baber/WOPTO huggingface dataset:
Patent JP-H11266204-A (JP)
Title: Optical receiver, wavelength multiple optical receiver, time division multiple optical receiver and optical transmission system using them
Inventor: KENJO SATOSHI
IPC: H04B10/524
Filed: 1998-03-17
Abstract: PROBLEM TO BE SOLVED: To improve signal light-to-noise ratio by providing a light source that generates offset light, an optical coupler which combines signal light and the offset light and a saturable absorption type optical element which inputs an optical coupler output and outputs it to a transmission line. SOLUTION: Signal light 11 transmitted from a transmission circuit 2 is transmitted to a transmission line 2 via a saturable absorption type optical element 3, which suppresses the light noise of the light 11. The element 3 has a saturable absorption effect due to the reverse bias voltage application to a semiconductor waveguide and has a nonlinear type transmitted characteristic depending on the input light intensity. Although a data pulse having large light intensity exceeds the absorption capability of the optical element and is transmitted, a noise component having small light intensity receives strong absorption and is reduced. A pulse waveform which includes the noise component and has a peak value that exceeds the threshold levels of the transmitted characteristic and the absorption characteristic can be made to a pulse waveform that reduces the noise component.
Patent JP-S55160297-A (JP)
Title: Heat exchanger
Inventor: NAKAMURA MITSUO
IPC: F28F3/08
Filed: 1979-06-01
Abstract: PURPOSE: To simplify a structure of a heat exchanger by providing by a parallel air passage formed by partitioning boards, an opening provided in a position which is not adjoining the parallel air passage, and a partitioning projection which has a groove on the back side and installed in such a position that the stacked partitioning boards do not overlap one another.  
     CONSTITUTION: An air flow A having been induced from an opening 7d to an air passage X partitioned by partitioning boards 7 and 8 and also by partitioning projections 7a and 7b, is discharged from an opening 7c to outside of the unit. While a part of the air flow A goes into a groove on the back side of a partitioning projection 8d in the neighborhood of the opening 7d because an L-shape partitioning projection 8a of the partitioning board 8 is at the inside of the air passage X, and since it joins the air flow A in the neighborhood of the opening 7c, it can be prevented from being discharged to the outside. Similarly, an air flow B is made to move from the opening 8d into an air passage Y partitioned by the partitioning board 7 and the partitioning projections 8a and 8b stacked on the partitioning board 8, and it is made to flow in such a manner as to face toward the air passage X and forced to be discharged from the unit through the opening 8c. By using this mechanism, heat exchanging can be achieved with a simple structure. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-H08260995-A (JP)
Title: Turbo compound engine
Inventor: KAWATANI SEI
IPC: F02B41/10
Filed: 1995-03-27
Abstract: PURPOSE: To provide a turbo compound engine, in which responsiveness at the time of re-acceleration after transmission shift operation can be improved. CONSTITUTION: A turbo compound engine comprises an exhaust turbo supercharger 3 having a compressor 3b interposed in an intake system 5 of an engine 1 and a turbine 3b which is interposed in an exhaust system 2 and connected to the compressor, an exhaust heat recovery turbine 6 interposed in the exhaust system downstream from the turbine, and a speed reduction gear train 7 which connects a rotating shaft of the turbine to a countershaft 16 of a transmission of the engine, and decelerates the rotation of the exhaust heat recovery turbine to be transmitted to the countershaft 16. The speed reduction gear train comprises a one-way clutch 9 for permitting only the transmission of power from the rotating shaft side to the countershaft 16, and a centrifugal clutch 17 for intercepting power transmission when the rotating speed of the countershaft 16 is below a preset value.
Patent JP-H09252921-A (JP)
Title: Body structure of letter box
Inventor: SUEOKA TETSUO
IPC: A47G29/12
Filed: 1996-03-25
Abstract: PROBLEM TO BE SOLVED: To give a soft image to a letter box improved in the working productivity. SOLUTION: A tubular body 10 is formed of a body 1 and bottom plate 2, and a rear plate 3 is attached to a rear opening part to provide the body structure of a box-shaped letter box. Corner parts 11 of the tubular body are bent roundly. The body 1 and the bottom plate 2 are connected to each other by seam working and the rear plate 3 connected on the end edges to the body 1 and bottom plate 2 by curling working of on insert B.
Patent JP-H10180481-A (JP)
Title: Lead-free solder having oxidation-resistant characteristic
Inventor: WAIDE NOBORU
IPC: H05K3/34
Filed: 1997-03-21
Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of defective soldering and to improve the efficiency of soldering work by adding the prescribed quantity of Ge and Te in a composite manner into the Sn-based lead-free solder thereby improving the oxidation preventive effect of the solder and the duration of oxidation prevention. SOLUTION: Ge and Te are added into the Sn-based lead-free solder or the Sn-Ag based lead-free solder in a composite manner. The oxidation-resistant characteristic of the Sn-based lead-free solder is remarkably improved, and durability of the oxidation preventive time is improved. Addition of Ge is preferably 0.01-0.1wt.%, and when addition is smaller than this lower limit, the oxidation-resistant effect is not fully demonstrated. When addition exceeds the upper limit, there presents a problem in economy because Ge is expensive. Te is added in order to improve durability of the oxidation preventive time, and addition is preferably 0.01-0.1%. When addition is smaller than this lower limit, the effect of addition is not fully demonstrated. Even when addition exceeds the upper limit, it is not so effective.  In addition, other elements having the oxide generation suppressive effect such as Ga, Ag, S and Sb can be added in addition to Ge and Te.
Patent JP-H01240804-A (JP)
Title: Measuring method for shape of transparent body
Inventor: YAMANE MOTOHIRO
IPC: G01B11/24
Filed: 1988-03-22
Abstract: PURPOSE:To precisely determine the internal and external shapes of a transparent body, by measuring the external and internal shapes of the transparent body on the basis of the peak of a deflection angle of a light beam which is transmitted through the boundary part of water for adjustment of a refractive index and an axial core part and through the boundary part of the axial core part and a sheath part. CONSTITUTION:An irradiation light beam emitted from a laser light source 12 of a light irradiation system 11 is direct through a condenser lens 13 to a transparent body 51 in water 44 for adjustment of a refractive index. This light beam is deflected by a change in the refractive index inside the transparent body 51, and the light beam transmitted therethrough drops a spot light on a detector 23 through a condenser lens 22. An output signal being proportional to the position of incidence of this spot light is inputted from the detector 23 to a scanning device 31 through a signal processor 24, a computer 25 and a controller 26. A prescribed operation signal is inputted to a motor 34 so as to move a mounting surface 32 of a moving stage 33 in the direction of a Z-axis. Thus, the transparent body 51 is scanned in the direction of the Z-axis. Thereby the shape of the transparent body can be measured precisely by an optical non-destructive measuring means.
Patent JP-2000254452-A (JP)
Title: Air purifier
Inventor: MIYATA AKIO
IPC: A61L9/16
Filed: 1999-03-15
Abstract: PROBLEM TO BE SOLVED: To remove the odor of a filter and also to collect dust by installing a blast fan, a particle removing filter, a light transmissive filter, in which an adsorbent and a photocatalyst are exist, and a light source exciting the photocatalyst, and arranging a light reflective plate at both sides of an air passing surface of the light transmissive filter. SOLUTION: Air is taken in from an air intake 7 by the blast fan 5, and the dust is sufficiently removed by a prefilter 8 and a high efficiency particles removing filter 6, then the air is guided to a honeycomb filter 2. Zeolite and titanium oxide are deposited on the honeycomb filter 2, odor components are decomposed oxidatively while being adsorbed. At this time, since the both sides of the titanium oxide are excited with near ultraviolet rays emitted by the light source 4 and subjected to multi-reflection by two sheets of reflective plates 3, the odor components are oxidatively decomposed uniformly over the entire area of the honeycomb filter 2 and the odor components are completely removed. The air purified in this way is discharged from an air blow-off port.
Patent JP-H04280629-A (JP)
Title: Manufacturing method of film stepwise structure and semiconductor device using the same
Inventor: OKADA MAKOTO
IPC: H01L29/80
Filed: 1991-03-08
Abstract: PURPOSE:To provide the title fine stepwise structure having the fine no- meandering stepped parts in precise width as well as the semiconductor devices having high speed characteristics in relation to the title manufacturing method of even and fine stepwise structure and the semiconductor devices using said structure manufactured by said manufacturing method. CONSTITUTION:The title manufacturing method is composed of the three steps as follows, i.e., the first step wherein a super lattice structure is formed by alternately depositing the crystal layers 3 comprising the first material as well as the other crystal layers 4 comprising the second material; the second step wherein the plane making an oblique angle with the planes of these crystal layers 3, 4 is formed by performing the anisotropical etching step to the crystalline direction of said super lattice structure and the third step wherein the crystal layers 3 comprising the first material or the crystal layers 4 comprising the second material are selectively removed by performing the isotropical etching step depending upon the materials of said oblique plane.
Patent JP-H03268251-A (JP)
Title: Optical disk
Inventor: WADOKORO JUNICHI
IPC: G11B7/24015
Filed: 1990-03-16
Abstract: PURPOSE:To obtain a light-weight optical disk by using glass substrates of <=0.5mm thickness and sticking two glass substrates having recording layers with spacers interposed. CONSTITUTION:On the one side of each glass substrates 1, 6, <=0.5mm in thickness, there are provided tracking guide grooves 2, 7 and recording layer 3, 8 each comprising a reflecting film, magnetic film, and protective film. Spacers 5a, 5b, are provided between the two substrates 1, 6 on the inner and outer circumferences and adhered with adhesive 4a, 4b to recording layers 3, 8. In this constitution, total thickness of the obtd. disk is almost same as that of a conventional optical disk, while weight is 1/2 or less of the conventional one.
Patent JP-H01239683-A (JP)
Title: Method for describing line segment
Inventor: YAMAGISHI KENTARO
IPC: G06T7/60
Filed: 1988-03-22
Abstract: PURPOSE:To detect a line segment with sufficiently high accuracy without necessitating the decision of an angle or a circular arc directly by approximating plural sequence of points including a remarking point to a straight line, and extracting the set of the point having a common attribute. CONSTITUTION:A start point and an end point represented by the connection of two-dimensional points are set. The points between them are remarked, and a parameter to approximate n+1 sequence of points to the straight line from the two-dimensional arrangement of the point and the points of (n) arbitrary natural numbers connected to the point is found, and it is set as the feature parameter of the remarking point. After the feature parameters of all of the points between the start point and the end point are clustered, clusters having size over prescribed size are selected, and the sequence of points consisting of the two-dimensional connection of the points having the feature parameter at every cluster is set and detected as an effective component. In such a way, it is possible to eliminate the influence of a singular point due to a noise or quantization, and to heighten accuracy.
Patent JP-H02246244-A (JP)
Title: Manufacture of semiconductor device
Inventor: UOOCHI YASUO
IPC: H01L21/768
Filed: 1989-03-20
Abstract: PURPOSE:To strengthen the quality of a film so as not to yield degassing and the like by repeating a heat treatment step after the application of an insulating film by a plurality of times, and making the thickness of the film thick without forming cracks. CONSTITUTION:A wiring layer 4 comprising, e.g. polysilicon, is provided on a semiconductor substrate 2. An application film is applied on the surface on which a relatively small step is formed one time by a spin-on method. After prebaking, heat treatment is performed for one minute by lamp annealing. Thus an applied film 6 is formed. Then said application step and the heat treatment step are repeated by, e.g. seven times, and an applied film 8 is formed. Then, the steps formed on the semiconductor substrate 2 with the wiring layer 4 are completely embedded. In this way, the film can be made thick without forming cracks, and the film quality can be strengthened so as not to yield degassing and the like.
Patent JP-H09259900-A (JP)
Title: Phosphoric acid fuel cell
Inventor: NAKAJIMA KAZUYOSHI
IPC: H01M8/02
Filed: 1996-03-25
Abstract: PROBLEM TO BE SOLVED: To grasp the phosphoric acid quantity left in a fuel cell body and calculate the remaining life of the battery body by providing a specified means in a phosphoric fuel cell having a prescribed structure. SOLUTION: In this phosphoric acid fuel cell, a fuel electrode and an oxidizing agent electrode arranged with a matrix layer for holding phosphoric acid between passages of fuel gas A and oxidizing gas B are provided on the back surfaces of both the electrodes, whereby a unit cell is formed. A plurality of such unit cells are laminated, and a cooling plate is inserted every prescribed number of unit cells to form a cell body. A manifold 4 for supplying and discharging A and B to the fuel electrode and the oxidizing agent electrode is arranged on the side surface of the cell body, the manifold 4 has a feed gas pipe and exhaust gas pipe 9 for supplying and discharging A and B, and the manifold 4 and the cell body are sealed. In this fuel cell, the gas outlet side end part of the unit cell has a temperature measuring means 8 for measuring the temperature of this part. Namely, the higher the temperature is, the larger the phosphoric acid scattering quantity is, and the residual phosphoric acid quantity can be thus grasped.
Patent JP-S63234576-A (JP)
Title: Piezoelectric composite material
Inventor: MIYAGAWA HIROSHI
IPC: H01L41/18
Filed: 1987-03-24
Abstract: PURPOSE:To increase a composite piezoelectric constant and heat resistance, to give shock resistance, to thin a film and to augment an area by mixing a specific quantity of power dielectric ceramics with a polymeric piezoelectric material. CONSTITUTION:60-70 wt.% power dielectric ceramics are blended to a polymeric piezoelectric material. With the piezoelectric composite material, a composite piezoelectric constand d31 displays a maximal value when the relative permittivity of ceramics extends over approximately 1000 when the value of a permittivity is fixed at epsilonr=11 and volume contents are brought to 67%, and d31 at that time is brought close to 30X10<-12>C/N. A Curie temperature extends over approximately 300 deg.C, and the piezoelectric constant of the composite material is determined by the characteristics of ceramics, thus holding the piezoelectric constant up to a temperature near the melting point of polymer.
Patent JP-S59194493-A (JP)
Inventor: YASUDA SHIGERU
IPC: H01G4/12
Filed: 1983-04-18
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-S54160067-A (JP)
Title: Reaction column for heat treatment of sludge
Inventor: MIWA TSUTOMU
IPC: F23G7/00
Filed: 1978-06-05
Abstract: PURPOSE: To improve the gas/liquid contact efficiency by means of a nozzle for injecting a mixture of heated sludge and compressed air to the bottom provided at the lower portion of a reaction column and a dispersion plate as opposed thereto, with an air injector attached to specify the flow speed from the nozzle.  
     CONSTITUTION: A heated sludge and a compressed air are respectively introduced into a mixing cylinder 4 through ducts 2 and 3 of a reaction column having porous plates 11. Then, a mixture of the heated sludge and the compressed air is injected into a liquid from an injection nozzle at the tip of the cylinder 4, once hitting against a dispersion plate 7 at a rate of more than 4 m/sec., preferably 5 to 10 m/sec. Impinging energy on the dispersion plate allows the formation of fine air bubbles and uniform dispersion simultaneously. The air containing fine bubbles ascends in the sludge liquid subjected to an oxidization in contact with the sludge and then, discharged through an outlet 10. On the other hand, the sludge treated is withdrawn from the upper portion of a tube 9 and moved to the subsequent process. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-H06283331-A (JP)
Title: Magnetic thin film and its manufacture
Inventor: FURUKAWA SHINJI
IPC: H01F41/18
Filed: 1993-03-26
Abstract: PURPOSE:To improve the electric resistivity, saturation magnetization, and soft magnetic characteristics of a magnetic thin film which is composed of Fe, B, and N and in which ceramics composed mainly of BN are scattered and to reduce the magnetostriction of the thin film by forming the thin film mainly of bcc-Fe and BN. CONSTITUTION:An amorphous alloy thin film in which BN is scattered around Fe-group amorphous clusters is manufactured as a precursor body. Whether or not an amorphous film is formed is checked from the B concentration in the film. To be concrete, when the B concentration falls within the range of 15-30at.%, it is confirmed that the amorphous film is formed. By heat-treating the amorphous film at a temperature higher than the crystallizing temperature, a single bcc-Fe phase is obtained from the Fe-group amorphous clusters. A bcc-Fe phase containing no Fe3B after crystallization is obtained in a quaternary alloy containing D in addition to Fe, B, and N in the same way as that used for the ternary alloy containing Fe, B, and N.
Patent JP-H02247877-A (JP)
Title: Head positioning device
Inventor: MASAKI KIYOSHI
IPC: G11B21/02
Filed: 1989-03-20
Abstract: PURPOSE:To make the subject device small in size and light in weight with high rigidity and to enable its positioning with high accuracy even if an external vibration, etc., are received by using constitutive members made of metal and also made of resin for constituting a head carriage and minimizing a metal part in size so far as maintaining enough rigidity. CONSTITUTION:The member 15 made of metal, such as aluminum, etc., in the head carriage 23 is fitted to a movable part of a direct-acting bearing 10 made of hardened stainless steel, and is supported with extremely large rigidity except in the driving direction. Since aluminum is also about ten times as high as resin in rigidity, disturbance inhibitory rate for showing a degree of inhibition from an action of external force can be enlarged. The part not required for rigidity is of a resin member 16, and a positioning error of a magnetic head 22 due to a temp. change is diminished by altering the filling amt. of glass fibers. By this method, the head positioning device having a small size and light weight capable of positioning with high accuracy can be achieved.
Patent JP-S62226625-A (JP)
Title: Forming method for fine pattern
Inventor: UCHIUMI YUICHI
IPC: H01L21/027
Filed: 1986-03-28
Abstract: PURPOSE:To obtain a fine resist pattern of high dimensional accuracy, by reflecting an X ray so as to have a specified incidence and reflection angles with a reflection mirror wherein a heavy element thin film and a light element thin film are alternately laminated with respective specified thickness on a specified substrate. CONSTITUTION:Periodic unit multilayers 9 wherein W thin film 7 of thickness An and Be thin film 8 of thickness Bn are piled by Nn layers with a pitch dn are laminated by M layers in order from a substrate 10. A reflection mirror wherein unit multilayer films of different pitch are laminated exhibits a spectrum possessing a high integration reflectiuity in a wide wavelength range wherein peaks having a peak at a different center wavelength corresponding to each unit multilayer are synthesized. The desired wavelength bandwidth can be set by selecting dn, An, Bn and M as variables. The incidence and reflection angle alpha of a reflection mirror 1 is determined based on the center wavelenth lambda c of a reflection spectrum, the pitchers d1, d2..., and the number of lamination layers M. The reflected ray 6 with a specified bandwidth is applied on a resist 3 through an X-ray mask 2, and an interference image is formed on the resist. The fine pattern of superior dimentional accuracy can be rapidly formed, thereby.
Patent JP-2000264161-A (JP)
Title: Air bag disposal method and device
Inventor: NAKAGAWA TOSHIO
IPC: B60R21/26
Filed: 1999-03-15
Abstract: PROBLEM TO BE SOLVED: To provide an air bag disposal method excellent in disposal workability, a soundproof property, a windbreak property and gas non- permeability. SOLUTION: In this air bag disposal method for disposing an unnecessary air bag device by operating an inflator 52 of the air bag device, the inflator 52 is operated within an airtight space 11 surrounded by a soundproof wall. The inflator 52 is operated by plasma thermal spraying or glow plug heating, or with a rotatable current carrying head.
Patent JP-H04306569-A (JP)
Title: Distributed type regenerable power generation system
Inventor: OHASHI FUMIO
IPC: C10L3/06
Filed: 1991-04-02
Abstract: PURPOSE:To provide a convenient distributed type regenerable power generation system having high performance by carrying out heat treatment on methane gas obtained in a fermenter by means of the sunlight so as to generate hydrogen as fuel for a fuel cell. CONSTITUTION:The sunlight condensed by means of a heliostat 1 is introduced into a high temperature tank 3 through an optical fiber 2. Methane (CH4) gas obtained by heating carbonaceous acid in a fermenter is introduced into the tank 3. The methane gas is decomposed into carbon monoxide, water and hydrogen in the tank 3 keeping much higher temperature steam than a gas holder by means of the sunlight. A fuel cell 5 generates electromotive force by using hydrogen gas (H2) produced in the tank 3 as fuel. Electric power from the fuel cell 5 is connected electrically in parallel to electric power from a solar battery 6 so as to be introduced into loads 8a-8d.
Patent JP-H07278895-A (JP)
Title: Plating device and plating method
Inventor: YAMAMOTO MIKA
IPC: C25D17/16
Filed: 1994-04-06
Abstract: PURPOSE:To provide a plating device capable of surely, stably and rapidly forming a plated layer having a desired thickness on a material to be plated. CONSTITUTION:This plating device is used for forming a plated layer on an external electrode of a laminated condenser 20 while transporting the laminated condenser 20 as a material to be plated on an endless belt 27 of a transporting device 24 arranged in a plating vessel 21, in which a plating solution 22 is stored, and a plating solution jetting hole 31 and a plating solution sucking hole 32 are arranged along the transporting direction. As a result, a fresh plating solution is efficiently supplied to the vicinity of the material to be plated.