baber/WOPTO huggingface dataset:
Patent JP-H10327585-A (JP)
Title: Power converter
Inventor: SHIBATA HISANORI
IPC: H02M7/48
Filed: 1997-05-23
Abstract: PROBLEM TO BE SOLVED: To reduce losses in a reflux diode. SOLUTION: MOSFETs 4u-4w and 4x-4z are connected in antiparallel with reflux diodes 5u-5w and 5x-5z. When the MOSFETs 4u-4w and 4x-4z turn off, the forward current is caused to flow in the reflux diodes 5u-5w and 5x-5z. In this configuration, when for example, the reflux diode 5u is cut off, a small reverse voltage is applied to the reflux diode 5u by means of a reverse voltage application circuit 7, and thereby the reverse recovery of the reflux diode 5u is caused by a low-voltage DC voltage source 8 of the reverse voltage application circuit 7 so that losses generated in the reflux diode 75 are reduced.
Patent JP-H01316346-A (JP)
Title: Production of ester
Inventor: TAKEE KOUICHI
IPC: C07B61/00
Filed: 1988-05-30
Abstract: PURPOSE:To obtain a corresponding high-quality ester by subjecting 3-(3,5-di-t- butyl-4-hydroxyphenyl)propionic acid methyl ester and octadecyl alcohol, etc., to ester exchange by using an organotin compound as a catalyst. CONSTITUTION:A compound shown by formula I (R<1>-R<3> are H or 1-18C alkyl; m is 0-2) and a compound shown by formula II (Z is group derived from n-hydric alcohol) are subjected to ester exchange reaction by suing a monoorganotin compound (e.g., monoalkyltin oxide) as a catalyst at 160-200 deg.C to give a compound shown by formula III. The reaction is carried out under normal pressure initially, then under 0.1-100mgHg reduced pressure until completion of the reaction under flow of nitrogen or under reflux of the compound shown by formula II and the reaction is advanced by distilling a formed alcohol away. By using the catalyst, the reaction progresses in a short time at low temperature, the solution after the reaction is not discolored and the aimed substance useful as an antioxidant for organic materials can be economically obtained.
Patent JP-S5466813-A (JP)
Title: Video signal recorder-reproducer
Inventor: KOBAYASHI MASAAKI
IPC: H04N5/92
Filed: 1977-11-07
Abstract: PURPOSE: To reduce video signal band and perform good reproduction by inverting the video signal at each horizontal synchronizing signal thereby performing angle modulation.  
     CONSTITUTION: When the video signal is inverted alternately at each horizontal synchronizing period by an inversion circuit 2, the spectrum of the frequency of the video signal changes and the minimum frequency becomes 1/2×fH, whereby the video signal band is reduced. Here, fH denotes the horizontal scanning signal frequency. When this reduced video signal is subjected to angle modulation in a PM modulator 3 and is recorded in a magnetic tape and is reproduced, then the occurrence of beat and impulse type disturbances owing to the crosstalk which occurs when the FM modulation signal by the video signal of a wide band is prevented. In addition, S/N, etc. are improved by the video signal of the compressed band, thus reproduction of good quality image may be performed. The similar results may also be provided even by the use of a differentiation circuit and FM modulator or other for the angle modulation. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-H06166648-A (JP)
Title: Phenethyl alcohol derivative and recording material produced by using the derivative
Inventor: SATO TAKEHIRO
IPC: C07C43/295
Filed: 1993-05-12
Abstract: PURPOSE:To provide a phenethyl alcohol derivative useful as a storage stabilizer for developed color image of a heat-sensitive recording material and especially having improved plasticizer resistance. CONSTITUTION:The compound of formula I [Y is group of formula II or formula III; R<1> is H, lower alkyl or (substituted)aralkyl; R<2> to R<4> are halogen, NO2, lower alkyl, lower alkoxy, lower alkenyl or lower alkenyloxy; R<5> to R<7> are H or lower alkyl; Z is SO2, CO, C(CH3)2, S or O; m, n and p are 0-4], e.g. 4-(alpha-hydroxymethyl)benzyloxy)-4'-hydroxydiphenylsulfone. The compound can be produced by reacting a styrene oxide derivative of formula IV with a compound of formula V in a double-layer solvent consisting of water and a water- insoluble organic solvent in the presence of an inorganic alkaline substance at 80-95 deg.C) or in an organic solvent in the presence of a t-amine catalyst at 60-180 deg.C.
Patent JP-H086367-A (JP)
Title: Developing device
Inventor: HAMAGUCHI MAKOTO
IPC: G03G15/08
Filed: 1994-06-16
Abstract: PURPOSE:To perform mixing and charging in a small space and form a good image by bringing a charging member into elastic contact in the downstream in the rotating direction of a stirring means, guiding a toner to the stirring means, and charging the toners. CONSTITUTION:The toner supplied into a developing unit 2 by a feed roller 6 is tempararily held by a mixer 4 and a Mylar sheet 7 then fed to a development roller 3 side. The toner supplied to the developing unit 2 is charged and mixed in sequence, it is developed on a photoreceptor drum 1 by the development roller 3 with sufficient density and electrification, and a good image is formed. The Mylar sheet 7 serving as a charging member is formed into a comb teeth shape, sufficient elasticity is obtained, the toner is smoothly conveyed, the axial elasticity is made uniform, and uniform electrification is attained.
Patent JP-S63299097-A (JP)
Title: Illumination control method
Inventor: UENO JUNICHI
IPC: H05B37/02
Filed: 1987-05-29
Abstract: PURPOSE:To make it possible to realize a preferable and economical condition of illumination by discriminating personal conditions of a man who enters the specific area and controlling the illumination condition of the specific area based on the illuminance decided according to the personal conditions. CONSTITUTION:To each of luminous tube controllers LTC 101-10N, plural illuminating lamps IL15u-15x, 15v-15y are connected, and LTC101-10N make control of turn on, turn off and extinction of IL15u-15y, or their combination in responce to a command from a main control tube MCT4. The control conditions of illumination by LTC101-10N are decided by operation of a card reader CR12 and a ten-key TK13, provided at acceptance port each of rooms which should be controlled by LTC101-10N and LTC101-10N control illumination condition, in responce to a command from MCT4 following each of outputs from CR12 and TK13 via corresponding acceptance controller ACC9. According to personal conditions, thus, illumination is rationally controlled, so that comfortable and economical illumination condition is realized.
Patent JP-S63297834-A (JP)
Title: Friction material
Inventor: OGAWA HIROYASU
IPC: C09K3/14
Filed: 1987-05-29
Abstract: PURPOSE:To less decrease the temperature reliance of a friction coefficient, by constituting a friction material of specific wt.% carbon fiber of specific nitrogen content, auxiliary material and thermo-setting resin, in case of the non-asbestos friction material for a vehicle or the like. CONSTITUTION:A friction material is pressurized being molded by 0.5-30wt.% carbon fiber carbonized from acrylic system fiber having 14-21wt.% nitrogen content, auxiliary material of alamide fiber, steel fiber or the like or calcium carbonate and thermo-setting resin of phenol or the like. In this way, the friction material is obtained in density about 1.4 or more, tensile strength 3-35g/d, tensile elastic modulus about 200-1,300g/d further having insulating performance and low heat conductivity. Thus small and stable temperature reliance of a friction coefficient and an excellent power transmitting and braking function can be obtained.
Patent JP-H04357921-A (JP)
Title: Endoscope
Inventor: KISHI TAKAHIRO
IPC: G02B23/24
Filed: 1991-06-05
Abstract: PURPOSE:To provide the endoscope which is simple in constitution but is easily repairable and allows the reduction of the costs required for assembly and repair. CONSTITUTION:Braiding 27 fixed with annular members 25, 26 at both ends of blaids 23 is constituted in the endoscope 1 which has a bendable part 5 in an insertion part 3 and is formed with this bendable part 5 by fitting the part to the outer periphery of a core material 22 for curving. The annular members 25, 26 are freely attachably and detachably fixed at both ends of the bendable part 5 to mount the braiding 27. Then, the attachment and detachment of the braiding 27 from the bendable part 5 are easy.
Patent JP-S63297730-A (JP)
Title: Supercharged four-cycle engine
Inventor: TAKATSUKI RYUZO
IPC: F02B33/26
Filed: 1987-05-28
Abstract: PURPOSE:To simplify the structure of an engine wherein suction air compressed in a crank chamber is fed under pressure into a combustion chamber after normal aspiration, by having a piston function as a supercharging valve and using a common induction port as a normal aspiration port and a supercharging port. CONSTITUTION:A cylinder 1 is formed with a suction/discharge port 10 adapted to be communicated with a crank chamber 3 when a piston 2 is positioned near a top dead center. The piston 2 is formed with a discharge port 9 adapted to be communicated with the suction/discharge port 10 of the cylinder 1 and also communicated with the crank chamber 3 when the piston 2 is positioned near a bottom dead center. The suction/discharge port 10 is communicated with an induction port 11 and a suction hole 12. A check valve 13 is provided in the induction port 11 to permit the air flow only to the suction hole 12 and the suction/discharge port 10. A supercharging air is sucked into and discharged from the crank chamber 3 through the common suction/discharge pot 10. Further, a normal aspiration air and the supercharging air are induced through the common induction port 11. Thus, an output may be greatly improved.
Patent JP-H10308437-A (JP)
Title: Carrier and method of detecting wafer in carrier
Inventor: SAEKI HIROAKI
IPC: H01L21/67
Filed: 1997-05-08
Abstract: PROBLEM TO BE SOLVED: To enable a wafer detector to be enhanced in degree of freedom of installation-position and reduced in installation space by a method wherein a cube corner reflector which returns a reflected light toward the inside of a carrier main body is provided to the carrier main body, and the wafer detector is so structured as to detect whether a wafer is present in the carrier main body or not depending on that a reflected light is present or not. SOLUTION: A carrier 10 is positioned by a positioning member 25 and then mounted on a carrier mount 23. The carrier 10 is made to advance into an opening 22 to fit its lid 12 into the opening 22, and a wafer detector 30 is so arranged as to be positioned adjacent to a front panel 2 on the surface edge of the carrier mount 23. Light emitted from a light emitting device provided to the wafer detector 30 is made to impinge on a cube corner reflector provided to a carrier main body 11, reflected light from the corner cube reflector 14 is made to impinge on a photodetector provided to the wafer detector 30, whereby it can detected whether a wafer W is present in the carrier main body or not.
Patent JP-H09298381-A (JP)
Title: Discharge lamp lighting circuit device
Inventor: NAKAYAMA TORU
IPC: B60Q1/04
Filed: 1996-05-01
Abstract: PROBLEM TO BE SOLVED: To prevent the leakage of noise by making the case body of conductive material, and covering the section excluding a cut or hole section where a high-pressure cord is positioned with a noise shielding member consisting of conductive material. SOLUTION: A discharge lamp lighting circuit 1 accommodates a circuit board mounted with electronic parts within a case 2 made of material having conductivity. A connection cord is led out of the case body 2. A cover 4 is made in plate form which has the same plane form and size as a bottom plate 5 of a box 3. A roughly U-shaped cut is made in the position a little to the front at the right flank of the cover 4. The case body 2 is charged with urethane resin 22 until it reaches the position a little under the top of a peripheral wall 6 of the box 3, covering a starter circuit board 20 and a ballast circuit board 21 from the bottom 5 of the box 3. Hereby, high frequency noise can be prevented from leaking to the outside.
Patent JP-S5941625-A (JP)
Title: Intake device for multicylinder internal-combustion engine
Inventor: NAKAMURA SHIYUUICHI
IPC: F02B27/02
Filed: 1983-07-25
Abstract: PURPOSE:To enable good inertial supercharging over the entire speed range of an engine, by displacing, depending on the speed of the engine, the position of confluence of plural intake passages connected to cylinders overlapped of the periods of opening of intake valves. CONSTITUTION:A resonance pipe 2 is connected to the upstream end of the confluence part 1a of an intake manifold 1 whose downstream end is coupled to all the cylinders #1-#6 of a multicylinder engine such as a six-cylinder engine. The confluence part 1a and the resonance pipe 2 are provided with a shutter 5 which symmetrically divides a passage 3 connected to a first group of cylinders #1-#3 from a passage 4 connected to a second group of cylinders #4-#6 and can be continuously moved to the position of upstream confluence of the passages 3, 4. The movable partition 5c of the shutter 5 is moved upstream by a motor 7 depending on the detection signal of an engine speed detector 6 accompanying with the increase of the engine speed to heighten the natural frequency of intake pressure oscillation. The purpose is thus attained.
Patent JP-H06350216-A (JP)
Title: Printed board
Inventor: TAKEDA TADASHI
IPC: H05K3/34
Filed: 1993-06-04
Abstract: PURPOSE:To connect the patterns on the opposite sides of a board through a simple structure by forming a land by copper plating around a component fixing hole, making a via hole through the land, and subjecting the side face of the via hole to copper plating to form a connector for connecting the patterns formed on the opposite sides of the board. CONSTITUTION:Patterns 2 are formed by copper plating on the opposite sides of a board 1 having a component fixing hole 3. A land 4 is formed by copper plating around the component fixing hole 3 and a via hole 5 is made through the land 4. The inner face of the via hole 5 is then subjected to copper plating thus forming a connector for connecting the patterns 2 formed on the opposite sides of the board 1.
Patent JP-S5657069-A (JP)
Title: Transfer device
Inventor: AOKI TAKAO
IPC: G03G15/16
Filed: 1979-10-17
Abstract: PURPOSE: To prevent the deviation of transfer paper and obtain good copied images by supporting on a drumlike an insulation-characteristic film carrying a transfer material on its surface substrate and actuating transfer corona discharge from the back of the insulation-characteristic film.  
     CONSTITUTION: A transfer means 19 is constituted around a drumlike substrate 19' of transfer paper P and an insulation-characteristic film 196 is supported on the outside circumferential surface thereof, with its leading end and trailing end in the rotating direction fixed and the two ends in the axial direction loosely contacted to an extent of not becoming loose. A corona discharger 28 is disposed on the inner side of the transfer paper substrate 19', and when the transfer paper P comes to the position where it is ought to contact the peripheral surface of the photosensitive drum, the corona discharge current of the polarity opposite from that of the toner charge is applied on the back surface of the insulation-characteristic film 196. The insulation-characteristic film 196 is attracted to the photosensitive drum 2 surface together with the transfer paper P by the electrostatic attraction force generated at this time, whereby the toner images are transferred from the drum surface to the transfer paper P surface. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-S5467386-A (JP)
Title: Complementary semiconductor device for high dielectric strength
Inventor: OKUNO MASARU
IPC: H01L27/092
Filed: 1977-11-08
Abstract: PURPOSE:To obtain resistance-incorporated complementary device having dielectric strength of more than 100 V at high density, without providing an isolation layer of MOSFET between P and N type or between identical types. CONSTITUTION:(100)-plane Si 21 is formed on a sapphire substrate 20, and SiO2 thick film 22 and thin film 23 are selectively formed. After selective opening, B ion 24 is injected and oxidized in dry state, thereby simultaneously forming P<+> layers 27, 28 and p-layers 25, 26. Opening the film 22 again, phosphorus is piled and oxidized in wet state, and N<+> layers 29, 30, 31 are selectively formed. Removing all the films but SiO2 40 from the region in which MOSFET and resistance are to be set up, and Si is mesa etched in aqueous KOH solution, and the device is isolated. Eliminating the mask 40, coating with CVD SiO2 film, and selectively opening, the gate oxide film is formed by wet oxidation. Then,accumulating phosphorus, and a protective film is composed by high temperature treatment in N2. Providing an electrode window and evaporating Al 33, the electrode and the device is wired together. Then, after sintering in N2, high dielectric strength CMOS is integrated on SOS substrate at high density.
Patent JP-H08329410-A (JP)
Title: Magnetic head
Inventor: SUZUKI ATSUSHI
IPC: G11B5/133
Filed: 1995-05-31
Abstract: PURPOSE: To provide a magnetic head having both of excellent wear resistance and electromagnetic conversion characteristics. CONSTITUTION: Each magnetic core halves 1, 2 composed of a first and second single crystal ferrite 11, 12, respectively. Then these magnetic core halves 1, 2 are joined with the single crystal ferrite 11 side facing each other as joining faces (gap faces) by melting a welding glass 5 to obtain a magnetic core 3 having a magnetic gap g.
Patent JP-H04362175-A (JP)
Title: Vacuum device
Inventor: TAJIMA MOTOFUMI
IPC: C23C14/56
Filed: 1991-06-06
Abstract: PURPOSE:To decrease the running cost of vacuum device by effectively using liquid nitrogen or gaseous nitrogen flowing out from a liquid nitrogen reserving part. CONSTITUTION:This vacuum device is provided with a vacuum vessel 1 and a vacuum pump 3 sucking the vacuum vessel 3, a liquid nitrogen reserving part 11 for cooling equipped with a feed opening part 20 supplying liquid nitrogen, and an exhaust opening part 21 discharging liquid nitrogen or gaseous nitrogen. A cooling means C for cooling the vacuum pump 3 is arranged so that the vacuum pump 3 may be cooled by liquid nitrogen or gaseous nitrogen flowing out from the liquid nitrogen reserving part 11.
Patent JP-S5925136-A (JP)
Inventor: KAWASAKI KENJI
IPC: H01H50/64
Filed: 1982-07-30
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-H084169-A (JP)
Title: Floor slab
Inventor: TAKAHASHI TAKESHI
IPC: E04B5/02
Filed: 1994-06-16
Abstract: PURPOSE:To provide a high strength floor slab. CONSTITUTION:A bowl-shaped load dispersion member 30 is installed to a steel plate 1 in a turned down state between the steel plate 1 and a dowel 10, thereby forming a dowel connection surface 32 to which the down 10 is connected on the end of the load dispersion member 30 on the dowel 10 side. The steel plate connection surface 32 to which the steel plate 1 is connected, is formed on the side of the steel plate 1 in such a fashion that a distance D1 on both ends of the steel plate 1 in the longitudinal direction of the steel plate connection surface 32 may exceed a distance D2 on both ends of the dowel connection surface 31.
Patent JP-H0431646-A (JP)
Title: Idle speed controller of internal combustion engine
Inventor: KOBAYASHI BUNRO
IPC: F02D41/16
Filed: 1990-05-24
Abstract: PURPOSE:To prevent temporary increase in idling rotational speed in the case when a load application period of time is short by detecting the load application period of time, and changing a control quantity variable characteristic at the time of load interruption based on whether the detected load application period of time is less than a characteristic variable time or more. CONSTITUTION:In an idling rotational speed controller, an electromagnetic valve for compensating idling is interposed on the way of a bypass passage which is provided for bypassing a throttle valve to an intake pipe. An intake air quantity is adjusted and an idle rotational speed is feedback-controlled to a target value by controlling the opening of the electromagnetic valve by a feedback control means A. In this case, a load application detecting means B which electrically detects the load application is provided, and a control quantity of the electromagnetic valve is increased by a specified quantity by a control quantity increment means C at the time of the detected load application A load application time detecting means D is provided, and a control quantity changing characteristic at the time of load interruption is made different by a compensation means E depending open whether, the load time application period of is less than a specified characteristic variable time or more.
Patent JP-2000322002-A (JP)
Title: Manufacture of display device
Inventor: IKEDA TSUTOMU
IPC: G09F9/37
Filed: 1999-05-14
Abstract: PROBLEM TO BE SOLVED: To improve display quality by eliminating dispersion in display density between respective picture elements. SOLUTION: As shown in Figs. (b) and (c), charged electrophoretic particles 5 being deposited on an attraction board 22 (A) are transferred to a substrate 1b forming the display device. By this, in the manufactured display device P1, an equal quantity of the charged electrophoretic particles 5 is distributed to each of picture elements. By applying a voltage of appropriate polarity to electrodes 6, 7, the charged electrophoetic particles 5 are moved separately at each of the picture elements so as to display an optical image. Because the equal quantity of the charged electrophoretic particles 5 is distributed to each of the picture elements, dispersion in display density between the respective picture elements can be eliminated.
Patent JP-H10323876-A (JP)
Title: Crosslinked polyolefin tube and its manufacture
Inventor: IWASA KOICHIRO
IPC: B29L23/00
Filed: 1997-05-26
Abstract: PROBLEM TO BE SOLVED: To provide a crosslinked polyolefin tube of superior bonding properties by heat fusion bonding in which the lowering of bonding strength and distortion are not generated and also provide a manufacturing method thereof. SOLUTION: In a manufacturing method for a crosslinked polyolefin tube, polyolefin resin is melt kneaded together with a silane compound and extrusion molded into the tubular shape, and then only one of either the inner face or the outer face of the tube is exposed to water or water vapor to carry out the water crosslinking to crosslink one of the inner layer or the outer layer of the tube so as to set the gel fraction of 65-100%, while the gel fraction of the outer layer is set as 0-40%.
Patent JP-H01303193-A (JP)
Title: Needle thread supplying mechanism for twin needle sewing machine with one needle stopping function
Inventor: YAMAMOTO YUJI
IPC: D05B47/04
Filed: 1988-05-31
Abstract: PURPOSE:To prevent the occurrence of failure sewing in which a needle thread appears on the rear of a piece of cloth or loosens by composing a thread guide to change the thread handling area of the needle thread and generate looseness in the thread handling area when one needle is stopped and reset the thread handling area to its original position and absorb the above-mentioned looseness when one needle is driven again. CONSTITUTION:When one needle is stopped, a thread guide 6 is raised GH in timing immediately after an upper dead point AH of a needle thread take-up 4 to come after an upper dead point NH of a needle bar 2. When one needle is driven to be reset, the thread guide 6 is reset GL in timing immediately after the upper dead point NH of the needle bar 2 to come after a lower dead point AL of the needle thread take-up 4. Since the drawing out of the needle thread at a stopping side while one needle is stopped can be absorbed by the needle thread loosen in the above-mentioned thread handling area by changing the length of the thread handling area by the displacement of a passing position due to the moving back and the resetting of the thread guide 6, and since the needle thread is never drawn out actually, proper needle thread supplying quantity can be secured at the time when one needle is driven again.