Patents by Inventor Kiyoshi Takeuchi
Kiyoshi Takeuchi 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: 5693450Abstract: There is disclosed a silver halide color photographic light-sensitive material having at least one photographic constitutional layer on a support, wherein at least one reducing agent for color formation, which is a specific hydrazine compound, at least one dye-forming coupler, and at least one high-boiling-point organic solvent whose electron-donative parameter .DELTA..nu..sub.D at 25.degree. C. is 80 or more, are contained in at least one of said photographic constitutional layers. The above light-sensitive material enables low replenishment and reduced discharge of a color developer; can form colors favorably even when the coating film's pH is low; and is reduced in stain due to long-term storage of the light-sensitive material or stain after the processing of the light-sensitive material.Type: GrantFiled: May 24, 1996Date of Patent: December 2, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Makuta, Koki Nakamura, Kiyoshi Takeuchi, Hiroo Takizawa
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Patent number: 5691271Abstract: The present invention provides novel indolylazaphthalides represented by formula (I) described below. The indolylazaphthalides are useful as electron donative colorless dyes for preparing recording materials. Recording materials containing the novel indolylazaphthalides of formula (I) as electron donative colorless dyes provide images having blue to cyan colors at an excellent density, while suppressing light coloration in non-image areas. ##STR1## wherein R.sup.1 represents a divalent linkage group such as an alkylene group, cycloalkylene group, aralkylene group, or a phenylene group, which linkage group is linked to a bimolecular indolylazaphthalide compound to form a bis-type structure.Type: GrantFiled: May 16, 1996Date of Patent: November 25, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Naoto Yanagihara, Kiyoshi Takeuchi, Toyohisa Oya, Naoki Asanuma, Masanobu Takashima, Syunsaku Higashi
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Patent number: 5683853Abstract: A silver halide color photographic material is disclosed, which comprises a support having thereon at least one silver halide emulsion layer, wherein the emulsion layer contains at least one silver halide emulsion layer, wherein said emulsion layer contains at least one dye-forming coupler and at least one reducing agent for coloring represented by the following formula (I), and further the film pH of said silver halide color photographic material is 6.5 or less:R.sup.11 --NH--NH--X--R.sup.12 (I)wherein R.sup.11 represents an aryl group, or a heterocyclic group; R.sup.12 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; X represents --SO.sub.2 --, --CO--, --COCO--, --CO--O--, --CO--N(R.sup.13)--, --COCO--O--, --COCO--N(R.sup.13)-- or --SO.sub.2 --N(R.sup.13)--; where R.sup.13 represents a hydrogen atom or a group described for R.sup.12.Type: GrantFiled: February 21, 1996Date of Patent: November 4, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Makuta, Koki Nakamura, Kiyoshi Takeuchi
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Color developing agent, silver halide photographic light-sensitive material and image forming method
Patent number: 5667945Abstract: There is disclosed a light-sensitive material comprising, in a hydrophilic colloid provided on a base, a color-developing agent represented by formula (I): ##STR1## wherein R.sup.1 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; X.sup.1, X.sup.3, and X.sup.5 each represent a hydrogen atom, a nitro group, a cyano group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a sulfamoyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an acyl group, a trifluoromethyl group, or a heterocyclic group; and X.sup.2 and X.sup.Type: GrantFiled: February 21, 1996Date of Patent: September 16, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Kiyoshi Takeuchi, Koki Nakamura, Toshiki Taguchi, Koichi Nakamura, Toshiyuki Makuta -
Patent number: 5620107Abstract: A cap comprises a cap body and a top lid, which are united by a hinge. A rubber-like elastic member is provided on the cap body such as to be elastically deformed between the cap body and the top when the top lid is closed.Type: GrantFiled: November 22, 1995Date of Patent: April 15, 1997Assignee: Kao CorporationInventor: Kiyoshi Takeuchi
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Patent number: 5604187Abstract: A grease composition for constant velocity joints which consists essentially of: (a) a base oil; (b) a diurea compound represented by the following general formula:R.sup.1 NH--CO--NH--p--C.sub.6 H.sub.4 --CH.sub.2 --p--C.sub.6 H.sub.4 --NH--CO--NHR.sup.2(wherein R.sup.1 and R.sup.3 may be the same or different and each represents an aryl group or a cyclohexyl group); (c) melamine cyanurate; (d) molybdenum disulfide; and (e) a phosphorus-free sulfur extreme pressure agent, and optionally (f) molybdenum dithiocarbamate.The grease composition exhibits excellent pitting-inhibitory effect and heat resistance.Type: GrantFiled: April 16, 1996Date of Patent: February 18, 1997Assignees: Kyodo Yushi Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Kiyoshi Takeuchi, Tsuyoshi Sasaki, Tomio Hanawa, Yoshimi Usui, Takahiro Ogura
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Patent number: 5586462Abstract: A device for converting a straight pipe having an annular cross-section defined between an inner diameter and an outer diameter into a bent pipe having a non-annular cross-section, and method for making the same are disclosed. The device includes a round, bar-shaped guide member having a first end portion and a second end portion which is spaced therefrom in the axial direction and for being mounted slidably with the straight pipe. A floating member is formed into a prismoid and connected to the second end of the round, bar-shaped guide member in a ball-and-socket joint. The prismoid includes a first end in the form of a small polygon whose maximum radial length is less than the inner diameter of the straight pipe, and a second end in the form of a large polygon similar to the small polygon in shape and spaced from the first end in the axial direction.Type: GrantFiled: January 31, 1995Date of Patent: December 24, 1996Assignees: Aisin Seiki Kabushiki Kaisha, Masao NakamuraInventors: Kiyoshi Takeuchi, Shin Takeda, Masao Nakamura
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Patent number: 5516439Abstract: A grease composition for constant velocity joints comprises (a) a base oil; (b) a lithium-containing thickener selected from the group consisting of lithium soap and lithium complex soap; (c) an organic molybdenum compound selected from the group consisting of molybdenum dithiophosphates and molybdenum dithiocarbamates; (d) a zinc dithiophosphate; and optionally (e) a metal salt selected from the group consisting of metal salts of oxidized waxes, metal salts of petroleum sulfonates and metal salts of alkyl aromatic sulfonates. The grease composition for constant velocity joints exhibits a substantially improved effect of reducing friction coefficient and a substantially improved effect of preventing the occurrence of vibration.Type: GrantFiled: July 22, 1994Date of Patent: May 14, 1996Assignee: Kyodo Yushi Co., Ltd.Inventors: Kiyoshi Takeuchi, Tuyoshi Sasaki
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Patent number: 5501348Abstract: A cap comprises a cap body and a top lid, which are united by a hinge. A rubber-like elastic member is provided on the cap body and/or the top lid such as to be elastically deformed between the cap body and the top lid when the top lid is closed.Type: GrantFiled: June 14, 1994Date of Patent: March 26, 1996Assignee: Kao CorporationInventor: Kiyoshi Takeuchi
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Patent number: 5496693Abstract: A silver halide color photographic material excellent in color reproducibility, color forming property, color image fastness and processing dependency. The material comprises a yellow color forming silver halide emulsion layer formed on a support, said layer containing at least one yellow color forming coupler represented by general formula (I) dispersed by dissolution in a high boiling organic solvent in a weight ratio of the high boiling organic solvent to the yellow color forming coupler of 0.6 or more: ##STR1## wherein X represents an organic residue necessary for forming a nitrogen-containing heterocycle with a nitrogen atom; Y represents an aromatic group or a heterocyclic group; Z represents a group which is eliminatable by reaction of the coupler represented by general formula (I) with an oxidation product of a developing agent.Type: GrantFiled: November 2, 1994Date of Patent: March 5, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Yoshioka, Kohzaburoh Yamada, Kiyoshi Takeuchi
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Patent number: 5493238Abstract: In a device parameter extracting apparatus, a set of drain currents I.sub.D (i,j) is measured from each of a plurality of MISFET devices of different gate lengths L(i) by successively applying gate voltages V.sub.G (i,j) to each of the MISFET devices for a predetermined drain voltage, where i identifies each of the MISFET devices and j is an integer. A set of drain currents I.sub.D (i,k) is interpolated from the measured drain currents I.sub.D (i,j) such that the interpolated drain currents correspond respectively to predetermined ones of voltage differences V.sub.G (i,j)-V.sub.TH (i), where k is an integer and V.sub.TH (i) is a threshold voltage of each of the MISFET devices. A set of regression lines R(k)=a(k)L(i)+b(k) is derived in a coordinate space from a set of relationships between V(k)/I.sub.D (i,k) and the gate lengths L(i) of the devices, where a(k) and b(k) are constants, where V(k) represents the predetermined ones of voltage differences.Type: GrantFiled: April 26, 1994Date of Patent: February 20, 1996Assignee: NEC CorporationInventor: Kiyoshi Takeuchi
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Patent number: 5488311Abstract: The electrodes of an electrostatic capacitor which is used to determine the alcohol concentration in a mixture of gasoline and alcohol, are connected with a frequency oscillator of the LC type which applies a signal having a frequency which is equal to or greater than 10 MHz. The setting of the oscillation frequency to 10 MHz or more eliminates the amount of change in electrode loss and enables stable and accurate alcohol concentration determination.Type: GrantFiled: August 10, 1994Date of Patent: January 30, 1996Assignees: Japan Electronic Control Systems Co., Ltd., Nissan Motor Company, LimitedInventors: Hideki Kamioka, Kazumitsu Kobayashi, Masahiko Shimamura, Kiyoshi Takeuchi
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Patent number: 5481485Abstract: In a device simulation apparatus, the structural parameters of a single sample field effect transistor are retrieved from a memory and a set of voltage parameters is established. A source-drain current value and a potential distribution are derived from the structural parameters. A source-drain resistance value is then derived from the source-drain current value and one of the voltage parameters and a channel resistivity value is derived from the potential distribution and the source-drain current value. One of the voltage parameters is successively updated to repeat the process on the updated parameter to produce a said plurality of source-drain current values and a plurality of channel resistivity values. The effective channel length of the transistor is determined from the source-drain resistance values and the channel resistivity values.Type: GrantFiled: May 22, 1995Date of Patent: January 2, 1996Assignee: NEC CorporationInventor: Kiyoshi Takeuchi
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Patent number: 5409807Abstract: A silver halide color photographic material excellent in color reproducibility, color forming property, color image fastness and processing dependency. The material comprises a yellow color forming silver halide emulsion layer formed on a support, said layer containing at least one yellow color forming coupler represented by general formula (I) dispersed by dissolution in a high boiling organic solvent in a weight ratio of the high boiling organic solvent to the yellow color forming coupler of 0.6 or more: ##STR1## wherein X represents an organic residue necessary for forming a nitrogen-containing heterocycle with a nitrogen atom; Y represents an aromatic group or a heterocyclic group; Z represents a group which is eliminatable by reaction of the coupler represented by general formula (I) with an oxidation product of a developing agent.Type: GrantFiled: April 27, 1993Date of Patent: April 25, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Yoshioka, Kohzaburoh Yamada, Kiyoshi Takeuchi
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Patent number: 5332923Abstract: A semiconductor memory is provided which comprises memory cell regions disposed on a substrate, word lines which are connected respectively to the memory cells in the memory cell regions for controlling at least reading information from the memory cells, first bit lines which are formed in a first layer on the substrate and connected respectively to the memory cells for transmitting information, and second bit lines which are formed in a second layer and connected respectively to the memory cells for transmitting information, the second layer being formed on the substrate and electrically insulated from the first layer. The limitation of the layout upon the decrease of the bit line pitch can be eliminated, so that the reduction of the chip occupation area by shrinkage of areas between each adjacent memory cell regions can be realized. The first and second bit lines each is preferable to be patterned like stairs.Type: GrantFiled: August 6, 1992Date of Patent: July 26, 1994Assignee: NEC CorporationInventor: Kiyoshi Takeuchi
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Patent number: 5302802Abstract: The present invention belongs to the field of techniques related to a laser robot and a method of controlling the same, particularly for performing weaving of a laser beam easily with high accuracy without the provision of a vibrating condenser lens at the leading edge of an arm.To solve the problems, in the laser robot (RB) of the present invention, a first inclined mirror (41a) is mounted on a motor (42a) inclined at a predetermined angle from a plane perpendicular to the direction of the rotation axis of a rotor shaft. Similarly, a second inclined mirror (41b) is mounted on a motor (42b) inclined at a predetermined angle. The laser beam (LB) emitted from a laser oscillator (8) is reflected in series by the first and second inclined mirrors (41a, 41b) and is subsequently propagated in the laser robot (RB) to be directed toward workpieces from the tip of a torch (7).Type: GrantFiled: February 5, 1992Date of Patent: April 12, 1994Assignee: Shin Meiwa Industry Co., Ltd.Inventors: Shigeki Fujinaga, Kiyoshi Takeuchi, Masakazu Kobayashi, Shigeki Ochi, Junko Momosaki, Eizo Tsuda, Shinsuke Inoue, Kazumasa Yoshima
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Patent number: 5239375Abstract: A real-time endoscopic image processing system for removing a net pattern from an image has an image processing section (1000) which includes a first controlling circuit (400) for receiving a video signal (S2) from one of a video signal S1 output from a television camera (14) and a VTR, or the like. A horizontal sample-hold circuit (500) generates a horizontal peak sample-hold signal (S5) by continuously sampling and holding the peak value of a sinusoidal video signal voltage from the video signal output (S2) which corresponds to the bright and dark portions of an image. A second controlling circuit (600) delays the horizontal peak sample-hold signal (S5) and compares a delay signal (S5D) with the horizontal peak sample-hold signal (S5) to detect the peak value of the original voltage which varies in a sinusoidal form with respect to the vertical scanning direction, and outputting a vertical peak sampling controlling signal (S6).Type: GrantFiled: February 5, 1992Date of Patent: August 24, 1993Assignee: Fukuda Denshi Co., Ltd.Inventors: Tamon Mizoguchi, Makoto Magara, Toshihiko Yamagata, Shinichi Kawamura, Masami Uchibori, Shigekazu Nagashima, Kiyoshi Takeuchi
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Patent number: 5230238Abstract: The knock sensing apparatus comprises a metallic head gasket having a high vibration transmissibility and tightly sandwiched between a cylinder block and a cylinder head, a knock sensor fixed to the metallic head gasket, and a knock detecting circuit. Therefore, vibration of the cylinder block can be more effectively transmitted from each of plural combustion chambers of a multicylinder engine to the knock sensor via the metallic head gasket, at almost the same vibration level, and preferably in the form of longitudinal vibration waves therethrough, as compared with when knock vibration is transmitted through the cylinder block made of material with low vibration transmissibility.Type: GrantFiled: March 29, 1991Date of Patent: July 27, 1993Assignee: Nissan Motor Co., Ltd.Inventor: Kiyoshi Takeuchi
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Patent number: 5207936Abstract: A grease composition for constant velocity joint is a particular combination of a urea grease composed of a lubricating oil and a urea base thickener with (A) molybdenum sulfide dialkyldithiocarbamate, (B) molybdenum disulfide, (C) zinc dithiophosphate and (D) an oiliness agent of at least one vegetable oils and fats and can attain not only reduction of induced thrust but also improvement of flaking resistance.Type: GrantFiled: February 13, 1992Date of Patent: May 4, 1993Assignee: NTN CorporationInventors: Yasuyuki Anzai, Kiyoshi Takeuchi, Yoshikazu Fukumura, Yukio Hasegawa
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Patent number: 5206129Abstract: Disclosed is a dye forming coupler represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a substituent group, and X is a hydrogen atom or a group which can be eliminated by a coupling reaction with the oxidized species of a primary aromatic amine derivative.Type: GrantFiled: November 7, 1991Date of Patent: April 27, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Kozo Sato, Kiyoshi Takeuchi, Yoshio Ishii