydride is so shifted that an SiC epitaxial layer 1 contains germanium with a concentration of 0.1 to 10atom%. Consequently, an empty hole of the crystal, which functions otherwise as a donnor, is filled with a germanium atom, and thereby high- resistance SiC semiconductor can be obtained.
Patent JP-H06318036-A (JP)
Title: Digital signature system
Inventor: TSUKAMOTO YUTAKA
IPC: H04L9/00
Filed: 1994-04-11
Abstract: PURPOSE:To prevent the trouble that a secret rule leaks to the outside by converting sent data by a personal terminal device according to algorithm based upon the secret rule. CONSTITUTION:Plural mutually different kinds of secret rule are stored in the personal terminal device 3 and then when respective signers who are going to sign. personal terminal device 3, have these respective signers have own inherent secret rule. For digital signing, the sent data of characters, etc., of a contract to be an object of signature are inputted from a keyboard 1 in the form of HIRAGANA (cursive form of Japanese syllabary) while the personal terminal device 3 is mounted on the input device 2. Converted data as an answer consisting of ciphered codes are displayed as signature data on a display part 4 and the signature data are sent along with the sent data on the contract, etc., to be an object of recognition. Then the converted data are so transmitted that a receiver side can be discriminated from the sent data.
Patent JP-S59223083-A (JP)
Title: Rotary head type magnetic picture recording and reproducing device
Inventor: IKEDA SUSUMU
IPC: G11B5/027
Filed: 1983-06-02
Abstract: PURPOSE:To improve the quality of reproduced picturers when the operation mode of a titled device is switched from the normal reproduction to the slow motion reproduction or still reproduction, by successively switching the output of plural magnetic heads in accordance with a prefixed order after a prefixed period when the operation mode is switched from the normal reproduction to the slow motion reproduction and obtaining reproduced signals. CONSTITUTION:A slow mode signal impressed upon a terminal 16 at the time of slow mode is inputted into a capstan controlling circuit 17 and a capstan motor controlling signal 18 is generated. A capstan motor is intermittently driven by this signal 18. By frequency-dividing the capstan motor controlling signal 18 at a dividing circuit 19, the first feeding four frames after the slow mode is set are detected. By means of the frequency-divided output, an output obtained as a result of large-small comparison 15 is selected until the four frames are completed and a head amplifier changeover signal generated by a fixed pattern generating circuit 21 is selected after the four frames, by switching an electronic switch 20. Then another electronic switch 22 is switched by the selected outputs and, by demodulating the output obtained by switching the electronic switch 22 by means of a demodulation circuit 23, a video output 24 is obtained.
Patent JP-H079296-A (JP)
Title: Stop for machine tool
Inventor: JIIKUFURIITO TEIIRE
IPC: B23Q16/00
Filed: 1994-05-12
Abstract: PURPOSE: To very safely and simply limit support in both positions of a striker bar, that is, the striker bar's approach to a tool in a stop mechanism for a machine tool, particularly in the right stop mechanism for a cross-cut saw. CONSTITUTION: A first stop 28 and a second stop 30 are arranged at different distances from a tool in a machine frame 2, and according to the positon of a striker bar 4, one of the first stop 28 and the second stop 30 abuts on a counterpart stop 34 adjusted on a support 8.
Patent JP-S63267805-A (JP)
Title: Oxidizing catalyst for high temperature service
Inventor: TSUNEYOSHI KIKUJI
IPC: F23D14/18
Filed: 1987-04-23
Abstract: PURPOSE:To burn methane efficiently and also obtain the excellent heat resistance of catalysts by a method wherein catalysts of which carriers use gamma-Al2O3 and also bear palladium are placed at the early stage and catalysts of which carriers use specified compound oxides and also bear a kind of material at least selected from noble metal, the oxides of base metal, and a specified compound oxide are placed at the later stage. CONSTITUTION:As a carrier covering the surface of a honeycomb-shaped heat resisting substrate, gamma-Al2O3 is used and catalysts composed of the said carriers bearing also palladium are placed at the early stage. As a carrier, a kind of compound oxide at least selected from BaO-Al2O3, SrO-Al2O3, and CaO-Al2O3 is used and catalysts composed of the said carriers bearing also a kind of material at least selected from noble metal such as platinum, platinum-rhodium, the oxides of base metal such as Mn, Co, Cr, Fe, etc., and a compound oxide such as LaCoO3, LaMnO3, etc., are placed at the later stage. Then, the catalysts are able to shows the activity to oxidize methane in a low temp. level and also their excellent heat resistance can be obtained even at a high temp. of 1,000 deg.C or more.