baber/WOPTO huggingface dataset:
Patent JP-S5490177-A (JP)
Title: 3,3-ethylene-dioxypropanal derivative and its preparation
Inventor: FUJISAWA TAMOTSU
IPC: C07D317/26
Filed: 1977-12-27
Abstract: NEW MATERIAL:An 3,3-ethylenedioxy propanal derivative of formula I: [R is (un)substituted alkyl group].  
     EXAMPLE: 3,3-Ethylenedioxyoctanol.  
     USE: A raw material for preparing precursors of prostaglandins widely used as hypotensive agents, diuretics, antithrombotic drugs, bronchodilators, etc. The precursor is obtained by reacting the compound with cyclopentadliene to form a fulvene  derivative, which is subjected to the Diels-Alder reaction.  
     PROCESS: The ketone site of a β-keto ester of formula II is protected by ethylen glycol to give an 3,3-ethylene dioxy propanoic ester of formula III: (R 1  is alkyl or aryl group), which is reduced by a reducing agent, e.g. lithium aluminum hydride, to form an 3, 3-ethylene dioxypropanal derivative of formula IV. The compound of formula IV is oxidized in the presence of an oxidizing agent, e.g. active manganese dioxide, at room temperature to afford the compound of formula I. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-H101347-A (JP)
Title: Single powder type polymer cement composition for half deflective pavement
Inventor: ANAZAWA MASAAKI
IPC: C04B28/02
Filed: 1996-06-18
Abstract: PROBLEM TO BE SOLVED: To lessen drying shrinkage and to improve a fluidity crack resistance and strength developability by incorporating cement, fly ashes, silica sand, reemulsifiable powder resin, powder additives and fine limestone powder into the compsn. SOLUTION: This compsn. is obtd. by uniformly compounding 10 to 70 pts.wt. fly ashes, 6 to 300 pts.wt. silica sand and 2 to 46 pts.wt. reemulsifiable powder resin consisting of vinyl acetate resin powder as well as 0.1 to 8 pts.wt. water reducing agent, 0.01 to 5 pts.wt. defoaming agent, 0.01 to 2.0 pts.wt. thickener, 15 to 50 pts.wt. fine limestone powder having a Blaine's value of 1000 to 6000cm<2> /g and, if necessary, 10 to 150 pts.wt. limestone aggregate having a grain size of 0.01 to 1.0mm and 0.5 to 8 pts.wt. shrinkage reducing agent as the powder additives with 100 pts.wt. cement in such a manner that the total of the silica sand and the limestone aggregate attains 26 to 100 pts.wt.
Patent JP-H08326498-A (JP)
Title: Method for transport shield machine
Inventor: FUKADA MASAO
IPC: E21D11/40
Filed: 1995-06-01
Abstract: PURPOSE: To transport machine materials such as segment smoothly in an omnidirectionally curved tunnel by joining a plurality of divided transportation beams with universal couplings and making out a predetermined interstice required to curve in joint parts. CONSTITUTION: Both the second rail 12b and third rail 12c formed of an I-shaped beam are made to curve with only a predetermined interstice 6 in up and down direction about its curvature center O1. They are also made to curve with only a predetermined interstice 6 and a predetermined angle Q to be made out in edge parts of the upper and lower beams of the second rail 12b and third rail 12c in the left and right direction about the curvature center O1. Then, the second rail 12b and third rail 12c are freely curved about the curvature center O1 in the omnidirection including up and down and left and right directions. In this manner, a transportation machine moves smoothly between respective transportation beams 12, so that tunnel machine materials can be transported in the omnidirectionally curved tunnel with the prevention of a collision of following dollies.
Patent JP-H0715810-A (JP)
Title: Current controller of motor for electric automobile
Inventor: TAKAHASHI TOSHIO
IPC: B60L15/28
Filed: 1993-06-28
Abstract: PURPOSE:To suppress the power consumption of a battery without lowering the travelling performance of an electric automobile, and to secure its travelling distance. CONSTITUTION:When a changeover switch 17 is switched on the side of a circuit 14 for setting a first current limitation value, a current limiting circuit 12 is operated according to the comparison result of the sensed signal of a motor current with a first reference signal corresponding to the first current limitation value. Thereby, a pulse signal outputted from a PWM circuit 9 is modulated, and the motor current is so limited as to be smaller than the first current limitation value. On the other hand, when the changeover switch 17 is switched on the side of a circuit 15 for setting a second current limitation value, the current limiting circuit 12 is operated according to the comparison result of the sensed signal of the motor current with a second reference signal corresponding to the second current limitation value. Concurrently, the second current limitation value is increased with a predetermined gradient from its initial value, and the motor current is so limited as to be smaller than this second current limitation value.
Patent JP-H0452869-A (JP)
Title: Portable retrieving/displaying device
Inventor: KOJIMA KIYONOBU
IPC: G06F3/0488
Filed: 1990-06-15
Abstract: PURPOSE:To obtain a portable retrieving/displaying device for navigation by displaying an indicator expressing the position of an object to be retrieved on a simulated window based upon the three-dimensional information of the object. CONSTITUTION:The retrieving/displaying device is set up to a register mode, an object to be retrieved is read out, its three-dimensional position is read out by a three-dimensional position/azimuth sensor 3 and the identification (ID) number of the object and the three-dimensional position are correspondingly stored in a memory 61. Then, the device is set up to a retrieving mode. The device detects a current three-dimensional position/azimuth, simulates a window and displays the position of the object to be retrieved in a real field observed through the glass window of a flat display 2 based upon the three-dimensional position registered in the memory 61. When the ID number is inputted from a ten-key 5, a cursor is moved in accordance with the movement of the device and always points out the position of the object observed from its visual point. Thus, the direct and easily understandable navigation of window simulation can be attained.
Patent JP-2000342536-A (JP)
Title: Cornea shape measuring instrument
Inventor: BAN YUKINOBU
IPC: G06T1/00
Filed: 1999-06-04
Abstract: PROBLEM TO BE SOLVED: To precisely measure the shape of a cornea by inputting boundary information on a pupil and an iris with respect to an anterior ocular image and correcting detecting information of an index image at the anterior ocular image to obtain the shape of the cornea so as to suppress influence by reflected light from the iris. SOLUTION: A control part 30 picks up diaphanoscopy image of a subject eye illuminated by an eyeground reflected light from a light source through the use of a CCD camera 7 and stores it in a memory 28 through a frame memory 33. Next, an LED 2 is lighted for a prescribed time, illuminating light passing through a Placido plate is reflected by the subject eye to form the reflected image of a Placido ring on a cornea to pick up its image by the camera 7 and the image is stored in a memory 38 through the memory 33. After then, the part 30 is shifted to arithmetic processing for calculating a pupil area and a cornea curvature and, at the time of obtaining the pupil area (the boundary position of a pupil and an iris) by inputting boundary information, corrects detecting information of the image of the Placido ring to calculate the shape of the cornea from the result.
Patent JP-H0948944-A (JP)
Title: Water-base coating composition
Inventor: NAKAGAWA NOBUO
IPC: C09D5/02
Filed: 1996-05-30
Abstract: PROBLEM TO BE SOLVED: To obtain a water-base coating compsn. excellent in adhesion to a substrate, water resistance, etc., by using a water-base compsn. contg. specific fine acrylic copolymer particles and fine urethane resin particles. SOLUTION: This compsn. contains 30-90wt.% fine acrylic copolymer particles and 70-10wt.% fine urethane resin particles. The acrylic copolymer particles are obtd. by subjecting a monomer mixture comprising 50-98.5wt.% (meth) acrylate monomer represented by the formula (wherein R<1> is H or CH3 ; and R<2> is 1-12C alkyl), 0.5-10wt.% carboxylated α,β-ethylenically unsatd. monomer, 1-20wt.% glycidylated α,β-ethylenically unsatd. monomer, 0-10wt.% at least monofunctional monomer, and 0-30wt.% other monomer copolymerizable with the foregoing monomers to emulsion polymn. in the presence of a reactive (polymerizable) emulsifier.
Patent JP-S5681576-A (JP)
Title: Epoxidizing method of olefin
Inventor: SASAKI TADAHIRO
IPC: C07D301/06
Filed: 1979-12-06
Abstract: PURPOSE: To obtain an epoxy compound useful as an organic intermediate from an olefin advantageously, by reacting the olefin with molecular oxygen introduced into the system in the presence of sulfur dioxide and an alkyl nitrite in a polar solvent.  
     CONSTITUTION: An olefin is reacted with oxygen or a gas containing the oxygen in the liquid phase in the presence of sulfur dioxide and a nitrite having an alcohol component consisting of a 1W20C saturated mono- or bivalent aliphatic alcohol or alicyclic alcohol in a polar solvent, preferably an aliphatic nitrile, ketone or ester, inert under the reaction conditions to give the corresponding epoxy compound under relatively mild conditions by the more general and simple epoxidizing method with molecular oxygen. The reaction proceeds readily at about room temperature without requiring special heating and pressurizing steps. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-H0449514-A (JP)
Title: Magnetic recording medium and its production
Inventor: FUJISAWA MASAKO
IPC: G11B5/70
Filed: 1990-06-18
Abstract: PURPOSE:To reduce attraction of a magnetic head and to improve sliding resistance of a magnetic recording medium by depositing fine particles of magnetic material on a magnetic recording film, and then successively forming a protective film and a lubricating film thereon. CONSTITUTION:A base film 2 and a magnetic recording film 3 are successively formed on a smooth nonmagnetic substrate 1. After magnetizing the film 3 in a desired pattern by applying external magnetic field, magnetic fine particles 6 are made to deposit on the film 3 along the pattern. Then, a protective film 4 is formed on the film 3 having deposition of the fine particles 6, and further a lubricating film 6 is formed to constitute the magnetic recording medium 8. Thereby, the deposition amt., density and distribution state of fine particles to be deposited on the magnetic recording film can be accurately controlled to proper ranges without deteriorating the magnetic characteristics of the mag netic recording film, and the obtd. medium is excellent in low viscosity and sliding resistance.
Patent JP-S6049324-A (JP)
Title: Film rewinding safety device
Inventor: SATOU TOSHIHIKO
IPC: G03B17/00
Filed: 1983-08-29
Abstract: PURPOSE:To eliminate the need of a complex safety lock mechamism in a camera by takes up and rewinds a film by a motor driving device by inhibiting a rewind signal from being accepted during an exposure period. CONSTITUTION:For example, release switch SW2 is turned on to drive a magnet Mg with the CC1 output from a decoder DEC, and a rewind switch SWR is turned on when releasing operation starts. Then, an interlocking switch SWR1 is changed over to the side of a fixed contact RW, and a motor M is connected to a power source and driven because transistors T6 and T7 turn on. The outputs of AND gates A2, A5, and A6, however, are ''0'' because the CC1 output from the decoder DEC is still selected even when the Q output of the output terminal Q of a flip-flop DF2 varies from ''0'' to ''1'' by turning on the switch SWR. Therefore, an electromagnetic clutch CL1 is not driven, so rewinding operation is not performed.
Patent JP-S6313778-A (JP)
Title: Recording material
Inventor: SAEKI YOSHISATO
IPC: B41M5/155
Filed: 1986-07-04
Abstract: PURPOSE:To obtain a recording material having favorable stability of developed color images and fulfilling other requirements, by using crystal violet lactone and a p-substd. aminophenylindolylphthalide derivative as electron-donative colorless dyes. CONSTITUTION:Crystal violet lactone and a p-substd. aminophenylindolylphthalide derivative are used as colorless dyes. Among the p-substd. aminophenylinolylphthalide derivatives, a 4-substd. amino-2- alkoxyphenylindolylphthalide is preferred from the viewpoint of the hue of color formed. The ratio of the amounts of crystal violet lactone and the p- substd. aminophenylinolylphthalide derivative used is determined according to performance, the hue of color formed and economy, but the amount of the p-substd. aminophenylindolylphthalide derivative is preferably at least 10%, particularly, at least 30%. An electron-acceptive compound preferably has at least one phenolic hydroxyl group, and may be a salicylic acid derivative, a phenol derivative, a phenolic resin or the like. Among these compounds, a salicylic acid derivative is preferred from the viewpoints of color forming properties, the hue of color formed and light resistance of developed color images.
Patent JP-H10329878-A (JP)
Title: Container
Inventor: NAKAMURA KENJI
IPC: A47K7/00
Filed: 1997-05-31
Abstract: PROBLEM TO BE SOLVED: To securely open a cover with a light single touch. SOLUTION: This container is provided with a container body 4, a detachable top cover 1 for the container body 4, and a cover 2 rotatably pivoted on the top cover 1. An elastic body 27 urging the cover 2 to the opened state is provided. Mutually engaging fixing parts 21a to retain the cover 2 in the closed state against the urging force of the elastic body 27 are provided at the cover 2 and the top cover 1 respectively. A manipulation member 3 to unfix the fixing part is attached to the top cover 1. The manipulation member has a nearly T-shaped form and a T-shaped leg is inserted in a groove 14 formed on the top cover 1. One end of the T-shape can be fitted to the lower face of the closed cover 2. When the other end thereof is pushed down, one end is raised to push up the cover 2.
Patent JP-H066266-A (JP)
Title: Multiple channel echo canceller
Inventor: FURUKAWA HIROMOTO
IPC: G06F17/10
Filed: 1992-06-17
Abstract: PURPOSE:To improve the speed of an echo cancel in almost an initial state by outputting an update gain corresponding to the update of an H register from both a reception power and an input and output rate. CONSTITUTION:M-channel reception signals are stored in each X register which stores the reception signal of each channel, the convolution arithmetic operation of the pertinent reception signal with the estimate of the impulse response string of an echo path stored in each H register is performed by each sum of product means, and the replica of the echo transmitted from each channel to a transmission input is synthesized. Then, the echo replica calculated by the sum of product means is subtracted from the transmission input by a subtracting means, so that the echo included in the transmission input can be canceled. Then, an update gain control means 102 controls the update gain of the H register of a channel whose reception power is relatively small so as to be smaller than conventional, by using the reception power of each channel computed by each reception power arithmetic means 8 and 9, and the input and output rate computed by an input and output arithmetic means 10, in the initial state in which the input and output rate is almost 1.
Patent JP-S6050522-A (JP)
Title: Image forming device
Inventor: WATANABE JIYUNJI
IPC: G03B27/34
Filed: 1983-08-31
Abstract: PURPOSE:To obtain a titled device excellent in operability by placing an additional lens for changing the focal distance of an optical means, and an original information read means so that they can go forward and backward freely, on the way of an optical path between the optical means and an image supporting body. CONSTITUTION:An exposing optical system 29 is provided on the upper part of a photosensitive body 10 and on the lower part of an original platen 2, and constituted of an exposing lamp 4 which executes a reciprocating motion horizontally along the lower face of the original platen 2 by a driving mechanism, reflectors 5, 6 and 7, a lens block 8 which is moved only when changing a magnification, and an immobile reflector 9. Also, an additional lens 71 and a CCD image sensor 72 are provided between the lens block 8 and the reflector 9, and these lens 71 and sensor 72 are supported so as to be freely turnable, so as to obtain a position (shown by a dotted line in the figure) crossing an optical path between the lens block 8 and the reflector 9, and a position (shown by a full line in the figure) being outside of the optical path.
Patent JP-S643627-A (JP)
Title: Liquid crystal display device
Inventor: KAWAMURA HIDEO
IPC: G02F1/1333
Filed: 1987-06-26
Abstract: PURPOSE:To prevent the glass breakage of a liquid crystal display element and to obtain the strength resisting to falling by providing reinforcing bands to the outside circumferential side faces of a liquid crystal display element so as to exert compressive load to the outside circumferential side faces thereof. CONSTITUTION:The reinforcing bands 6, 7 are respectively provided to the outside circumferential side faces, i.e., the outside circumferential side face of an upper glass plate 3a and the outside circumferential side face of a lower glass plate 3b of the liquid crystal display element 3. The bands 6, 7 are so provided as to exert the compressive load to the outside circumferences of the upper glass plate 3a and the lower glass plate 3b. The bands 6, 7 are mounted to the element 3 by a method such as shrinkage fitting of the reinforcing bands 6, 7 consisting of, for example, metallic frame bodies. Since the compressive load is held exerted at all times by the bands 6, 7 to the upper and lower glass plates 3a, 3b of the liquid crystal element 3 in such a manner, the surfaces of the glass plates 3a, 3b are hard and are hardly breakable by the compressive load. The glass breakage of the liquid crystal element when the element falls is thereby prevented.
Patent JP-H029240-A (JP)
Title: Communication system
Inventor: KITA YASUHIRO
IPC: H04B10/275
Filed: 1988-06-28
Abstract: PURPOSE:To simplify and economize the constitution of high speed data transmission and broad band signal transmission system by introducing the optical communication technology to the wired system in the communication network consisting of a central stationary station, plural relay stationary radio equipments and plural mobile radio terminal equipments being the combination of the radio system and the wire transmission. CONSTITUTION:A radio waves fT from a terminal equipment 1 received by a relay stationary radio equipment 10 is converted into an optical signal OT by an electrooptic converter EO12 via a high frequency circuit RF11 and sent to a central stationary station 16 via an optical fiber 14, synthesized with an optical signal from a wire system terminal equipment connected to the central control system 20 and an optical signal from other plural system by an optical multiplier 17. The multiplexed signal is subject to frequency conversion at the frequency band of a frequency fH from the frequency band of the radio frequency area fT by a conversion circuit 18 in the lump, becomes the optical signal OR while being converted again into light, distributed to the communication opposite party of the wired system connecting to the central control system 20 or the relay stationary radio equipment of the opposite communication by an optical distributer 19. The optical signal OR distributed to the relay stationary radio equipment 10 is converted into an electric signal by an optoelectric converter OE 13.
Patent JP-H085346-A (JP)
Title: Surface shape measuring instrument
Inventor: ARIGA SUSUMU
IPC: G01M11/02
Filed: 1994-06-16
Abstract: PURPOSE:To improve the accuracy for measuring the shape of a surface to be measured by eliminating a measurement error due to the distortion of a measuring instrument. CONSTITUTION:A beam splitter 4 for transmitting or reflecting laser beams according to the polarization characteristics, 1/4 wavelength plates 6, 7, and 8 for changing the polarization characteristics of laser beams, and mirrors 3, 5, and 12 for reflecting laser beams are provided on the light path of a laser length-measuring machine 2. The first mirror 5 is placed on the light axis of a laser length-measuring machine 2, a second mirror 12 is placed on a vertical stage 13 for retaining a feeler 11, and the third mirror 3 is located at a position opposing the second mirror 12 and is provided at a fixed position which is at a fixed distance from a placement stand 30. Other optical members 4, 6, 7, and 8 on the light path are provided on a horizontal stage 9 so that laser beams are reflected by the second mirror 12, are transmitted through a beam splitter 4, and are reflected from the third mirror 3 and return to the laser length measuring machine 2.
Patent JP-H056547-A (JP)
Title: Optical disk recording and reproducing device
Inventor: NAKAJIMA JUNJI
IPC: G11B11/10
Filed: 1991-06-28
Abstract: PURPOSE:To provide an optical disk recording and reproducing device suitable for recording and reproducing a rewritable disk or a reproducing only disk recorded with information by mechanical pits. CONSTITUTION:A reference clock signal generating circuit 13 is changed to make the rotating speed of a motor 2 higher at the time of reproducing than at the time of recording information, and at the time of changing the rotating speed attending upon recording and reproducing, a laser is changed in its power by controlling a laser driving circuit 14 in accordance with a detecting signal of a spindle motor control circuit 7. Since the linear speed of the optical disk is changed, and also a light beam can be changed in its light quantity in accordance with the linear speed, the stability of a servo control is secured, and also without causing trouble of either erasing information recorded already or increasing the power consumption, the reproducing of the reproducing only disk and the recording and reproducing of the rewritable type disk can both be performed.
Patent JP-S6220127-A (JP)
Title: Substrate for magnetic disk
Inventor: NAKAGAWA YOSHIO
IPC: G11B5/82
Filed: 1985-07-19
Abstract: PURPOSE:To realize a disk which excels in low defectiveness, chemical stability, surface accuracy and head crush resistance by applying a titanium nitride film for an underlying film of a substrate for a magnetic disk. CONSTITUTION:An aluminum alloy is used as a base body and the titanium nitride film is formed thereon by vapor deposition or sputtering method and further the above-mentioned surface is polished. For example, a 5086 type Al alloy contg. 4.5% Mg is used for the aluminum alloy base body 1 and is finished to 210phi outside diameter, 100phi inside diameter, 1.9t sheet thickness and 0.1mum Rmax surface roughness. After the surface of the Al alloy base body is cleaned, the base body is set in a hollow cathode vapor deposition device in order to form the titanium nitride film and the titanium nitride film 2 is formed to 8.0mum film thickness. The surface is polished to about 1mum after the formation of the titanium nitride film and is finished to 0.05mum Rmax surface roughness, by which the substrate for the magnetic disk is obtd.