Patents by Inventor Naoto Kobayashi
Naoto Kobayashi 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: 9018871Abstract: A carrier generating unit applies a carrier that monotonically decreases to a switching control unit during either one of a first period that is a period immediately following a period in which a voltage command value is a value not more than a minimum value of the carrier, the voltage command value taking a first predetermined value larger than the minimum value of the carrier in the first period, and a second period that is a period immediately preceding a period in which the voltage command value is not less than a maximum value of the carrier, the voltage command value taking a second predetermined value smaller than the maximum value in the second period.Type: GrantFiled: October 26, 2011Date of Patent: April 28, 2015Assignee: Daikin Industries, Ltd.Inventors: Takeshi Ashida, Hiroshi Hibino, Naoto Kobayashi, Michihiro Nakagawa, Nobuki Kitano, Masaki Kouno
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Patent number: 8823073Abstract: A semiconductor memory element has MOS transistor for writing by a drain-avalanche hot electron. The MOS transistor has a semiconductor substrate, a first semiconductor layer formed on the semiconductor substrate, a floating gate provided on the first semiconductor layer through intermediation of a first insulating film, a channel region formed in a surface of the first semiconductor layer under the floating gate, and source region and a drain region provided on the first semiconductor layer so as to be in contact with the channel region. The channel region has a distribution of at least two kinds of carrier densities provided in at least two portions thereof disposed in parallel along a direction connecting the source region and the drain region.Type: GrantFiled: September 27, 2012Date of Patent: September 2, 2014Assignee: Seiko Instruments Inc.Inventors: Naoto Kobayashi, Kazuhiro Tsumura
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Publication number: 20140091387Abstract: In a transistor including a trench gate, a gate contact hole for connecting a gate electrode and a gate wiring to each other is provided on a trench. In a transistor in which the trench gate is formed in a grid pattern and a plurality of source regions are surrounded by the trench gate, the gate contact hole is formed at an intersection portion of the trench gate.Type: ApplicationFiled: September 23, 2013Publication date: April 3, 2014Applicant: SEIKO INSTRUMENTS INC.Inventor: Naoto KOBAYASHI
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Publication number: 20130221884Abstract: A carrier generating unit applies a carrier that monotonically decreases to a switching control unit during either one of a first period that is a period immediately following a period in which a voltage command value is a value not more than a minimum value of the carrier, the voltage command value taking a first predetermined value larger than the minimum value of the carrier in the first period, and a second period that is a period immediately preceding a period in which the voltage command value is not less than a maximum value of the carrier, the voltage command value taking a second predetermined value smaller than the maximum value in the second period.Type: ApplicationFiled: October 26, 2011Publication date: August 29, 2013Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takeshi Ashida, Hiroshi Hibino, Naoto Kobayashi, Michihiro Nakagawa, Nobuki Kitano, Masaki Kouno
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Patent number: 8513077Abstract: A method of manufacturing a semiconductor device includes forming a silicon nitride film directly on a surface of a semiconductor substrate, forming a first silicon dioxide film on the silicon nitride film, and forming a trench from the surface of the substrate at an opening provided in the silicon nitride and first silicon dioxide films. The first silicon dioxide film is then removed, and a second silicon dioxide film as a gate oxide film is formed on a side surface of the trench. Thereafter, a gate electrode material is deposited directly on a surface of the silicon nitride film to fill the trench and the gate electrode material is removed from the surface of the silicon nitride film to form a gate electrode inside the trench. The method further includes removal of the nitride film and the formation of a source region at a periphery of the trench.Type: GrantFiled: September 13, 2011Date of Patent: August 20, 2013Assignee: Seiko Instruments Inc.Inventor: Naoto Kobayashi
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Patent number: 8448140Abstract: An execution time estimation device includes a program partitioning section that extracts partial programs partitioned by a conditional branch instruction or a function call instruction from a target program, a partial program execution time estimation calculating section that calculates the execution time of each of the partial programs to associate the leading instruction and the end instruction of each of the partial programs, and the calculated execution time with one another, a branch history information generating section that generates a branch history bit sequence which is a sequence of the true-false of the conditional branch instruction of when the target program is executed, an execution trace reproducing section that generates the execution sequences of the partial programs based on the branch history bit sequence, and an execution time estimation calculating section that adds the execution time of the partial programs based on the execution sequences of the partial programs.Type: GrantFiled: June 23, 2009Date of Patent: May 21, 2013Assignee: Tokyo Institute of TechnologyInventors: Tsuyoshi Isshiki, Hiroaki Kunieda, Naoto Kobayashi
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Publication number: 20130082317Abstract: A semiconductor memory element for writing by a drain-avalanche hot electron includes a MOS transistor having a first semiconductor layer of a second conductivity type formed on a semiconductor substrate of a first conductivity type; a floating gate provided on the first semiconductor layer through intermediation of an insulating film; a channel region formed in a surface of the first semiconductor layer under the floating gate; and a source region and a drain region of the first conductivity type provided on the first semiconductor layer so as to be in contact with the channel region in which the channel region has a distribution of at least two kinds of carrier densities.Type: ApplicationFiled: September 27, 2012Publication date: April 4, 2013Inventors: Naoto KOBAYASHI, Kazuhiro TSUMURA
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Publication number: 20130026995Abstract: Provided are a battery protection IC and a battery device, which are capable of ensuring safety even when a charger is connected in a reverse direction. The battery protection IC includes a first switch element provided between an overcurrent detection terminal and a VDD terminal so that, when the charger is connected with reverse polarity, the first switch element interrupts a current path between the overcurrent detection terminal and the VDD terminal. The battery protection IC further includes a second switch element provided between a charge control terminal and the VDD terminal so that, when the charger is connected with reverse polarity, the second switch element interrupts a current path between the charge control terminal and the VDD terminal.Type: ApplicationFiled: July 19, 2012Publication date: January 31, 2013Inventors: Yuichiro Kitajima, Naoto Kobayashi
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Patent number: 8353519Abstract: A sealing device includes a stationary side installation ring fixed to a stationary side member, a rotation side installation ring fixed to a rotation side member, a stationary side lip integrally provided on the stationary side installation ring and slidably contacting the rotation side installation ring, rotation side lips integrally formed on the rotation side installation ring and slidably contacting the stationary side installation ring, and a pulsar ring for a rotary encoder integrally formed on the rotation side installation ring, and magnetized to be multipolar. The rotation side installation ring includes first and second rotation side installation rings which are attached to each other. The rotation side lips are provided on the first rotation side installation ring at a relatively inner side. The pulsar ring is provided on the second rotation side installation ring at a relatively outer side.Type: GrantFiled: July 28, 2011Date of Patent: January 15, 2013Assignee: NOK CorporationInventor: Naoto Kobayashi
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Patent number: 8231129Abstract: To avoid interference of a side lip when plural sealing devices are piled up, a sealing device installed on one member of two members rotating relatively is constructed by combining a mounting ring fitted on the one member and a rubber-like elastic body attached on the mounting ring, and has a side lip formed by the elastic body, the mounting ring has a cylinder portion at a position fitted on the peripheral surface of the one member, the elastic body has a rubber step part provided at axially one side of the cylinder portion, the cylinder portion and the rubber step part have a positional relationship that the former of an upper sealing device is placed on the latter of the one sealing device when piled up, and the side lip of the one sealing device is dimensioned not to interfere with the upper sealing device even when they are in such a positional relationship.Type: GrantFiled: February 27, 2008Date of Patent: July 31, 2012Assignee: NOK CorporationInventors: Naoto Kobayashi, Go Kanzaki
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Patent number: 8196932Abstract: To prevent damage and malfunction, a sealing device for a universal joint has a metal ring (11) fitted on the outer peripheral surface of a shaft portion (111) of a cruciform spider (110) of the universal joint, and inner seal lips (12, 13) and an outer seal lip (14) made of a rubber-like elastic material and provided integrally with the metal ring (11), the inner seal lips (12, 13) slidably contact with the inner peripheral surface of an end of an outer ring (121) of a bearing (120) relatively rotatably supporting the shaft portion (111), the outer seal lip (14) slidably contact with a rising surface (112a) of a boss portion (112) of the cruciform spider (110), and the rising surface (112a) is a surface rising, outside the position where the metal ring (11) is fitted, in an outward radial direction from the shaft portion (111).Type: GrantFiled: September 29, 2008Date of Patent: June 12, 2012Assignee: NOK CorporationInventor: Naoto Kobayashi
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Publication number: 20120061748Abstract: Provided is a method of manufacturing a vertical MOSFET having a trench structure, which is capable of performing stable processing. While leaving a silicon nitride film (13) used to form a trench (7) on a surface of a semiconductor substrate, a gate electrode material (9) is buried inside the trench (7), and then the gate electrode material (9) on the silicon nitride film (13) is removed, to thereby form a gate electrode (9) inside the trench (7).Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Inventor: Naoto Kobayashi
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Patent number: 8087673Abstract: A sealing device comprises a stationary-side installation ring (11) fixed to an outer stationary-side member (201), a rotation-side installation ring (12) fixed to an inner rotation-side member (202), a stationary-side lip (13) provided on the stationary-side installation ring (11) to be slidably in contact with the rotation-side installation ring (12) by its tip, rotation-side lips (14, 15) formed on the rotation-side installation ring (12) to be slidably in contact with the stationary-side installation ring (11) by their tips, a pulsar ring (17) formed of a synthetic resin or rubber-like elastic material mixed with magnetic powder on the rotation-side installation ring (12) and multipolar magnetized, and a collar portion (17a) formed on an outer periphery of the pulsar ring (17) at the outer side than the rotation-side lips (14, 15) to closely face the stationary-side member (201) or the stationary-side installation ring (11), thereby an excellent sealing ability being given.Type: GrantFiled: March 15, 2007Date of Patent: January 3, 2012Assignee: NOK CorporationInventor: Naoto Kobayashi
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Publication number: 20110278800Abstract: A sealing device includes a stationary side installation ring fixed to a stationary side member, a rotation side installation ring fixed to a rotation side member, a stationary side lip integrally provided on the stationary side installation ring and slidably contacting the rotation side installation ring, rotation side lips integrally formed on the rotation side installation ring and slidably contacting the stationary side installation ring, and a pulsar ring for a rotary encoder integrally formed on the rotation side installation ring, and magnetized to be multipolar. The rotation side installation ring includes first and second rotation side installation rings which are attached to each other. The rotation side lips are provided on the first rotation side installation ring at a relatively inner side. The pulsar ring is provided on the second rotation side installation ring at a relatively outer side.Type: ApplicationFiled: July 28, 2011Publication date: November 17, 2011Applicant: NOK CORPORATIONInventor: Naoto KOBAYASHI
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Patent number: 8009247Abstract: A light source apparatus used in a backlight apparatus is disclosed. The light source apparatus includes a light-emitting diode unit and a wiring board. The light-emitting diode unit is provided as one unit by nonlinearly and closely placing respective light-emitting diodes of red, green, and blue colors, at least the light-emitting diode of one color out of the light-emitting diodes of the respective colors being constituted by first and second light-emitting diodes having different chromaticities such that an average chromaticity of the first and second light-emitting diodes is a predetermined chromaticity. On the wiring board, a plurality of light-emitting diode units are arranged at predetermined intervals in a predetermined direction.Type: GrantFiled: November 19, 2007Date of Patent: August 30, 2011Assignee: Sony CorporationInventors: Takashi Oku, Naoto Kobayashi, Tomohisa Uba
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Patent number: 7960967Abstract: A pulsar ring for a rotary encoder has a mounting ring (1) made of a non-magnetic material, with one end being fixed to an inner ring (202) at the rotation side and the other end being positioned in proximity to an outer ring (201) at the stationary side via labyrinth-shaped clearances (G1, G2, G3), a pulsar ring body (2) formed by a synthetic resin material or rubber-like elastic material mixed with magnetic powder, magnetized to have multiple poles, and integrally installed on an inner surface of the mounting ring (1), and a seal ring (3) disposed inside the mounting ring (1), fixed to the inner ring (202) via the mounting ring (1), and slidably in contact with the outer ring (201), whereby the pulsar ring is hardly exposed to disturbances by foreign matters, muddy water, and external magnetic fields from the outside, and consequently can maintain a stable magnetic pattern.Type: GrantFiled: March 15, 2007Date of Patent: June 14, 2011Assignee: NOK CorporationInventor: Naoto Kobayashi
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Publication number: 20110113224Abstract: An execution time estimation device includes a program partitioning section that extracts partial programs partitioned by a conditional branch instruction or a function call instruction from a target program, a partial program execution time estimation calculating section that calculates the execution time of each of the partial programs to associate the leading instruction and the end instruction of each of the partial programs, and the calculated execution time with one another, a branch history information generating section that generates a branch history bit sequence which is a sequence of the true-false of the conditional branch instruction of when the target program is executed, an execution trace reproducing section that generates the execution sequences of the partial programs based on the branch history bit sequence, and an execution time estimation calculating section that adds the execution time of the partial programs based on the execution sequences of the partial programs.Type: ApplicationFiled: June 23, 2009Publication date: May 12, 2011Applicant: Tokyo Institute of TechnologyInventors: Tsuyoshi Isshiki, Hiroaki Kunieda, Naoto Kobayashi
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Publication number: 20100289226Abstract: To prevent damage and malfunction, a sealing device for a universal joint has a metal ring (11) fitted on the outer peripheral surface of a shaft portion (111) of a cruciform spider (110) of the universal joint, and inner seal lips (12, 13) and an outer seal lip (14) made of a rubber-like elastic material and provided integrally with the metal ring (11), the inner seal lips (12, 13) slidably contact with the inner peripheral surface of an end of an outer ring (121) of a bearing (120) relatively rotatably supporting the shaft portion (111), the outer seal lip (14) slidably contact with a rising surface (112a) of a boss portion (112) of the cruciform spider (110), and the rising surface (112a) is a surface rising, outside the position where the metal ring (11) is fitted, in an outward radial direction from the shaft portion (111).Type: ApplicationFiled: September 29, 2008Publication date: November 18, 2010Applicant: NOK CORPORATIONInventor: Naoto Kobayashi
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Publication number: 20100245007Abstract: A magnetized layer (12) is integrally bonded to an annular holder (11) installed to a rotating body, the magnetized layer is made of a material obtained by mixing a magnetic fine particle to a rubber elastic material or a synthetic resin material and magnetized in a multipolar manner at a predetermined pitch in a circumferential direction, and a portion having a different sectional shape from the other portions is formed in a part in a circumferential direction in a joining part of the holder (11) with the magnetized layer (12), by a raised part (11c) or the like, so that a significant point of a signal level is formed in this portion on the basis of a difference in a magnitude of a magnetic field, whereby the significant point is set to a rotation angle measurement starting point.Type: ApplicationFiled: June 9, 2010Publication date: September 30, 2010Inventors: Takehiro Nakagawa, Naoto Kobayashi
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Patent number: RE41732Abstract: Herein disclosed are a liquid crystal display device and a data processing device, which can have their frame portions reduced in area to reduce the size and weight by extracting the terminals of video signals to only one side of a liquid crystal display panel and by arranging a video signal line driving circuit substrate to be connected with the terminals, only at one side of the display panel.Type: GrantFiled: October 31, 2007Date of Patent: September 21, 2010Assignee: Hitachi Displays, Ltd.Inventors: Koaru Hasegawa, Yoshio Toriyama, Naoto Kobayashi, Katsuhiko Yarita, Hironori Kondo, Masahiko Suzuki, Yoshihiro Imajo