baber/WOPTO huggingface dataset:
Patent JP-H06211825-A (JP)
Title: Production of 3-substituted-4-hydroxy-2-butenolide
Inventor: ONISHI TAKASHI
IPC: C07D307/60
Filed: 1993-01-20
Abstract: PURPOSE:To inexpensively produce a 3-substituted-4-hydroxy-2-butenolide useful as a synthetic raw material for 13-cis-vitamin A acid, etc., in high yield. CONSTITUTION:A 3-substituted-4-oxo-2-hydroxy-2-butanoic acid of formula I (R<1> and R<2> are hydrocarbon group) is treated with an acid, preferably hydrochloric acid in the presence of >= an equivalent amount of water based on the compound at room temperature to 150 deg.C, preferably 80-110 deg.C to give a 3- substituted-4-hydroxy-2-butenolide of formula II. The compound of formula I can be readily produced by subjecting an aldehyde of formula III with an glyoxylic acid ester of formula IV or its hemiacetal to aldol condensation.
Patent JP-S63193750-A (JP)
Title: Method for maintaining and testing subscriber optical line network
Inventor: HAGIWARA YUTAKA
IPC: H04B3/48
Filed: 1987-02-06
Abstract: PURPOSE:To test a communication line without interrupting a service, by monitoring an optical signal by using an optical test circuit leaving a communication line set at an active state when a fault or abnormality is generated in the communication line. CONSTITUTION:Either operation is performed whether the optical signal is monitored by mounting the optical test circuit 8 capable of multiplexing/ demultiplexing the optical signal on a station device or an optical wiring board and taking out a part of the optical signal being propagated in an optical fiber, or the characteristic of a subscriber optical line and the retrieval of a fault position are performed by inserting the optical signal and testing optical pulses with different wavelength in the optical fiber, or the simultaneous opening(service available state) or the simultaneous closing(service interrupted state) of the subscriber optical line is performed. In such a way, it is possible to test whether the abnormality of the optical signal sent from a central office is due to the abnormality of the subscriber optical line leaving the line set at the active state.
Patent JP-S52108366-A (JP)
Title: Denitration and desulfurization of exhaust gas
Inventor: SAKII TEIZOU
IPC: B01D53/14
Filed: 1976-03-10
Abstract: PURPOSE: To remove SOx and NOx in exhaust gas at the same time, by washing exhaust gas with water solution, containing alkali metal hydroxide etc., this urea or alkali metal thiosulfate and metal ion, such as Cu ion or Fe ion etc. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-S62202517-A (JP)
Title: Electron-beam exposure device
Inventor: ONO YOSHINOBU
IPC: H01J37/147
Filed: 1986-02-07
Abstract: PURPOSE:To clean an internal constituent simply, and to shorten the time required for the cleaning by mounting a high-frequency coil and a high-frequency power supply supplying the coil with electric power, surrounding a polariscope and a reflected-electron detector. CONSTITUTION:High-frequency coils 11 and a high-frequency power supply 12 supplying the coils 11 with electric power are installed, surrounding at least a polariscope 7 and a reflected-electron detector 10 in constituents disposed in a lens tube 1 for an electron-beam exposure device. Power of 40KHz-4MHz is fed for approximately 2 or 3min at approximately 1-0.5KW, supplying a substance such as oxygen under approximately 10<-2>Torr-10Torr into the lens tube 1 on cleaning. Consequently, a temperature in the lens tube 1 is elevated to approximately 1,000 deg.C, and attachment such as a resist is removed through ashing. Since the cleaning process must be repeated but overhaul, etc. are unnecessitated, the cleaning process is simplified extremely, and manhour requirement is also reduced excessively.
Patent JP-H04252509-A (JP)
Title: Pulse width correction circuit
Inventor: OKADA YOSHIAKI
IPC: H03K5/04
Filed: 1991-01-28
Abstract: PURPOSE:To optimize a delay time of a variable delay circuit 2 by controlling a reference voltage 7 with an external logic signal so as to output a signal with a pulse width in response to the reference voltage 7. CONSTITUTION:An inputted pulse signal is varied with a variable delay circuit 2 and a signal having the pulse width in response to the delay time is generated by an R/S flip-flop circuit 3. The signal is given to a low pass filter circuit 4, in which harmonic components of the signal are eliminated to obtain a DC component and the voltage of the DC component and a voltage of a reference voltage generating circuit 7 are added by an operational amplifier circuit 5 to control the variable delay circuit thereby forming stably a signal having an object pulse width.
Patent JP-S55118022-A (JP)
Title: Digital logarithmic expanding circuit for exposure operation
Inventor: FUJIKAWA YOSHITAKA
IPC: G03B7/093
Filed: 1979-03-06
Abstract: PURPOSE: To perform logarithmic expansion highly accurately with a simple constitution by counting APEX exposure value by the clock of the specified frequency by way of shift registers, binary counter, etc.  
     CONSTITUTION: The integer part and 10-odd part of the APEX logarithmic-compressed values corresponding to photometry are preset in a binary counter 2 and shift registers 9, respectively. The count value of a counter 2 which down-counts by the clock of the specified frequency through an AND gate 4 which is opened by the shift start signal from a control part 1 becomes zero and the contents of the registers 9 are shifted until the shift end signal is generated from a NAND gate 3. The contents of the registers 9 are shifted to a binary counter 8 by the preset signal outputted by the control part 1 upon ending of this shift and are counted up by the clock through an AND gate 7 which is opened by the exposure start signal until the count contents of the counter 8 becomes of the specified number, whereby the APEX number is expanded at the rate determined by the bit number and clock frequency of the counter 8 and registers 9 with the simple constitution. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-H05113284-A (JP)
Title: Around type freezing refrigerator open display case
Inventor: KOBAYASHI JUNICHI
IPC: F25D21/06
Filed: 1992-02-12
Abstract: PURPOSE:To efficiently hold a temperature in a refrigerator at a suitable temperature by alternately defrosting a front surface opening side cooler and a side surface opening side cooler by using hot gas from a compressor. CONSTITUTION:Refrigerant tubes 24a-24c connected directly to inlet sides of a cooler 4a for a front surface opening and coolers 4b, 4c for side surface openings are connected by connecting tubes 20a, 20b having pressure reducing parts 25a-25c provided on the way, and refrigerant tubes 17a, 17b connected to outlet sides are connected to a hot gas tube 21 connected to a compressor. High temperature and high pressure refrigerant gas from the compressor is fed directly to coolers 4a-4c through the tube 21 to defrost it with the gas. The refrigerant which becomes intermediate temperature and high pressure liquid refrigerant due to defrosting is pressure-reduced through the tubes 20a, 20b, and then fed to the coolers 4a-4c during other cooling operation. Accordingly, it is not necessary to simultaneously defrost all the coolers 4a-4c, but they can be alternately defrosted. Thus, a temperature in a refrigerator can be efficiently held at a suitable temperature.
Patent JP-H10220329-A (JP)
Title: On-vehicle display device
Inventor: ISHIDA MASAHARU
IPC: F02N11/08
Filed: 1997-02-07
Abstract: PROBLEM TO BE SOLVED: To reduce consumption of a battery when an ignition switch is OFF. SOLUTION: A terminal voltage VB of a battery 1 is kept to a constant voltage VDD by a constant voltage circuit 2. When an ignition switch 4 is turned on to receive a voltage VIG, a control IC 3 lights a display 6 to start displaying. If the switch 4 is OFF, transistors Tr1, Tr2, Tr3 are OFF. Consequently, terminals A, B for setting functions are turned into an open state. That is, when the switch 4 is OFF, i.e., an engine is not started, it is possible to prevent any flowing of a terminal current of the terminal for setting functions of the control IC 3, so as to prolong the lifetime of the battery 1.
Patent JP-S52108739-A (JP)
Title: Vector generator
Inventor: ARAKAWA TAKESHI
IPC: G09G1/10
Filed: 1976-03-09
Abstract: PURPOSE:To generate the digital vector at high speed by a simple circuit.
Patent JP-S60169817-A (JP)
Title: Fixing method of strip of concave mirror
Inventor: HIRATA KIYOSHI
IPC: G02B7/182
Filed: 1984-02-15
Abstract: PURPOSE:To simplify a process and to improve operability greately by fitting a fitting arm through a plate body which is fixed inwardly to the concave mirror previously as to the fixing method of the strip type concave for a scanning type film image reader. CONSTITUTION:A plate body 10 which is a little bit short in length and has an R-worked contacting part is fixed previsouly to the internal surface of the strip type concave mirror 6 used for the convergence of a scanning optical system. In this state, this is fitted to the fitting arm 14 for an optical equipment body. Its positioning is carried out by a known means such as a pin, recessed part, etc. A specific angle to the reverse surface of the fitting arm for determining the reflection direction of light is obtained by slanting the plate body previously or employing a seat plate for inclination and lamination structure. Thus, the operability is improved without any trouble of adjustment.
Patent JP-S58142695-A (JP)
Title: Horn type loudspeaker
Inventor: KAWAMURA AKIHISA
IPC: H04R1/30
Filed: 1982-02-18
Abstract: PURPOSE:To cover whole room by small number of horns, by unifying plural horns consisting of four side walls expressed by function of a specified formula and having a tangential angle of opening 1.5-2 times as large as target directional angle holding adjoining side walls in common. CONSTITUTION:Each of horns 11, 12 consists of four side walls and combined in a body having adjoining side walls in common. Left and right side walls of horns 11, 12 are expressed by a function shown in the formula 1. In the formula, aO is the size of a throat, (a) is the size of the section of the horn, (x) is the distance from the throat and alpha is spreading coefficient. Tangential angle of the opening is set to 1.5theta-2.0theta. theta is a target directional angle and an angle that becomes -6dB for sound pressure on the axis.
Patent JP-H09272255-A (JP)
Title: Medium for indicating image and method for forming image
Inventor: ITO NORIYUKI
IPC: B42D15/10
Filed: 1997-02-07
Abstract: PROBLEM TO BE SOLVED: To prevent counterfeit, alteration, and revision by forming dots of holograms or diffraction gratings to have a cavity frequency in which an observation color in a specific visual area fits to any one of three primary colors. SOLUTION: The base material 21 is formed with a separation layer 22, an optical diffraction structure forming layer 23, a back coating layer 26, and a relief surface 23a is formed on the forming layer 23 and a reflective thin film layer 24 is formed thereon by a thin film forming method such as depositing method and sputtering method. On the relief surface 23a, fine unevenness patterns for forming a relief type hologram or diffraction grating is formed, and these dots are made into three kinds of holograms or diffraction gratings in which an observation color fits to any one of three primary colors of RGB in a specific visual area. Thus, various images can be transferred every sheet of bodies to be transferred such as an ID card, a passport, a license, and certificates of all kinds by this transferring member, thereby preventing counterfeit, alteration, and revision.
Patent JP-H09218293-A (JP)
Title: Apparatus for vitrification process
Inventor: TAKAHASHI KAZUHISA
IPC: G01N1/10
Filed: 1996-02-13
Abstract: PROBLEM TO BE SOLVED: To provide a novel vitrified body-processing apparatus which can surely detect a position of a sampling container and prevents a molten glass from piling in a down flow path and clogging the down flow path, etc. SOLUTION: This apparatus sends down a molten glass G of a high-level radioactive waste liquid through a down nozzle 4 at a bottom part of a melting furnace 1 and stores the glass within a vitrified body container 5 located below the furnace 1. The apparatus is provided with a container 10 at a down flow path R running from the down nozzle 4 to the container 5. The container 10 freely comes in/out of the path R, collecting a part of the molten glass G falling to the path R. At this time, a position detection sensor 14 is set in the sampling container 10 so as to detect a position of the container 10. Moreover, an interlock system 18 is set in a control part 11 controlling the descent of the molten glass G from the down nozzle 4. The interlock system 18 stops the descent of the molten glass G from the down nozzle 4 in response to a signal of the position detection sensor 14 when the sampling container 10 is located in the flow path R.
Patent JP-H10221552-A (JP)
Title: Optical wavelength filter and optical wavelength selecting router
Inventor: OKAYAMA HIDEAKI
IPC: G02B6/122
Filed: 1997-02-07
Abstract: PROBLEM TO BE SOLVED: To provide an optical wavelength filter which takes out optical signals of plural wavelength channels even for multiple high-density wavelength. SOLUTION: The optical wavelength filter includes two grating group steps 16a and 16b in which respectively two gratings 12 whose reflection wavelength is fixed are connected with two variable gratings 14 which can shift reflection wavelength in series, and a light circulator 18 which introduces an optical signal of a wavelength channel reflected on the first grating group step 16a to the second grating group step 16b. Of two variable gratings 14, one grating which has basic reflection wavelength corresponding to un-selected wavelength channel of those of input optical signals shifts its reflection wavelength to wavelength other than basic wavelength of another variable grating 14 at the same step.
Patent JP-H01201186-A (JP)
Title: Solid track detector
Inventor: SHIN YUJI
IPC: G01T5/10
Filed: 1988-02-04
Abstract: PURPOSE:To improve sensitivity by consisting the detector of a copolymer of at least one kind of specific diallyl carbonate monomers and at least one kind of diallyl sulfonate monomers. CONSTITUTION:The diallyl sulfonate monomers used in this copolymer are expressed by formula II. In formula, R<3> and R<4> are a divalent hydrocarbon group and may be the same or different. Preferable examples of these monomers are diethylene glycol bisallylsulfonate and di-n-propylene glycol bisallylsulfonate. The diallyl carbonate monomers which are the other one of the copolymer are expressed by formula I. In formula, R<1> and R<2> are a divalent hydrocarbon group and may be the same or different and the embodiments thereof are the same as for the above-mentioned R<3> and R<4>. The detector having the excellent sensitivity is obtd. by using the polymers formed by copolymerizing the monomers expressed by formula I and formula II.
Patent JP-H03228606-A (JP)
Title: Sowing device for paper pot sheet
Inventor: TAKAGI TADAO
IPC: A01C7/16
Filed: 1990-02-05
Abstract: PURPOSE:To feed no seed into one or more seed-transferring grooves leading to one or more non-employed falling chutes to prevent the falling of seeds not required, by disposing one or more switch valves in one or two side passageways among passageways. CONSTITUTION:When a sowing device responses to a paper pot sheet 1 having a small number of pot lines, seed-supplying passageways for individually supplying the seeds are formed between a seed-supplying hopper 31 and individual seed transfer grooves 39. Since one or more switch valves 44 are disposed in one or both side passageways 41 among passageways 41, the supply of the seeds into one or more seed transfer grooves 39 leading to one or more falling chutes not used is prevented when the one or more passageways 41 are closed with the switch valves 44, thereby permitting to prevent the falling of sees not desired and the falling of unexpected seeds into the pots of the paper pot sheet 1.
Patent JP-H05185026-A (JP)
Title: Production of decorative laminated sheet and transfer sheet used therefor
Inventor: TAKAHASHI YOSHIO
IPC: B05D5/06
Filed: 1992-01-16
Abstract: PURPOSE:To solve the problems in the conventional base material, equipment and process by using a transfer paper having a printed pattern and ruggednesses on the same plane of the base sheet and simultaneously conducting the formation of rugged patterns and printing. CONSTITUTION:A pattern is applied on a base sheet 1 by gravure, a transfer paper applied with protrusions in a specified transfer shape on a printed pattern by silk printing is pressed on a base material 5 to transfer the protrusions on the base material 5 along with the printed pattern, and the base sheet 1 is removed.
Patent JP-S62185471-A (JP)
Title: Solid-state image pickup element
Inventor: OZAKI TOSHIBUMI
IPC: H04N5/335
Filed: 1986-02-10
Abstract: PURPOSE:To reduce random noise, to shorten the time for mixing a smear charge to a signal and to have a high S/N and a low smear by providing an amplifier and a correlation double sampling circuit every vertical signal line of a MOS type image pickup element, resetting the vertical signal line and thereafter reading a signal charge. CONSTITUTION:During a horizontal blacking period, a voltage RG goes to a high level and when a reset switch 25 is opened, a pseudo signal in the vertical signal line is discharged. Then, when the voltage RG goes to a low level, noise voltage Vn due to the heat noise of a reset switch 25 is amplified by the amplifier 21 and sample held to a capacity 28. The fluctuation in potential of the vertical signal line in which the noise voltage Vn is superimposed on the fluctuation Vs in potential of the vertical signal line due to the signal charge is amplified by the amplifier 21 and sample held to a capacity 27. The fluctuation Vs in potential of the vertical signal line due to the real signal charge is outputted to the output of a differential amplifier 24. The pass band of the amplifier 21 can be lowered to below 1MH and the noise can be easily reduced. The time for mixing the quantity of the smear charge can be reduced to lower the smear.
Patent JP-H11225375-A (JP)
Title: Information service system
Inventor: NAKAMURA KIMIHARU
IPC: H04W4/02
Filed: 1998-02-06
Abstract: PROBLEM TO BE SOLVED: To easily serve service information of a specific area to plural mobile sets in the area on request of an information server in the information service system. SOLUTION: The information service consists of a network 6 that sets a channel between contained devices, plural radio base stations 2 that contain mobile sets 1 in a prescribed area to a network via a radio channel, a position information management device 3 that manages a resident area of each mobile set, an information service request device 5 that prepares a service information to supply to the mobile sets in the specific area and requests delivery to mobile set in the specific area, and an information service server device 4 that controls a position information inquiry means 401, a service information delivery means 402, and a delivery timing control means 403 or a user registration means 404 to deliver the service information received from the information service server device 4 to each mobile set within a designated area.
Patent JP-H09192522-A (JP)
Title: Crusher
Inventor: SUZUKI MASAKI
IPC: E03C1/266
Filed: 1996-01-20
Abstract: PROBLEM TO BE SOLVED: To add a batch treatment function and a safety function to a conventional continuous treatment type crusher in a crusher for crushing garbage which is attached to the drain port of a sink. SOLUTION: A cylindrical adapter 24 having a diameter larger than that of a cylindrical hang-holding member 22 which is attached to a conventional continuous treatment type crusher to fix a treatment main body to the drain port 42 of a sink bottom part 14A is connected with the hang-holding member 22 by the use of the first clampincy nut 26, the upper end part of the adapter 24 is attached to the drain port 42 of the sink bottom part 14A by the second clamping nut 28. A pair of lead switches 46 is buried in the adapter 24, a magnet is attached to a lid body 50, when the lid body is brought into a closed state by them, an actuation signal is sent to a motor, and the motor is actuated.
Patent JP-H05195687-A (JP)
Title: Underground space construction method
Inventor: NAKAI SAKAE
IPC: E21D9/00
Filed: 1992-01-17
Abstract: PURPOSE:To stably construct a box-shaped space having a large cross section without forming a wasteful space in the excavated space and efficiently utilize the ground. CONSTITUTION:Four cavities 5, 5, 6, 6 are excavated and formed as advance work pits in the ground 2, and a structural body 7 constituted of multiple RC concrete pipes 11 and concrete skeletons 9 and having the cavities 5, 5, 6, 6 at four corners is constructed in the ground 2. When the ground 2 in the structural body 7 is excavated and removed, a service space 30 having a box-shaped large cross section is formed.
Patent JP-S58144283-A (JP)
Title: Communication terminal device of document preparation
Inventor: YAMADA TOSHIAKI
IPC: G06T11/60
Filed: 1982-02-22
Abstract: PURPOSE:To prepare a document using picture information and to transmit the document by inputting and storing picture information such as a sign, a print of a seal and a mark with a dot pattern. CONSTITUTION:An input part 1 inputs character information, format information and control information required for document preparation, document transmission and system control through a keyboard 10. An input part 2 composed of a handy scanner 20 consisting of a lens 20a, a CCD image sensor 20b, etc. and a handy scanner interface 21 inputs picture information such as a sign, a print of a seal and a mark as a dot pattern to store the dot pattern in a floppy disc FDD 50 in an external storage part 5. The storage part 5 also stores the prepared document information displayed on a display part 3 and document information received from a communication control part 6 to display the stored information on the display part 3. An output part 4 prints out the prepared document information and the document information received by the control part 6 on recording paper and the control part 6 transmits transmission document information stored in the storage part 5 to store received information in the storage part 5.
Patent JP-S63195811-A (JP)
Title: Magnetic head
Inventor: MATSUDA TAKAYA
IPC: G11B5/187
Filed: 1987-02-09
Abstract: PURPOSE:To easily work an edge and to obtain a highly accurate finished face by sealing a shrinking agent into a groove formed on the end part of sliding faces of a magnetic head, solidifying the agent and then bending the end part. CONSTITUTION:Plural sliding faces 6 are formed in parallel on the upper surface of a magnetic head core 5 so as to be projected and the surfaces are accurately worked. Then, a groove part 7 is formed on the end part rectangular to the sliding faces 6 so as to be in parallel with the sliding faces 6 and the shrinking agent such as a bonding agent having the coefficient of thermal expansion larger than that of the core 5 is sealed into the groove part 7 and solidified. Consequently, the end part of the sliding faces 6 drawn by the shrinking agent 8 and shaped like a curved surface. Thereby, the worked sliding faces can be formed with high accuracy even if especially highly accurate and complex edge working is not applied to the end part of the sliding faces 6. The shape of the curved surface can be optionally changed in accordance with the shape, depth and position of the groove part 7, the thickness of a collar part 5a and the material of the shrinking agent 8.