baber/WOPTO huggingface dataset:
Patent JP-2000244072-A (JP)
Title: Nitride semiconductor element
Inventor: TANIZAWA KOJI
IPC: H01S5/343
Filed: 1999-04-20
Abstract: PROBLEM TO BE SOLVED: To improve light-emitting output further which makes expansion of scope of application to various applied products possible using an active layer of a multiple quantum well structure, and to provide a nitride semiconductor light-emitting element whose dielectric breakdown voltage is improved. SOLUTION: An n-side first multi-layer film layer 5 that is constituted by laminating at least two kinds of nitride semiconductor layers to which at least n-type impurities are doped in concentrations different from each other and whose band gap energies are different from each other, or to which at least n-type impurities are doped in concentrations different from each other and which have the same composition, an active layer 7 of a multiple quantum well structure comprising InaGa1-aN (0<=a<1), a p-side multi-layer film clad layer 8 that is constituted by laminating third and fourth nitride semiconductor layers whose band gap energies are different from each other and p-type impurity concentrations are different from each other, or a p-side single film clad layer 8 composed of AlbGa1-bN (0<=b<=1) comprising p-type impurity.
Patent JP-S593413-A (JP)
Title: Optical distributor
Inventor: KOSEKI TAKESHI
IPC: G02B6/34
Filed: 1982-06-30
Abstract: PURPOSE:To prevent the leakage of an optical signal owing to diffracted light by providing the boundary of plural reflection faces in parallel to the direction connecting the positions of an input fiber and an output fiber. CONSTITUTION:An optical fiber array 1 bundled with plural optical fibers constituting input and output ports in parallel in one direction is optically connected to the one end face of a rod lens 2 at 1/4 pitch, and two sheets of light transmittable optical fobides 4a, 4b having inclined faces of angles alpha, pi-alpha in the arranging direction of the input and output ports are butted to the center of the other end face of the lens 2 with the arranging direction of the input and output ports as a boundary line. Reflection faces 5a, 5b are formed on the inclined faces of the respective bodides 4a, 4b. The incident light from the input port is subjected to wavefront division at said boundary line and is dividedly reflected in different directions. The diffracted light generated at the boundary of the faces 5a, 5b having different angles advances in the direction at a right angle to the above-mentioned boundary line.
Patent JP-H0410537-A (JP)
Title: Manufacture of semiconductor device
Inventor: YAMAMOTO TOMIE
IPC: H01L21/30
Filed: 1990-04-27
Abstract: PURPOSE:To make it possible to prevent a cutaway of a P-type resist and the generation of an excessive side etching in a polyimide film at the time of simultaneous developing of the positive resist and the polyimide film by a method wherein the resist film is provided on the polyimide film in a thickness not smaller than that of the polyimide film. CONSTITUTION:An SP710 (a registered trademark) film is applied on a plasma SiO2 film 11 as a polyimide film 12 in a film thickness of 2.3mum. This film 12 is subjected to baking and thereafter, an OFPR-800 (a registered trademark) film is applied on the film 12 as a novolak-system positive resist 13 in a film thickness of 2.3mum. Then, an exposure is performed using a mask having a prescribed pattern and thereafter, a developing of the resist 13 and an etching of the film 12 are continuously performed using an alkali developing solution and a pattern is formed. Lastly, the resist 13 is selectively removed using an organic solvent and thereafter, the film 12 is cured and a polyimide passivation film having an opening part 14 is completed. By forming the resist film 13 in a thickness not smaller than that of the film 12, the badness of a processed form, which accompanies a cutaway of the resist 13, and a reduction in the resist film can be suppressed.
Patent JP-H07315299-A (JP)
Title: Resource feeder for space shuttle
Inventor: HASHIMOTO YOSHIHIRO
IPC: F02K9/50
Filed: 1994-05-27
Abstract: PURPOSE:To simplify a system by arranging tanks for propellant and coolant, a boost gas tank, and a piping system for them as a common resource. feeder so as to feed propellant, coolant, and boost gas required for a propulsion system, a power system, and a thermal control system. CONSTITUTION:In a boost gas tank 1, helium gas or nitrogen gas is filled, and boost gas is parallelly fed to a NTO tank 2 and a MMH tank 3 for propellant and a H.0 tank 4 for coolant via latch valves 6 and pressure regulating valves 7. In each tank, a check valve 8 and the latch valve 6 are arranged on the inlet side, while a filter 9 is arranged on the outlet side. Fill/drain valves 5 are arranged on the outlet side and the inlet side in respective tanks so as to be connected to other pipes. The NTO, MMH tanks 2, 3 are connected to thrusters 12 in the backs A, B of a power system and a propulsion system. The H2O tank 4 is connected to an electronic equipment cooling device 22 consisting of a cold plate 22a and a heat sink 22b so as to feed cooling water, and further, feeds the cooling water to a heat exchanger in the power system (APU system).
Patent JP-2000299783-A (JP)
Title: Image processing method and device
Inventor: MATSUOKA TERUHIKO
IPC: H04N1/405
Filed: 1999-04-21
Abstract: PROBLEM TO BE SOLVED: To convert an input image with M gradations to a high quality output image with N (N<M) of gradations by optimizing a layout state of matrix coefficients in a dither matrix used for multi-value dither processing in response to a gradation value of each of pixel data of an input image. SOLUTION: Seven matrices A-G configuring octal dither matrices used for multi-value dither processing that converts input image data with 256 gradations into output image data with 8 gradations are classified into the matrices A-C with a lower gradation range, matrices D, E with a medium gradation range, and matrices F, G with a higher gradation range. Matrix coefficients are arranged in the matrices A-C with a lower gradation range and the matrices F, G with a higher gradation range by placing priority on a direction of the gradation values and matrix coefficients are arranged in the matrices D, E with a medium gradation range by placing priority on directions of X, Y. The gradation performance of pixel data with low and high gradations is enhanced and the resolution of pixel data with medium gradation is improved.
Patent JP-S5337992-A (JP)
Title: Sintered diamond
Inventor: HARA AKIO
IPC: C01B31/06
Filed: 1976-09-20
Abstract: PURPOSE: To improve heat resisting performance of sintered diamond without adversely affecting its wear resisting performance, by the use of copper alloy containing Fe, Co, Ni, Cr and Mn as binder metals for binding diamond particles with each other. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-H09297994-A (JP)
Title: Semiconductor memory
Inventor: NAKASE YASUNOBU
IPC: G11C11/412
Filed: 1996-05-08
Abstract: PROBLEM TO BE SOLVED: To provide a semiconductor memory of two-port configuration reduced in circuit area. SOLUTION: When a port exchange signal PSEL is L level, a crossbar switch CBS (i) (i=0-5) outputs a control signal for zero port PORT 0 from an output section CS i0 while outputting a control signal for a firs port PORT 1 from an output section CS i1. When the port exchange signal PSEL is H level, the crossbar switch CBS (i) outputs a control signal for zero port PORT 0 from an output section CS i1 while outputting a control signal for a first port PORT 1 from an output section CS i0. Thus, port switching operation is performed.
Patent JP-H09297950-A (JP)
Title: Moving piece guiding device
Inventor: OZAWA MASANORI
IPC: G11B15/665
Filed: 1996-05-08
Abstract: PROBLEM TO BE SOLVED: To economically retain accuracy while using a thin plate with a simple constitution by forming a guide rail while providing an oblong hole shaped notch in a main base and bending the bottom side of the main base to reinforce the circumference of the rail. SOLUTION: An oblong hole shaped notch reaching from an insertion port 11a1 to the tip end of a rotary head drum side is provided in a guide rail 11a. Moreover, one pair of bent pieces 31 is formed by bending the bottom side of a main base 11. As a result, the circumference of the the guide rail 11a is reinforced structurally and the guide rail 11a and the neiborhood of a hole 11c in which a rotary head drum is to be installed are made to be rigid structure and the generating of vibration is suppressed with respect to a guide slider. Moreover, since this device is a simple structure in which edge parts of the guide rail 11a are merely bent, it is unnecessitated to use a reinforcing member separately and the thinning of of the main base plate 11 is not impaired.  Thus, the intensity of the main base is enhanced by using the thin plate with a simple constitution in this way and also accuracy is retained economically.
Patent JP-S5637685-A (JP)
Title: Manufacture of light emission diode
Inventor: YAMAGUCHI TAKAO
IPC: H01L21/208
Filed: 1979-09-04
Abstract: PURPOSE:To obtain a sufficient and low density N type layer in a light emission diode without inverting to P type by forming an N type epitaxial layer using a growing solution added with doner impurity reducing segregation as becoming lower temperature. CONSTITUTION:S and Sn are added to growing solution, and an N type layer 2 is epitaxially grown in liquid phase on an N type GaP substrate 1. Sn is so-called double polarity impurity for GaP crystal, but becomes P type at 1,000-900 deg.C mostly, and forms N type GaP as a whole. The lower the temperature becomes, the lower the segregation coefficiency of the Sn is contrary to the S. When the Sn is added thus into the growing solution, the P type inversion at the initial time of growing can be suppressed, and an N type layer having considerably low carrier density can be obtained ven in the vicinity of the junction. Other doner impurity for reducing the segregation coefficient instead of the Sn similarly as the temperature becomes lower may be employed. Thus, a diode having a preferable light emission efficiency can be manufactured.
Patent JP-S5447666-A (JP)
Title: Production of parent material for optical fibers
Inventor: SHIBUYA SEIJI
IPC: G02B6/00
Filed: 1977-09-21
Abstract: PURPOSE:To enable core rod to be readily removed without impairing the quality of the resultant fabricated product by cylindrically depositing sooted matter composed of glass raw materials on the outside circumference of the core rod and heating  the core rod to allow the sooted matter to sinter and shrink. CONSTITUTION:Glass raw material powder is deposited in a sooted state by a CVD method on the outside circumference of a ocre rod 1 composed of thermally and chemically stable graphite. The core rod 1 is electro-heated by a power source 2 and the deposit 4 is heat treated from its inside circumference side to the outside circumference side. The deposit 4 becomes gradually sintered and causes volume reduc tion, thus its inside circumference shrinks in an expanding direction, whereby a minute free spacig is formed between the core rod 1 and the sintered deposit 4. When the free spacing is formed in this way, the core rod 1 is pulled off from the deposit 4.
Patent JP-H08288819-A (JP)
Title: Photoelectric sensor
Inventor: IMAI SEIJI
IPC: H03K17/78
Filed: 1995-04-14
Abstract: PURPOSE: To easily adjust the sensitivity of a photoelectric sensor without using such a switch circuit that switches the projection current and the amplification degree by using a means that changes the time width when the coincidence is secured between the projection and light receiving signals and can adjust the sensitivity of the photoelectric sensor. CONSTITUTION: A microcomputer 1 consists of a CPU, a memory which stores the programs and data, and an input/output interface. The projection signal of the microcomputer 1 is supplied to a projection circuit 2. Then a projection element 3 is driven by the circuit 2 to emit light on an object detection area, and a light receiving element 4 outputs the output of a light receiving circuit 5 via a synchronous circuit 6. An object is decided on the level of the output that passes through the circuit 6. Furthermore, a sensitivity input part 9 is connected to the microcomputer 1 to input the sensitivity of the photoelectric sensor. Then the time width when the coincidence is secured between the projection and synchronizing signals is varied based on the input signal supplied from the part 9. Thus, the sensitivity of the photoelectric sensor can be adjusted.
Patent JP-S61275272-A (JP)
Title: Production of gamma-butyrolactone derivative
Inventor: HIRAMA MASAHIRO
IPC: C07D307/32
Filed: 1985-05-29
Abstract: PURPOSE:To advantageously produce the titled compound useful as a raw material for medicines, by subjecting a readily available carbamate, particularly an optically active carbamate to the intermolecular Michael addition reaction to introduce stereoselectively amino group thereinto and hydrolyzing or further acylating the resultant compound. CONSTITUTION:A carbamate expressed by formula I (A is protecting group of OH; R<1> and R<2> are lower alkyl), e.g. an optically active carbamate, is treated with a base, e.g. sodium hydride or tert-butoxypotassium, and cyclized, i.e. subjected to the Michael addition reaction, to give a perhydro-1,3-oxazin-2-one expressed by formula III, which is then hydrolyzed or further acylated to afford the aimed gamma-butyrolactone derivative expressed by formula IV (R is H or acyl), e.g. a compound expressed by formula V. Daunosamine and derivatives thereof can be advantageously produced by the above-mentioned method.
Patent JP-H01287260-A (JP)
Title: Manufacture of hot dip galvanized sheet steel
Inventor: IKEDA SATOSHI
IPC: C23C2/02
Filed: 1988-05-11
Abstract: PURPOSE:To improve the adhesive property of a galvanized film at the time of subjecting the surface of a sheet steel to hot dip galvanizing by preliminarily plating Mn onto the surface of the sheet steel and thereafter subjecting it to hot dip galvanizing. CONSTITUTION:At the time of manufacturing a hot dip galvanized sheet steel, the surface of the sheet steel is purified by degreasing, is thereafter plated with 0.1g/m<2> Mn by an electroplating method, is thereafter heated and annealed in a reductive atmosphere at need, is successively immersed into a hot dip Zn bath and is subjected to hot dip galvanizing; it is furthermore charged to an alloying furnace, is heated to 550-600 deg.C to alloy a galvanized layer. Even in a sheet steel contg. the elements easy to oxidize such as Si, Al, Cr, Ti and P, since an intermediate layer of Mn is interposed between the oxide film thereof on the surface and a galvanized layer, the lowering of the adhesion in the galvanized layer caused by the oxide of the above elements is prevented, by which a hot dip galvanized layer having excellent adhesion can be formed.
Patent JP-H06306649-A (JP)
Title: Pigment for preventive filiform corrosion
Inventor: OKUDA MASAAKI
IPC: C23F11/00
Filed: 1993-04-16
Abstract: PURPOSE:To produce a pigment for preventing a filiform corrosion having excellent rustproof property for the filiform corrosion of an aluminum-based material particularly without any environmental pollution by mixing phosphate, zinc oxide and calcium molybdate at specified mixing ratios. CONSTITUTION:The pigment for preventing the filiform corrosion is produced by mixing each component of the phosphate, the zinc oxide and the calcium molybdate at the mixing ratio of (10-60):(5-35):(20-80) by weight. Aluminum tripolyphosphate, ortho-aluminum phosphate, laminar titan phosphate, etc., are preferably used as the phosphate. The mixing of a starting material may be either of dry mixing and wet mixing, the temp. at the time of wet reaction is prefered at room temp. to about 80 deg.C, and reaction time is prefered for 30 min to 3 hour. In this way, the pigment for preventing the filiform corrosion suitable particularly for the aluminum base material without any environmental pollution is obtained.
Patent JP-S5638836-A (JP)
Title: Detector for semiconductor chip mounter
Inventor: HITOMI YUTAKA
IPC: H01L21/301
Filed: 1979-09-07
Abstract: PURPOSE:To prevent the damage of a push stick due to contact of a jig by a method wherein the semiconductor chips placed on a vinyl sheet are pushed up from the underside with the push stick and an electrostatic capacity type detectors are installed on the push stick having a mechanism wherein it is fixed to a lead frame with an attracting collet. CONSTITUTION:The semiconductor chips 21 which are circularly enlarged on the vinyl sheet 22, they are sutomatically discriminated between good and bad, the good one is attracted by an attracting collet 20 and is mounted on a lead frame. In order to have an easier attraction, the chip is pushed up by the push stick from underside. Electrostatic capacity type detectors 27 and 28 are installed on the push stick 26. As a result, when the mounting work is drawing close to a cassette ring 23, which is a jig, this state of condition is detected by the detectors, an X-Y stage 25 is automatically skipped and the damage due to the contact of the push stick can be prevented automatically.
Patent JP-S5816059-A (JP)
Title: Manufacture of al alloy plate for magnetic disc substrate
Inventor: HOSHINO KOUZOU
IPC: C22F1/04
Filed: 1981-07-20
Abstract: PURPOSE:To manufacture the titled alloy plate with superior surface accuracy by annealing and cold rolling a plate cast continuously from a molten Al alloy contg. Mg essentially, Ti and B selectively and Fe, Mn, Si and Cr each restricted to a specified amount or below. CONSTITUTION:A molten Al alloy contg., by weight, 2.0-3.5% Mg as an essential alloying element, 0.004-0.08% Ti and 0.0005-0.01% B as selective alloying elements and Fe, Mn, Si and Cr each restricted to <=0.1% is used. The molten alloy is passed through a filter applying electrochemical absorption  phenomenon to remove nonmetallic oxides in the molten alloy, and it is cast into  a continuously cast plate having 4-10mm. thickness. The cast plate is quenched,  optionally cold rolled at >=25% draft, annealed at 400-550 deg.C for 1-48hr, and further cold rolled at >=30% draft.
Patent JP-H11293017-A (JP)
Title: Open-cell elastomeric resin body, conductive porous body, preparation thereof and electromagnetic shield material
Inventor: YAMAMOTO TOSHIHIRO
IPC: C08L75/04
Filed: 1998-04-08
Abstract: PROBLEM TO BE SOLVED: To provide conductive porous bodies equipped with various resistance values, especially conductive porous bodies suitable for electromagnetic shield materials, preparation process of these conductive porous bodies and an electromagnetic shield material with a low resistance and an elasticity. SOLUTION: A conductive porous body is equipped with an open-cell elastomeric resin body expanded using an organic anionic surfactant as a foam stabilizer (e.g. an expanded polyurethane wherein the cell membranes are removed, etc.) and a metallic deposit formed on the outer surface and the inner surface of the elastomeric resin body using a cationic surfactant as a surface conditioner of the metallic plating. This metallic deposit has a thickness of from 0.01 to 0.2 μm (resistance value: from about 10<-2> Ω to about 10<5> Ω). The conductive porous body is suitable for an electromagnetic shield material. A metallic plating is formed on the outer surface and the inner surface of this elastomeric resin body using a cationic surfactant as a surface conditioner of the metallic plating. The plating time is within 7 minutes.
Patent JP-H11298793-A (JP)
Title: Image-pickup device and its method
Inventor: OTA SEIICHI
IPC: H04N5/235
Filed: 1998-04-09
Abstract: PROBLEM TO BE SOLVED: To provide an image-pickup device, capable of extending the life time of a battery in proportion to the reduced number of light-emitting times by reducing the number of the light emission to set the light quantity of an image obtained by preliminary emitted light to be photographic image data when the light quantity is proper. SOLUTION: When a shutter button 37 is depressed (S1) after setting a stroboscopic image-pickup mode (S0), a preliminary light-emitting quantity is determined and a light-emitting quantity control pulse is sent to a stroboscopic light- emitting part to a preliminary emitted light (S2). Then, the light quantity of a subject at the time of emitting stroboscopic light is detected (S3) to determine whether the quantity is appropriate as an image-pickup light quantity (S4). Then, when the light quantity of the image of the subject picked up by the preliminary emitted light is within a proper range, the fetched image of the subject is recorded as a photographic image (S8).  Meanwhile, when the light quantity is not proper, a light quantity required for photographing is determined based on the fetched light quantity of the subject (S6) for making a strobe to emit main light to fetch the image (S7) to be recorded as a photographic image (S8).
Patent JP-H10294269-A (JP)
Title: Projection exposure method/device
Inventor: ISHII YUUKI
IPC: G03F7/20
Filed: 1997-04-16
Abstract: PROBLEM TO BE SOLVED: To provide projection exposure method/device, which can reduce the lens aberration of a projection lens and can improve an image-forming characteristic in the projection exposure device switching an illumination condition and projecting the pattern of a recticle on the projection exposure device/ method used in a photolithography process. SOLUTION: The method is provided with an illumination system 52 which can illuminate the pattern formed in the recticle 1 by switching the illumination condition and the projection lens 3 projecting the image of the pattern on a wafer 4 and is provided with a switching mechanism 64 inserting one of plural aberration correction boards 5 provided in accordance with the image forming characteristic of the projection lens 3 which changes at every illumination condition and an image forming characteristic control system 19 correcting the change of the image forming characteristic based on the inserted aberration correction board 5.
Patent JP-H08312336-A (JP)
Title: Nitrogen dioxide reducer
Inventor: TASHIRO YOSHIHISA
IPC: F01N3/08
Filed: 1995-05-12
Abstract: PURPOSE: To aim at the proper maintenance of nitrogen dioxide purification modulus by altering the reference temperature of a catalyzer for which a hydrocarbon supply means starts a supply of hydrocarbon, with a catalytic secular change signal given by a means detecting a secular change in the catalyzer. CONSTITUTION: With a hydrocarbon(HC) supply routine started, engine load and engine speed are read, and also an HC supply is read out of an HC map. At this time, a catalytic secular change detecting routine selecting this HC map is started, an inlet exhaust temperature and a catalyzer temperature of a catalytic unit 4, where an exhaust temperature sensor 8 and a catalytic tejmperature sensor 9 output, are read as well. In addition, a temperature difference between them is calculated, whereby a fact that whether this temperature difference is smaller than the reference temperature difference or not, namely, whether a catalyst is subjected to its secular change or not is judged. In an affirmative result, the HC map to be used is specified to a secular change map 1.  Then, in an executive process of the catalytic secular change detecting routine again, if such a fact that the catalyzer is subjected to the secular change is rejudged, the HC map to be used is controlled to be altered to a secular change map 2.