Patents by Inventor Shigeru Iguchi
Shigeru Iguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5351387Abstract: This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.Type: GrantFiled: November 16, 1992Date of Patent: October 4, 1994Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Hitoshi Iwata, Katsuhiro Minami, Hisahiro Ando, Hisashi Hirose, Shigeru Iguchi
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Patent number: 5239263Abstract: This invention relates to a rotation sensor which detects the magnetic field which changes with the rotation of a rotary shaft, thereby to detect the amount of rotation of the rotary shaft. The rotation sensor of the present invention has the boundaries between magnetized regions set with high precision. The boundaries forms magnetic fields stably, whereby the detection of rotation is performed with high accuracy.Type: GrantFiled: November 19, 1991Date of Patent: August 24, 1993Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Hitoshi Iwata, Katsuhiro Minami, Hisahiro Ando, Hisashi Hirose, Shigeru Iguchi
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Patent number: 5198324Abstract: The present invention provides a method for making a lithographic printing plate having high sensitivity and high printing endurance by scanner-exposing which comprises subjecting a photographic photosensitive material comprising a support and, provided thereon, an unfogged internal latent image type silver halide emulsion layer to scanner-exposing, subjecting the exposed photosensitive material to non-tanning development in the presence of a nucleating agent, and then subjecting the silver halide portion of the emulsion layer to an oleophilizing treatment.Type: GrantFiled: December 5, 1989Date of Patent: March 30, 1993Assignee: Mitsubishi Paper Mills LimitedInventors: Shigeru Iguchi, Kiyoshi Futaki, Koichi Torizuka, Shozi Oka
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Patent number: 5108871Abstract: Printing endurance of a lithographic printing plate made by using silver complex diffusion transfer process is markedly improved and besides staining which occurs during printing can be effectively inhibited by containing in at least one of a layer which contains nuclei for physical development comprising a heavy metal of a sulfide thereof and a layer contiguous to said layer at least one water-soluble synthetic polymer having the following structural units: ##STR1## wherein A:B=100:0-50:50 (molar ratio)C:D=100:0-50:50 (molar ratio)(A+B):(C+D)=95:5-5:95 (molar ratio) and R.sub.1 represents a hydrogen atom or an alkyl group of 1-6 carbon atoms, R.sub.2 represents a hydrogen atom or an alkyl group of 1-20 carbon atoms, R.sub.3 represents an alkyl group of 1-20 carbon atoms and M represents a hydrogen atom or a cation.Type: GrantFiled: April 20, 1990Date of Patent: April 28, 1992Assignee: Mitsubishi Paper Mills LimitedInventors: Motozo Yamano, Hiroshi Nishinoiri, Shigeru Iguchi
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Patent number: 5027022Abstract: A reverse rotation preventing mechanism for synchronous motors includes a stopper interposed between a frame of a synchronous motor and a suitable stationary member, the stopper, including a stopping portion having elasticity and a rotating member fixed to a rotor shaft of the synchronous motor, and the rotating member, including a metallic flywheel and a gear disposed on the central portion of the flywheel, the flywheel having an engagement portion. The engagement portion of the flywheel of the rotating member is engaged with the stopping portion of the stopper when the synchronous motor is rotated in the direction opposite to a predetermined direction.Type: GrantFiled: June 29, 1990Date of Patent: June 25, 1991Assignee: Tokai Rika Denki Seisakusho Co.Inventors: Kanichi Tanaka, Shigeru Iguchi
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Patent number: 4998177Abstract: An electromagnetic solenoid drive apparatus for use in a vehicle for turning on an electromagnetic solenoid from a battery every time when a command switch is turned on comprises first and second resistors connected in series to each other on an electric line for flowing an electric current through the electromagnetic solenoid; a first switching element turned on in a state in which an output voltage of the battery is lower than a predetermined threshold voltage and short-circuiting both ends of the first resistor; a timer circuit operated for only a constant time in association with the turning-on operation of the command switch; and a second switching element turned on during only the operating period of the timer circuit and short-circuiting both ends of the second resistor.Type: GrantFiled: March 29, 1989Date of Patent: March 5, 1991Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Koji Takizawa, Yukio Takaishi, Noriyuki Suzuki, Norimasa Asai, Koki Imaeda, Shigeru Iguchi, Kenichi Onishi, Hisatoshi Ohta, Masamitsu Suzuki
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Patent number: 4820022Abstract: A liquid crystal antidazzle mirror comprising discharging electrodes respectively provided at electrodes of liquid crystal electrodes, a grounding electrode opposed to the discharging electrodes for discharging a static electricity charged in the liquid crystal section between the discharging electrodes and the grounding electrode. Thus, the antidazzle mirror can protect itself against a static electricity.Type: GrantFiled: July 16, 1986Date of Patent: April 11, 1989Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Hiroshi Demura, Kazumi Hayashi, Yasuo Oyama, Sadao Kokubu, Kouji Takizawa, Shigeru Iguchi
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Patent number: 4786145Abstract: A liquid crystal antidazzle mirror for supplying a power to liquid crystal drive control circuit when a key plate is inserted into a key cylinder which comprises a key position detecting switch for detecting that the key plate is inserted into the key cylinder, and an initializing circuit for initializing the liquid crystal drive control circuit to either special mode of predetermined antidazzle or dazzle state upon receiving a detection signal of the key position detecting switch. Thus, the antidazzle mirror can automatically initialize the antidazzle mirror to either special mode of a predetermined antidazzle and dazzle states when power is supplied from a battery.Type: GrantFiled: June 20, 1986Date of Patent: November 22, 1988Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Tokai Tika Denki SeisakushoInventors: Hiroshi Demura, Akira Kawahashi, Yasuo Ohyama, Sadao Kokubu, Kouji Takizawa, Shigeru Iguchi
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Patent number: 4436805Abstract: Disclosed are a developer for silver complex diffusion transfer process which contains a nitrogen-containing heterocyclic compound having a mercapto or thione group and, as substituent, an alkyl group of 4 or more carbon atoms, an aryl group, or a group having both the alkyl and aryl groups and further contains an alkali-soluble iodide in an amount such that the molar ratio of the iodide in terms of iodine to the heterocyclic compound is in the range of from 1:5 to 5:1 and a silver complex diffusion transfer process using said developer, according to which transferred silver images of improved color tone, maximum density, contrast and sharpness can be obtained.Type: GrantFiled: September 27, 1982Date of Patent: March 13, 1984Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Shigeru Iguchi, Seigo Ebato
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Patent number: 4362811Abstract: A processing solution composition for treating an image receiving layer in silver complex diffusion transfer process, which contains 1.7.times.10.sup.-3 to 1.7.times.10.sup.-2 mole/liter of a bromide and 2.0 to 12.0 mole-% of potassium ion based on total cations of the salts contained in the composition accelerates the transfer speed and gives a silver image high in maximum density, contrast and sharpness to the image.Type: GrantFiled: July 10, 1981Date of Patent: December 7, 1982Assignee: Mitsubishi Paper Mills Ltd.Inventors: Shigeru Iguchi, Shozi Oka
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Patent number: 4310613Abstract: A liquid processing composition for silver complex diffusion transfer process which contains the specific quaternary ammonium salts as defined in the specification prevents formation of colored sludge for a long time without damaging characteristics of silver complex diffusion transfer development and improves color tone of silver images obtained.Type: GrantFiled: May 14, 1980Date of Patent: January 12, 1982Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Shigeru Iguchi, Kazuhiro Emoto
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Patent number: 4287293Abstract: A photographic element having a photographic layer such as silver halide emulsion layer, protective layer, intermediate layer, subcoat layer, diffusion transfer image-receiving layer, antihalation layer and backing layer, can be improved in the adhesion between the layer and support, little curling on drying, and flexibility of the layer, by incorporating into the photographic layer a conversion mixture of a polyvinyl alcohol having a saponification degree of 96% or more and an ethylene-maleic anhydride copolymer.Type: GrantFiled: January 8, 1980Date of Patent: September 1, 1981Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Tamotsu Iwata, Shigeru Iguchi
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Patent number: 4160670Abstract: Printing characteristics of a lithographic printing plate material using the silver complex diffusion transfer process are markedly improved by including in layer which contains nuclei for physical development or a layer adjacent thereto at least one member selected from the group consisting of polyfunctional synthetic polymers containing a functional group having an affinity to said nuclei and a functional group providing hydrophilic property and developing agents for silver halide.Type: GrantFiled: August 5, 1977Date of Patent: July 10, 1979Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Yasuo Tsubai, Shigeru Iguchi, Shigeyoshi Suzuki, Tamotsu Iwata
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Patent number: 4153458Abstract: A photographic binder prepared by heating a mixed aqueous solution of styrene-maleic anhydride copolymer, isobutylene-maleic anhydride copolymer and polyvinyl alcohol in acidic state makes it possible to coat a photographic coating liquid for forming photographic layers in the same manner as in the case of using gelatin and furthermore gives excellent physical properties to the resultant photographic layers.Type: GrantFiled: November 1, 1977Date of Patent: May 8, 1979Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Shigeru Iguchi, Tamotu Iwata, Tetsuo Yano
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Patent number: 4119463Abstract: A photographic binder prepared by heating a mixed aqueous solution of styrene-maleic anhydride copolymer, isobutylene-maleic anhydride copolymer and polyvinyl alcohol in acidic state makes it possible to coat a photographic coating liquid for forming photographic layers in the same manner as in the case of using gelatin and furthermore gives excellent physical properties to the resultant photographic layers.Type: GrantFiled: April 20, 1976Date of Patent: October 10, 1978Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Shigeru Iguchi, Tamotu Iwata, Tetsuo Yano