baber/WOPTO huggingface dataset:
Patent JP-H0635680-A (JP)
Title: Digital circuit computing logarithm and method of operating computer system
Inventor: SON DAO TORON
IPC: G06F7/556
Filed: 1993-04-20
Abstract: PURPOSE: To execute a highly precise and high speed logarithm calculation by executing the selection of a specified factor and the calculation of a minor total in parallel when a proper calculation system is used. CONSTITUTION: A digital circuit contains two partial circuit A and B which operate in parallel. The first partial circuit A contains a preceding zero detector 41, a barrel shifter 42, an adder 43 and a register means 44. The partial circuit B contains a look up table 45, a subtraction circuit 46, a register means 47 and a storage means 48 storing a constant value logBB equal to '1'. The two partial circuits A and B are connected by a mutual connection means 49. Here, a number M is expressed like an expression I, and f1 is an arbitrary factor. When the logarithm of the number M with respect to the base of logarithm B is calculated, the logarithm ratio of the expression I becomes like an expression II. When the expression II is transformed, it becomes like an expression III. Namely, the calculation of the logarithm of the number M with respect to the base B is shown by logBM.  When the factor fi and the logarithm logBfi are known, they are made to be additions Si .
Patent JP-S62250672-A (JP)
Title: Semiconductor device
Inventor: HIROSHI HATANO
IPC: H01L21/76
Filed: 1986-04-24
Abstract: PURPOSE:To shut off the effect of a wiring and a fixed positive charge to be exerted on a substrate, to complete element isolation and thereby to prevent the occurrence of a leak current between elements, by providing a conductive thin film layer kept at a fixed voltage in a thick insulating film. CONSTITUTION:A semiconductor substrate 11 and N-channel type MOS transistors Tr1 and Tr2 are covered with an insulating film 16 containing a field insulating film formed by a selective oxidation method, and a wiring 18 for circuit connection is provided on said insulating film 16, while a conductive thin film layer 17 is provided in the insulating layer 16. On the other hand, regions 20 and 21 adjacent to gate electrodes 15 of the N-channel type MOS transistors Tr1 and Tr2 and the end portions of source and drain regions 12 and 13 thereof are formed of an insulating layer 19 having the same film thickness as a gate insulating film 14. By providing the conductive thin film layer 17 kept at a fixed potential, in this way, no parasitic MOS transistor is formed on the surface of the substrate even when a fixed positive charge is generated in the insulating film 16 under the irradiation of radioactive rays. In other words, the fixed positive charge between the wiring 18 and the conductive thin film layer 17 and a potential applied on the wiring 18 have no effect on the substrate.
Patent JP-S62252303-A (JP)
Title: Production of silicon nitride powder
Inventor: YAMADA YOICHI
IPC: C01B21/087
Filed: 1986-04-24
Abstract: PURPOSE:The reaction of silicon disulfide powder with ammonia is followed by crystallization by heat treatment to enable the mass production of silicon nitride of high purity which is used as an engineering ceramic. CONSTITUTION:Silicon disulfide is distilled under reduced or normal pressure and crushed to give a powder of purified silicon disulfide. Then, the powder is allowed to react with gaseous or liquid ammonia and the product is heat- treated at about 1,200-1,600 deg.C to effect crystallization whereby the objective silicon nitride powder is obtained. Since silicon disulfide as the starting material can be readily purified, the silicon nitride powder of high purity is easily obtained.
Patent JP-H05261180-A (JP)
Title: Game device
IPC: G06F15/02
Filed: 1992-03-19
Abstract: PURPOSE:To provide a game device which is excellent in shock resistance and safety, light-weighted and has large angle of visibility and a liquid crystal display part including a bendable wide screen. CONSTITUTION:A display part 2 is formed by liquid crystal material containing ferroelectric high polymer liquid crystal. A touch panel 21 is integrally disposed on a display surface. An IC chip having a memory capable of storing plural kinds of games is built in the game device, and the device includes a terminal 10 from which the external information is inputted. The operation is performed by a key operation part 11, and electric power is supplied from a solar battery 12 to a power supply.
Patent JP-S60237897-A (JP)
Title: Damping circuit of stepping motor
Inventor: SOUSHIN KOUJI
IPC: H02P8/12
Filed: 1984-05-10
Abstract: PURPOSE:To improve the stability of an operation by inserting a damping resistor after the prescribed time is elapsed from the rise of a pulse, thereby improving the responsiveness of a stepping motor and eliminating a vibration. CONSTITUTION:Switching elements Qa, Qb are conducted during a time t2 after a time t1 from the rise of a motor drive pulse. Thus, an abruptness can be maintained without damping at the rising time, damping resistors Ra, Rb are inserted after rising to attenuate the vibrating current, with the result that the responsiveness of a stepping motor can be improved and a vibration is eliminated to improve the stability of the operation.
Patent JP-H04303921-A (JP)
Title: Semiconductor thin-film manufacturing apparatus
Inventor: MATSUI YUICHI
IPC: H01L21/203
Filed: 1991-03-30
Abstract: PURPOSE:To provide a simplified thin-film manufacturing apparatus which avoids a trouble when a rotary mechanism and an electric interconnection inside a chamber are irradiated with a molecular beam. CONSTITUTION:Molecular-beam fluxes 30, 31 which have been output from raw-material cells 23, 25 are directed to a substrate 29 on a substrate holder 22; a mask 27 provided with a hole 28 is installed between the substrate and the raw-material cells. In this case, the mask is arranged closer to the raw- material cells than a position where edge parts of the individual molecular-beam fluxes are crossed on the side closest to the raw-material cells.
Patent JP-S58212835-A (JP)
Title: Mold forming method
Inventor: MORITA AKIYOSHI
IPC: B22C9/02
Filed: 1982-06-01
Abstract: PURPOSE:To manufacture easily an extra-thin walled cast product with good dimensional stability by casting a material to be cast while a pattern material remains rigid at the transition temp. or below and releasing the mold when said material is resilient at the transition temp. or above. CONSTITUTION:A pattern provided with fins 1-5 on the surface of a base plate is formed of silicone rubber. Such pattern is dipped in liquid nitrogen so as to have rigidity, whereafter the pattern is set in a molding flask and a separately prepared non-foamable gypsum slurry is cast on the pattern quickly. The gypsum slurry is allowed to set. The pattern is released when the pattern restores the resilience, whereby the gypsum mold is manufactured. The casting mold is thereafter subjected to known stages such as drying and preheating, then aluminum is charged in the mold and a casting is manufactured.
Patent JP-S5719181-A (JP)
Title: Pulse arc welding method
Inventor: IDE EIZOU
IPC: B23K9/09
Filed: 1980-07-09
Abstract: PURPOSE: To enhance the stability of globule migration and improve welding work by detecting the timing for flying of a globule from a consumable electrode, and controlling pulse current supply time in such a manner that the migration of the globule takes place in the pulse current supply time.  
     CONSTITUTION: A device of performing the above-described pulse arc welding is constituted as follows: The above-described device is constituted of a consumable electrode 7, the arc 9 generated between the electrode 7 and materials 10 to be welded, a shielding gas 8, a reference time generator 12, etc. When the voltage of the arc 9 is first detected, the waveform shown is obtained and therefore this waveform is shaped and controlled, whereby the timing τ for detaching of a globule from the electrode 7 is measured with a measuring device 13. Next, the time τ for detaching of the globule and a pulse current supply time Tp are compared in a comparator 14 and a pulse welding source 6 is controlled with a regulator 15 so that the pulse current supply time is Tp when τ≤Tp and said supply time is τ when τ>Tp. 
     COPYRIGHT: (C)1982,JPO&Japio
Patent JP-S5520719-A (JP)
Title: Preparation of 1,4-dihydropyridine derivative
Inventor: SAKO KIYOHIDE
IPC: C07D211/90
Filed: 1978-07-31
Abstract: PURPOSE: To prepare 1,4-dihydro-2,6-dimethyl-4-(2'-nitrophenyl)-3,5-pyridinecarboxylic dimethyl ester, by reacting 2-nitrofenzal halogenide with methyl acetoacetate and ammonia.  
     CONSTITUTION: A 2-nitrofenzal halogenide shown by the formula (X is halogen) is reacted with methyl acetoacetate and ammonia in an inert selvent to prepare the desired compound. One mole of the compound shown by the formula I is used with 2.0W5.0 moles of methyl acetoacetate and 1.0W8.5 moles of ammonia. Methanol, pyridine, etc. may preferably be cited as the solvent. The reaction is preferably carried out in the presence of an organic base e.g., a tertiary amine, as a catalyst. An amount of the catalyst is not less than 0.1 equivalent based on the compound shown by the formula. The reaction is carried out in a temperature range of room temperature to 150°C.  
     EFFECT: The desired compound can be obtained readily, safely, efficiently in high yield.  
     USE: Medicines for angina pectoris. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-H01262779-A (JP)
Title: Ice for iced drink
Inventor: KAWABATA KAZUHISA
IPC: A23G9/04
Filed: 1988-04-14
Abstract: PURPOSE:To obtain the subject ice capable of preparing an iced drink in a short time simply by adding water thereto, by coating the surface of an ice with frozen coating film of a concentrated drink liquid. CONSTITUTION:The objective ice can be produced by cooling a concentrated drink liquid to a state just before freezing and applying the liquid to the surface of an ice cube cooled to <=-15 deg.C to form a frozen coating film on the surface.
Patent JP-S58210065-A (JP)
Title: Preparation of 2-hydroxynicotinic acid-based compound
Inventor: HAGA TAKAHIRO
IPC: C07D213/61
Filed: 1982-06-01
Abstract: PURPOSE:To obtain the titled compound useful as an intermediate for drugs, dye, agricultural chemicals, etc. by an easy reaction in a short reaction time in high yield in high purity, by hydrolyzing a 2-chloro-3-trichloromethylpyridine-based compound with sulfuric acid. CONSTITUTION:A 2-chloro-3-trifluoromethylpyridine-based compound shown by the formula I (X is H or Cl) is reacted with AlCl3 preferably in the presence of an inorganic compound such as KCl, Na2SO4, etc. as a retarding agent at 0-180 deg.C for 0.5-3hr to give a 2-chloro-3-trichloromethylpyridine-based compound (TCP for short) shown by the formula II, which is hydrolyzed in the presence of sulfuric acid at 50-130 deg.C for 1-3hr, to give the desired compound shown by the formula III existing as a tautomerism. The amount of sulfuric acid used is 0.1- 100mol based on 1mol TCP, and the concentration of sulfuric acid is 0.5-96wt%.
Patent JP-S61252113-A (JP)
Title: Vent plug of metal mold for vulcanization
Inventor: YODA KAZUTADA
IPC: B29C33/10
Filed: 1985-05-02
Abstract: PURPOSE:To make fitting and demounting of a vent plug into and from plug fitting hole easier, by providing a cylindrical plug main body having a little larger outer diameter than the inner diameter of a plug-fitting hole of a metal mold and setting a cross slit connected with the vent hole and extended to the other end of the plug main body. CONSTITUTION:A cylindrical plug main body 1 having a little larger outer diameter D1 than the inner diameter of a plug-fitting hole of a metal mold is provided. A air-evacuating hole 2 of a specified length L2 from an end 1a of this plug main body, namely the end surface to be located at the inside of the metal mold, extended to the axial direction, and a cross slit 3 connected to this vent hole 2 and extended to the other end 1b of the plug main body along to the axial direction of the plug are set up. A spring effect is produced in the vent plug itself by setting the cross radial slit 3 and thereby the vent plug is easily driven and fitted into the plug fitting hole 6 as the outer diameter of the vent plug decreases when it is fitted into the plug fitting hole having smaller diameter D2 than the outer diameter D1 of the plug main body 1. The vent plug can thereby surely adhere and be fixed to the inner wall of the plug fitting hole 6 by the spring effect of the vent plug itself.
Patent JP-H0347898-A (JP)
Title: Rust preventive and metal processing oil composition
Inventor: SAWANO HIROYUKI
IPC: C10N10/04
Filed: 1990-04-11
Abstract: PURPOSE:To obtain the title composition with lubricity, capable of reducing surface scratches and/or cracks in steel plate pressing operations and of suppressing oil stain developments at joints between steel plates by incorporating a base oil with a base value enhancer and an extreme pressure enhancer. CONSTITUTION:The objective composition >=1mg KOH/g in base value can be obtained by incorporating a base oil with (A) a base value enhancer made up of at least one compound selected from pref. high-base value alkaline earth metal sulfonates, sulfinates, salicylates and carboxylates and high-base value amines and (B) an extreme pressure enhancer made up of at least one compound selected from pref. ionic extreme pressure agents, benzothiazole compounds and thiadiazole compounds.
Patent JP-H08274015-A (JP)
Title: Heat-treating device and method
Inventor: UEDA YASUJI
IPC: H01L21/027
Filed: 1995-03-29
Abstract: PURPOSE: To provide a heat-treating device capable of breaking off the solvent rich atmosphere within a short time while maintaining the heating status of a processed element. CONSTITUTION: Within the heat-treating device, a cylinder unit 4 is secured in the vertical direction assuming itself as an axle beneath a hot plate 3 arranged inside a heat-treating device main body 2 so as to fix a lifting plate 5 on the piston rod upper end of this cylinder unit 4 further fixing the lower ends of pins 6 passing through the hot plate 3 to the lifting plate 5, besides, a poruous body 7 as a heating gas jetting means is arranged above the hot plate 3 inside the heat-treating device main body 2. A hollow part 8 is formed inside the porus body 7 in the discal form slightly larger than a semiconductor water W while a gas feed pipe 9 is connected externally downward to this hollow part 8 furthermore, an inlet.outlet 10 of the semiconductor wafer W is formed on one side of said main body 2 while an aperture part 11 is formed on the other side of the main body 2.
Patent JP-H10290067-A (JP)
Title: Method of forming electronic circuit and adhesive agent used therefor
Inventor: MIYAGAWA HIDEKI
IPC: C09J7/00
Filed: 1997-04-14
Abstract: PROBLEM TO BE SOLVED: To restrain both and electronic part from falling off and self-adhesive agent from sagging and spreading so as to protect the electronic part low in thermal resistance against damage and to enable the electronic part to the mounted with a suction nozzle. SOLUTION: An adhesive agent sheet 3a is attached to one side of a board 1 where electrodes 2a and 2b are provided. An electronic part 4 is attached to the adhesive agent sheet 3a and subjected to a thermal treatment. After the adhesive agent sheet 3a is cured, terminals 5a and 5b are soldered to the electrodes 2a and 2b respectively. Adhesive agent which becomes non-adherent and displays excellent bonding properties when it is heated is used as the adhesive agent 3a.
Patent JP-H0639650-A (JP)
Title: Driving method for pierce nut
Inventor: ONISHI YOSHIHIRO
IPC: B21D28/24
Filed: 1992-04-14
Abstract: PURPOSE:To provide a driving method for a pierce nut which eliminates necessity of pierce nut removal works at completing the works and can automatically prevent waste driving when panel supply is interrupted. CONSTITUTION:Only when a senser 11 is perceived that a panel 10 is put on a bottom mold 1, a pierce nut supply controller is set in its unlocked state, the piece nut 8 is supplied in a tool so as to be driven by a punch 4, and each time the punch 4 is raised after the driving, the pierce nut supply controller is allowed to return to its locked state.
Patent JP-H05285580-A (JP)
Title: Warm spinning method
Inventor: YASUNAGA SHIGENOBU
IPC: B21H1/04
Filed: 1992-04-14
Abstract: PURPOSE:To prevent the burning or the surface defect of the material to be worked by preliminarily coating the front surface of the material to be worked with the black color base solid lubricant and continuously supplying the black color base lubricant on the front surface of the material to be worked during forming. CONSTITUTION:At the time of starting the equipment, the front surface of spinning dies 15, 16 are coated with a black color base lubricant, for example, molybdenum disulfide paste, and the temperature thereof is increased up to the target working temperature. At the time of ironing the material 19 to be worked at the increased temperature by a working roll 14, the forming is continuously executed while continuously supplying the black color base lubricant on the front surface of the material 19 to be worked. In consequence, the absorbing efficiency of the radiating heat energy to the material 19 to be worked is remarkably increased, the safe and stable forming can be executed without impairing the heating efficiency. Since a radiation system heating means 20 is used, the structure of the dies 15, 16 is simplified, the temperature can be elevated to a target working temperature in a short time and a uniformly heating property and thermal insulation property can be improved with the reflection system thermal insulating means, when the effects of heating, thermal insulation and lubrication on the material to be worked can be compatibly attained.
Patent JP-H05243698-A (JP)
Title: Metal-foil-clad laminated board and its manufacture
Inventor: OKADA SHIGEHIRO
IPC: H05K1/03
Filed: 1991-04-24
Abstract: PURPOSE:To obtain a metal-foil-clad laminated board which is rarely warped or twisted, and is excellent in its dimensional stability. CONSTITUTION:On one side of a specific number of long base boards in which resin is impregnated, a long metal foil is superposed, and on the other side of it, a long separative film or a long metal foil is superposed. The boards thus prepared are passed through the vertically arranged laminator rollers for the provision of an elongated strip of laminated body, which is being transported continuously and hardened, and then, cut into specific dimensions. In this method for continuously manufacturing a metal-foil-clad laminated board, the metal foil used is the one the coefficient of extension of which is 10 to 50% at a temperature of 150 to 200 deg.C.
Patent JP-H06307178-A (JP)
Title: Excavation of ground
Inventor: FUJII SHUNSUKE
IPC: E21B7/10
Filed: 1993-04-21
Abstract: PURPOSE:To make it possible to excavate the ground vertically for an excavation method of the ground by using a bucket. CONSTITUTION:A bucket 17 is rotated and is filled with excavated earth from a cutting edge of the bottom thereof, and in the case the bucket is filled with earth, it is pulled out to open the bottom for moving earth to excavate the ground, and in the case the bucket reaches the inclined hard soil, it is pulled out. The bucket 17 is replaced with a bucket 11 with a steel pipe inserting the bucket main body to the inside of the longer steel pipe equipped with bits to the lower end. The bucket 11 is rotated and is filled with earth pressed into the steel pipe while excavating the hard soil with the bits 13 on the front end of the steel pipe from a cutting edge of the bottom of the bucket main body, and in the case the bucket main body is filled with earth, the bucket is pulled out to open the bottom for moving earth, and after the hard soil is started, the bucket is replaced with the initial one to drive forward.
Patent JP-H02271660-A (JP)
Title: Operation of semiconductor device and semiconductor device
Inventor: FUKUMA MASAO
IPC: H01L27/04
Filed: 1989-04-13
Abstract: PURPOSE:To eliminate a bad affection due to a short channel effect, i.e., a difficulty of a punch-through current being driven to flow by applying separate voltage to an n-type well of a p-channel MOS transistor and a p-type well of an n-channel MOS transistor. CONSTITUTION:A p type well 2 is fixed to higher potential than earth potential by a power supply 17, while an n type well 3 is fixed to lower potential by a power supply 18. Each well potential is fixed by connecting the power supplies 17, 18 different from a circuit power supply VDD to metal wirings 15, 16 through a p<+> type diffusion layer 7 and the electrode 15, and through an n<+> type diffusion layer 10 and the electrode 16. Herein, the well potential is set higher with respect to source potential in the case of an n-channel MOS transistor while being set lower in the case of a p channel MOS transistor. Accordingly, there is no interference between depletion layers 26 extending from source-drain regions 24a, 24b. Hereby, there is restricted channel length dependency of threshold voltage and short channel effect and as punch-through.
Patent JP-S5618947-A (JP)
Title: 2- 3-carbamoylphenyamino -n- 3,4-dimethoxyphenethyl acetamide trihydrate
Inventor: MIKI TOUSAKU
IPC: C07C237/30
Filed: 1979-07-25
Abstract: NEW MATERIAL:The titled compound shown by the formula I.  
     USE: An ulcer preventive drug. Having central ulcer preventive action.  
     PROCESS: An amine compound shown by the formula III is reacted with a carboxylic acid shown by the formula IV or its reactive derivative, or a compound shwon by the formula V (Y is halogen) is reacted with an amine compound shown by the formula VI preferably in the presence of a deoxidizer to give an anhydride shown by the formula I or its acid addition salt, which is treated with water in a solvent, e.g., a lower alcohol, stirred for several hours, and allowed to stand so that a hydrate is crystallized. The hydrate is filtered and subjected to air-drying at room temperatures to give a compound shown by the formula I. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-H03292610-A (JP)
Title: Magnetic head
Inventor: SATAKE TAIICHI
IPC: G11B5/60
Filed: 1990-04-10
Abstract: PURPOSE:To allow the bringing of a gap part near to a magnetic disk at the time of executing magnetic recording by forming the magnetic head in such a manner that the gap part position of this head can be adjusted. CONSTITUTION:A piezoelectric element 4 is built near the gap part 3 which is positioned at the rear end of a head slider 2 and executes the magnetic recording. The piezoelectric element 4 is contracted to prevent the contact of the gap part 3 with a magnetic disk 6 when the magnetic disk 6 stops and the magnetic head and the magnetic disk 6 are in contact with each other. The piezoelectric element 4 is elongated to bring the gap part 3 nearer to the magnetic disk 6 than a slider surface 5 when the magnetic disk 6 rotates steadily and the magnetic head floats by maintaining a specified floating quantity. Only the gap part 3 is brought near to the magnetic disk 6 without lowering the floating quantity over the entire part of the magnetic head in this way.