baber/WOPTO huggingface dataset:
Patent JP-S62111942-A (JP)
Title: Production of 3,4,5,6-tetrafluorophthalic acid
Inventor: KAIEDA OSAMU
IPC: C07C51/06
Filed: 1985-11-11
Abstract: PURPOSE:To obtain the titled compound safely and in high yield, by converting 3,4,5,6-tetrafluoronitrile in a highly concentrated aqueous solution of sulfuric acid at low temperature into an intermediate reaction product having low volatility, diluting the reaction into a desired sulfuric acid concentration and carrying out hydrolysis. CONSTITUTION:3,4,5,6-Tetrafluorophthalic acid is reacted in >=75wt%, preferably >=85wt% highly concentrated aqueous solution of sulfuric acid at preferably 20-130 deg.C to give an intermediate reaction product comprising mainly 3,4,5,6- tetrafluorophthalimide, which is hydrolyzed in an aqueous solution of sulfuric acid having low concentration, preferably 35-75wt% at 90-170 deg.C to give 3,4,5,6- tetrafluorophthalic acid. USE:An intermediate for polymer material, drugs or agricultural chemicals.
Patent JP-S60144115-A (JP)
Inventor: TOUKAWA TSUNEHISA
IPC: H02H9/04
Filed: 1983-12-30
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-S63104524-A (JP)
Title: Digital/analog converter
Inventor: IKEGAMI MASAKAZU
IPC: H03M1/66
Filed: 1986-10-21
Abstract: PURPOSE:To remarkably improve a linearity error by using l bit of 2<m> digital/ analog converters (DAC) and sequentially and alternately outputting the outputs from 2<m> DACs one bits by one bit and executing the addition. CONSTITUTION:A titled converter provides l bit of DACs 7-10(l+m=n and each is integer) from a first one to a 2<m>th one (m>=2 and an integer) and a control signal generation circuit which gives control signals to the respective DACs 7-10 so that the respective output voltages of the DACs 7-10 from the first to the 2<m>th are sequentially and alternately added to be outputted one bit by one bit. N bit of data input 1 is converted into (N-2) bit of data E(2), D(3) and B(5) in an operational circuit 6 so as to be impressed on the DACs 7-10 and becomes the output from the digital/analog converter passing through an adder 15. Therefore in case of constituting the N bit of DAC with N-1=l bit of two DACs, the output becomes a value obtained by dividing the full scale of the respective DACs in the quantity of step by 2<l> and gain error is compressed in an equal ratio. Thus the linearity error can be improved.
Patent JP-H03111886-A (JP)
Title: Led backlighting structure
Inventor: YAMAMOTO HIROYUKI
IPC: H01L33/00
Filed: 1989-09-27
Abstract: PURPOSE:To reduce the total heating value of an entire surface irradiation type backlighting structure for negative type liquid crystal display by turning on only necessary LED chips which are partitioned with partition walls. CONSTITUTION:An LCD display device 34 is provided on the entire surface panel of a counter and various displays are made by key operation. The display device is partitioned into display areas 401(401a-401f) and when they are active, light is transmitted through color filters of parts of picture elements. An LED back light 36 is arranged on the reverse surface of the display device 34. Then LEDs 101 are mounted on its substrate 104 at positions corresponding to the display areas 401 and electrode terminals 105 are led out. The partition walls 103 which are sectioned in a V shape are provided between the LEDs to eliminate or reduce mutual light interference and the brightness of light emission colors in the display areas 401 is uniformed. A diffusion sheet 102 is attached to the front surface and diffuse the output light of the LEDs to the outside. Only necessary LED chips are turned on to reduce the total heating value of the counter.
Patent JP-H08112401-A (JP)
Title: Slot machine
Inventor: UCHIDA ATSUSHI
IPC: A63F5/04
Filed: 1994-10-18
Abstract: PURPOSE: To prevent an unfairness from being caused by the superiority or inferiority on game technique by displaying the difference in position on a reel between a detected pattern and a stop pattern, thereby allowing any player to easily grasp the state where a drawing result is differed from the detected pattern, and a priority is given to the drawing result to stop the stop pattern with a prescribed distance from the detected pattern on the reel so as to draw his/her attention to the following operating timing of a stop switch. CONSTITUTION: This slot machine has a difference number arithmetic means 160 for calculating the difference in position on a reel between a detected pattern detected by a stop pattern detecting means 150 and a stop pattern stopped by a reel control means 143; and a difference number display means (for example, difference number display devices 40-42) for displaying the difference number calculated by the difference number arithmetic means 160.
Patent JP-H0898489-A (JP)
Title: Disc drive motor
Inventor: KUDO SHINICHI
IPC: H02K29/00
Filed: 1994-09-20
Abstract: PURPOSE: To obtain a thin disc drive motor in which the disc mounting surface of a hub base is protected against oscillation at low cost. CONSTITUTION: The disc drive motor comprises a substrate 1, a shaft 2 bonded thereto, an armature 3, a drive magnet 5 mounted on a rotor case 4, a hub base 6 for mounting a disc bonded to the rotor case 4, a rotor 7 including the rotor case 4, the drive magnet 5 and the hub base 6, and a bearing means 8 for supporting the rotor 7 rotatably while receiving a load in the thrust direction. An inner hole 6a of the hub base 6 slides, on the inner circumferential surface thereof, against the outer circumferential surface of the shaft 2. The bearing means 8 is held between the hub base 6 and the substrate 1 and fitted over the shaft 2 so that the bearing means 8 abuts against the hub base 6.
Patent JP-H06103758-A (JP)
Title: Dynamic type semiconductor storage device
Inventor: TAKEMAE YOSHIHIRO
IPC: G11C11/406
Filed: 1992-09-21
Abstract: PURPOSE:To provide the dynamic type semiconductor storage device which reduces current consumption at the time of self-refreshing by dropping the power source voltage to be supplied to a self-refreshing means by a voltage dropping means. CONSTITUTION:A voltage dropping circuit 31 drops the high-potential power source voltage VCC from the outside to be used in a clock generating section 1, a memory section 2 and a memory peripheral section 3 and supplies this voltage to a self-refreshing section 4. The power source voltage to be supplied to the self-refreshing section 4 is dropped by this voltage dropping circuit 31, thereby, the current consumption of the self-refreshing section 4 is suppressed and the dynamic type semiconductor storage device which reduces the current consumption at the time of self-refreshing is obtd.
Patent JP-H0893000-A (JP)
Title: Hydraulic pilot operating circuit
Inventor: TSUJI MASAFUMI
IPC: F15B11/16
Filed: 1994-09-21
Abstract: PURPOSE: To improve composite workability by a method wherein one working stroke of a second control valve is limited by the pilot pressure of a pilot line by which a first control valve is switched. CONSTITUTION: When a traveling motor 3 and an actuator 6 for an arm are operated, a piston 28 is moved in the direction of an arrow mark by a given amount L in such a way that pressure oil is exerted on the pilot pressure introduction passage of an operation part 5b of a control valve 5 for an arm through a branch pilot line 11a. In this case, even when a pilot pressure is exerted on an operation part 5a of the control valve 5 through a pilot line 13 to bring a maneuvering lever 9 for an arm into an excavation position and switch the control valve 5 for an arm to a position (a), since the piston 28 is moved in the direction of an arrow mark by a given amount L, a spool 26 of the control valve 5 for an arm is limited by the piston 28 so that whole stroke operation is not effected, and the opening area of a spool 26 is decreased.  This constitution decreases an amount of pressure oil fed to the actuator 6 for an arm during combined operation, and improves matching of the drive speed of the traveling motor 3 with that of the actuator 6 for an arm.
Patent JP-H03112764-A (JP)
Title: Booster
Inventor: FURUTA YOICHI
IPC: B60T13/569
Filed: 1989-09-27
Abstract: PURPOSE:To improve an operational feeling by fixing a partition to a valve plunger in a valve mechanism, built in a hub member of a power piston, and increasing a pressure in a pressure chamber, partitioned by this partition, with a predetermined delay time provided by a throttle passage. CONSTITUTION:A power piston 20, which is displaced by a differential pressure between a fixed pressure chamber R1 and a variable pressure chamber R2 to contain a diaphragm 23, is provided in a housing 10, and a valve mechanism 30, comprising a valve plunger 31 and a cylindrical valve 32 or the like, is built in a hub member 21 in the center of the power piston 20. In the case of a booster thus obtained, a partition 90, which contains a diaphragm 92, is provided between the hub member 21 and a front plunger 31A of the valve plunger 31, and a pressure chamber R3, to which a pressure in the fixed pressure chamber R1 is always given through a through hole 21e provided in a front hub 21A of the hub member 21, is partitioned in the front of the partition 90. While a pressure chamber R4, which communicates with the variable pressure chamber R2 through a throttle passage 21f provided in a rear hub 21B, is partitioned in the rear of the partition 90.
Patent JP-H04129196-A (JP)
Title: Metal halide lamp lighting device
Inventor: YOKOI YASUO
IPC: H05B41/24
Filed: 1990-09-19
Abstract: PURPOSE:To greatly lengthen the life by installing a series resonance circuit set such that resonance a frequency becomes equal to the output frequency of an inverter and connecting a metal halide lamp in parallel to the capacitor. CONSTITUTION:In an inverter 8 is driven to light up a metal halide lamp 9, the impedance (r) of the metal halide lamp 9 connected to a capacitor 8b in parallel is infinite under the condition before lighting and has no effect on a resonance phenomenon, so that series resonance phenomenon takes place in a series resonance circuit 8. In a perfect resonance condition, the terminal voltage of this capacitor 8b becomes a high voltage, and this high voltage is applied as a discharge start voltage to the lamp 9. When the lamp 9 starts discharge with application of this high voltage, the impedance (r) of this lamp 9 decreases rapidly, so that series resonance stops. Thereafter, the temperature of lighting tube rises up, and resultantly, the impedance (r) becomes large and is kept at a fixed stable and as a result, the tube voltage of the lamp 9 is stabilized, too.
Patent JP-H02102116-A (JP)
Title: Production of alumina fiber or membrane
Inventor: FUJIKI YOSHINORI
IPC: C01F7/36
Filed: 1988-10-05
Abstract: PURPOSE:To obtain alumina fibers or membranes excellent in filament forma tion, homogeneity, stability and spinning properties by forming an aqueous viscous solution of an aluminum organic compound in a specific organic acid into fibers or membranes and sintering the formed product. CONSTITUTION:An organoaluminum compound soluble in an aqueous organic acid is dissolved in an aqueous solution of an organic acid bearing 2 or 3 carboxyl groups and 1 or 2 hydroxyl groups or bearing 2 carboxyl groups, concentrated with heat to give a viscous solution. Then, the viscous solution is extruded through nozzles or a slit to form filaments or a membrane and sintered to give the objective filaments or a membrane. The organoaluminum compound is, e.g., aluminum alkoxide or aluminum carboxylate. The organic acid bearing 2 or 3 carboxyls and 1 or 2 hydroxyls is, e.g., malic acid, tartaric acid or citric acid. The organic acid bearing 2 carboxyls is, e.g., oxalic acid or iminodiacetic acid.
Patent JP-H0889612-A (JP)
Title: Ball conveying device
Inventor: YOKOYAMA YOSHIO
IPC: A63B69/36
Filed: 1994-09-21
Abstract: PURPOSE: To provide a ball conveying device whose durability and ball conveyance property are excellent and noise is small. CONSTITUTION: In the case of a ball conveying device in which a ball is conveyed by falling down to a lower side ball conveying route 2 from an upper side ball conveying route 1, its ball falling route 3 is a repetition of a recessed and projecting route consisting of each unit of a horizontal progress portion 4; a first perpendicular falling portion 5 following the horizontal progress portion 4; a horizontal return portion 6 following the first perpendicular falling portion 5; and a second perpendicular falling portion 7 following the horizontal return portion 6.
Patent JP-S61132495-A (JP)
Title: Moon pool closing apparatus
Inventor: MOCHIZUKI MINEO
IPC: B63B35/00
Filed: 1984-11-30
Abstract: PURPOSE:To improve propulsion efficiency by installing a horizontal roll wound with a canvas at the lower edge of one inner wall surface of a moon pool and freely laying the canvas towards the opposed inner wall surface and closing the moon pool during navigation. CONSTITUTION:A horizontal roll 31 which can be revolved normally and reversely is installed at the lower edge of one inner wall surface 21 of a moon pool 2, and a canvas 40 is wound. a write for pulling in the horizontal direction towards the opposed inner wall surface 22 is engaged with the outer side edge part of the wound canvas 40, and connected to a taking-up apparatus on a deck, and the canvas 40 can be laid towards the opposed inner wall surface. Therefore, during navigation, the moon pool 2 is closed, and the hull can be advanced with a small resistance, and the propulsion efficiency can be improved.
Patent JP-2000063373-A (JP)
Title: Production of 4-hydroxymethyl-gamma-butyro-lactone, intermediate useful for the production and production of the intermediate
Inventor: KITAYAMA KATSUHIKO
IPC: C07D307/33
Filed: 1998-08-21
Abstract: PROBLEM TO BE SOLVED: To obtain the subject 4-hydroxymethyl-γ-butyrolactone that is useful as a synthetic starting substance for a variety of nucleic acids advantageously in an industrial scale by oxidizing a specific diacyloxypentanal with a hypochlorite in the presence of an N-oxy radical and hydrolyzing the oxidation product. SOLUTION: (A) A 4,5-diacyloxypentanal of formula I (R is a saturated aliphatic hydrocarbon or an aromatic hydrocarbon) (for example, 4,5- diacetoxypentanal or the like) is oxidized with (C) a hypochlorite salt (for example, sodium hypochlorite) in the presence of an N-oxy radical (for example, 2,2,6,6,-tetra-methyl-1-piperidine-oxy or the like) to a compound of formula II, and the product is hydrolyzed to the objective 4-hydroxymethyl-γ- butyrolactone of formula III. In a preferred embodiment, the amount of the component C is 1-1.5 mole per mole of the component A. The amount of the component B is >=0.01 mol.%, preferably 0.1-2 mol.% based on the component A.
Patent JP-S60138915-A (JP)
Title: Furnace core tube of silicon carbide
Inventor: TANAKA TAKASHI
IPC: F27B9/30
Filed: 1983-12-26
Abstract: PURPOSE:To obtain a furnace core tube of silicon carbide to generate few particles at the furnace core tube of silicon carbide to perform heat treatment by inserting a semiconductor wafer inside of the furnace core tube by a method wherein roughness of the inside surface of the furnace core tube is made to the specified value or less. CONSTITUTION:After an SiC raw material treated with an acid (acid washing) is molded according to the rubber pressing method or the slip casting method, etc., purifying treatment is performed. After impregnated with Si for high pure semiconductor in succession, acid treatment is performed to obtain a furnace core tube of silicon carbide. When inside surface roughness measured by the probing method of the furnace core tube of silicon carbide obtained in such a way is 150mum or less, generation of particles is reduced. Moreover by making inside surface roughness of the furnace core tube to 150mum or less, no vibration is applied to wafers when a wafer boat is taken in and out from the furnace core tube using a draw bar, and generation of crystal defects (slip dislocations) in the wafers can be checked.
Patent JP-2001076616-A (JP)
Title: Shadow mask, shadow mask web, and manufacture of the shadow mask
Inventor: KOMATSU TAKAYASU
IPC: H01J29/07
Filed: 1999-09-06
Abstract: PROBLEM TO BE SOLVED: To provide a shadow mask, a shadow mask web, and a shadow mask manufacturing method without having possibility of removal of foreign matters in installing the shadow mask on a cathode-ray tube. SOLUTION: This shadow mask web 1 comprises a shadow mask 2, having an outer circumferential line 4 formed by etching, and an outer frame part 3 for holding the shadow mask 2 by plural connection parts 5. In this case, a half-etched breakage part is formed on the shadow mask side of the connection parts 5 and at an inner position of the outer circumferential line 4. In the shadow mask 2 obtained by removing the outer frame part 3 from the shadow mask web 1, the breakage part is formed recessed on the inner side of the outer circumferential line 4 of the obtained shadow mask 2. The shadow mask 2 can be manufactured easily by removing the outer frame part 3 of the shadow mask web 1 by folding, pulling, or tearing.
Patent JP-2000067082-A (JP)
Title: Information notice equipment and method therefor and machine-readable recording medium recorded with program
Inventor: NAKAZAWA SATOSHI
IPC: G06F17/30
Filed: 1998-08-21
Abstract: PROBLEM TO BE SOLVED: To obtain information related with an event or the like and the related information from among information opened to the public through a WWW or the like at the proper timing. SOLUTION: An information acquiring means 8 acquires information from the designated information acquiring destination, and an event information extracting part 9 extracts event and date information related with an event and a date from the information, and a related information retrieving device 12 retrieves a document preserving device 4, and retrieves the related information related with the event and date information. A notice information selecting part 17 reports notice information obtained by combining the event and date information with the related information to a user at the timing when the condition preliminarily decided by the user is fulfilled. The notice information whose condition is not instructed by the user is reported to the user according to the condition obtd. so as to match with a timing to report based on the related information in the notice information.
Patent JP-H0670925-A (JP)
Title: Scannogram image display method for image diagnostic device
Inventor: GOTO YOSHIHIRO
IPC: A61B6/03
Filed: 1992-08-28
Abstract: PURPOSE:To clearly discriminate the scan position line with a position measure number in a scannogram image display method for an image diagnostic device. CONSTITUTION:Concerning plural scan position lines 5 displayed together with a scannogram image 3 of a body to be tested on a screen of a display device 4, scan position lines 5a, 5b with a position measure number are displayed in a display mode different from that of the other scan position line. Thus, it is possible to clearly discriminate which are the scan position lines 5a, 5b with a position measure number.
Patent JP-2000062537-A (JP)
Title: Fixing structure of parcel board
Inventor: MURAKAMI HIROSHI
IPC: B60R5/04
Filed: 1998-08-21
Abstract: PROBLEM TO BE SOLVED: To perform taking-in and out a cargo even from the internal part of a car room. SOLUTION: A fixing part 18 fixed at a support rail 5 is arranged between a first and second boards of a parcel board body and a fixing mechanism 27 is provided to fix the parcel board 1 at a support rail 5. In the fixing mechanism 27, a locking piece 29 is arranged movably in the direction of the width of a car and a striker 31 at which the locking piece 29 is locked is protruded from the support rail 5. A bendable front hinge part formed that upper and lower non-woven fabrics 41 and 42 are sewn together is formed at a coupling part between a fixed part and the first board part. A bendable rear hinge part formed that the upper and lower non-woven fabrics 41 and 42 are formed between the fixed part and the second board part.
Patent JP-H0994632-A (JP)
Title: Aluminum alloy casting
Inventor: MORITA SHIGETAKA
IPC: B22D17/22
Filed: 1995-09-29
Abstract: PROBLEM TO BE SOLVED: To reduce the shrinkage hole and the outside shrinkage by specifying the proportion of a hole part vol. as cast in a boss part to the total vol. SOLUTION: An aluminum alloy is cast in the columnar boss shape by using a metallic mold 3 and a sand mold 5. The thickness (t) of a thin thickness part is made to e.g. 3mm. In this case, (a) and (b) represent the diameters, and in the case of using V1 for the whole boss vol. containing the hole part vol. as cast and V2 for the hole part vol. as cast, the (V2 /V1 ) is defined as a vol. ratio of the hole vol. as cast. Then, this vol. ratio of the hole part vol. as cast is made to 10-20%. By this method, this aluminum alloy casting can be produced into the high quality as automoble engine parts of a manifold and chain case, etc., needed to the air tightness and the strength.
Patent JP-S63107446-A (JP)
Title: Lamp device for bicycle
Inventor: AKAMATSU NORIO
IPC: H02K21/24
Filed: 1986-10-22
Abstract: PURPOSE:To simplify the structure and to produce a device inexpensively, by serving a wheel of a bicycle as a body of rotation of a magnet. CONSTITUTION:A lamp device for a bicycle is fixed to a magnet 1 secured to a rotating wheel and is also fixed to a frame close by without touching the rotating locus of this magnet 1. It is composed of a generator coil 2 which generates electricity by electromagnetic induction caused by flux variation in passing the magnet and of a luminant 3 with which the light is turned ON when connected to this coil 2. The magnet 1 is U-shaped as a whole and fixed to two spokes 5 of the wheel through a clamp 4. Since the magnet 1 is fixed to the wheel while the generator coil 2 to the frame in this way and no moving elements are there, the structure is so simplified that mass production is possible inexpensively.
Patent JP-S59130253-A (JP)
Title: Novel glutamic acid derivative
Inventor: HASHIMOTO SHINJI
IPC: C07C237/08
Filed: 1983-12-26
Abstract: NEW MATERIAL:A compound of formula I [R<1> is aralkyl; R<2> is H, aroyl; R3 is hydroxyl, anilino which may be substituted with hydroxyl, lower-alkylamino which may be substituted with carboxy and hydroxyphenyl where when R<2> is H, R<3> is not hydroxyl] and its salt. EXAMPLE:N-(N-Benzyl-gamma-L-glutamyl)-L-tyrosine. USE:It is immunosuppresive, thus inhibits the production of antibodies such as immunoglobulin E or immunoglobulin G, and is used in treatment for autoimmune and allergic diseases. PREPARATION:The reaction between a compound of formula II (Ra<3> is R<3> except hydroxyl) or its salt and a compound of formula III (R<4> is aryl; n is 0-6) gives a compound of formula IV, which is reduced, e.g., by catalytic hydrogenation to give the compound of formula I a, namely R<3> is not hydroxyl in formula I .
Patent JP-H03113177-A (JP)
Title: Sealing device for needle valve
Inventor: MORITA NOBUYOSHI
IPC: F16J15/10
Filed: 1989-09-28
Abstract: PURPOSE:To prevent the leak due to the sliding of a needle valve and permit the semipermanant use by setting the gap between the needle and a needle guide which are made of ceramics to a specific value or less, allowing the needle guide to be shifted in the radial direction and installing a packing for suppressing the shift in the radial direction on the side surface or an outside circumferential part. CONSTITUTION:A needle 1 and a needle guide 2 are made of ceramic material, and the gap is set to 10 mum or less, and the needle guide 2 can be shifted in the radial direction, and each O-ring 5 is arranged on the both sides of the needle guide 2, and formed integrally by packing pressings 3 and 6. Accordingly, the leak from the outer periphery of the needle 1 is prevented by the inside diameter of the needle guide 2, and the leak from the outer periphery of the needle guide 2 is prevented by the O-ring 5. Accordingly, the need of the contact of the O-ring 5 with the inside diameter of the needle 1 is obviated, and the influence of the shift of the needle 1 for abrasion is eliminated.