Patents by Inventor Masaki Takashima
Masaki Takashima 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: 10027250Abstract: A semiconductor device includes: power elements that configures an inverter; a conductive plate that electrically connects the power elements; and a current detection portion. The power elements include a first power element and a second power element. The conductive plate includes: a first carrying portion; a second carrying portion; a third carrying portion; a fourth carrying portion; a first connection portion that electrically connects the second carrying portion and the third carrying portion to connect the first power element and the second power element in series; and an output terminal electrically connected with the second carrying portion or the third carrying portion. The first carrying portion is connected with a first power source and the fourth carrying portion is connected with a second power source. The current detection portion is fixed to the output terminal and the magnetic field permeates the current detection portion.Type: GrantFiled: June 26, 2015Date of Patent: July 17, 2018Assignee: DENSO CORPORATIONInventors: Kousuke Nomura, Masaki Takashima
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Patent number: 9915685Abstract: A current detection system includes: first and second magnetic plates arranged in parallel with a predetermined distance; a bus bar for flowing current; and a magneto-electric conversion element converting a lateral direction component of a measurement object magnetic flux, generated by current flowing through the bus bar, to an electric signal. When an external magnetic flux in a lateral direction passes through an accommodation space between the first and second magnetic plates, a trajectory of the external magnetic flux is bent by the first and second magnetic plates, and the accommodation space is divided into a permeable space, through which the external magnetic flux passes, and a non-permeable space, through which the external magnetic flux does not pass. The bus bar is arranged in the accommodation space. The magneto-electric conversion element is arranged in the non-permeable space. The bus bar and the magneto-electric conversion element are lined in the height direction.Type: GrantFiled: January 22, 2015Date of Patent: March 13, 2018Assignees: DENSO CORPORATION, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kousuke Nomura, Ryosuke Sakai, Masaki Takashima, Ichiro Sasada
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Publication number: 20170155341Abstract: A semiconductor device includes: power elements that configures an inverter; a conductive plate that electrically connects the power elements; and a current detection portion. The power elements include a first power element and a second power element. The conductive plate includes: a first carrying portion; a second carrying portion; a third carrying portion; a fourth carrying portion; a first connection portion that electrically connects the second carrying portion and the third carrying portion to connect the first power element and the second power element in series; and an output terminal electrically connected with the second carrying portion or the third carrying portion. The first carrying portion is connected with a first power source and the fourth carrying portion is connected with a second power source. The current detection portion is fixed to the output terminal and the magnetic field permeates the current detection portion.Type: ApplicationFiled: June 26, 2015Publication date: June 1, 2017Inventors: Kousuke NOMURA, Masaki TAKASHIMA
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Publication number: 20160258985Abstract: A current detection system includes: first and second magnetic plates arranged in parallel with a predetermined distance; a bus bar for flowing current; and a magneto-electric conversion element converting a lateral direction component of a measurement object magnetic flux, generated by current flowing through the bus bar, to an electric signal. When an external magnetic flux in a lateral direction passes through an accommodation space between the first and second magnetic plates, a trajectory of the external magnetic flux is bent by the first and second magnetic plates, and the accommodation space is divided into a permeable space, through which the external magnetic flux passes, and a non-permeable space, through which the external magnetic flux does not pass. The bus bar is arranged in the accommodation space. The magneto-electric conversion element is arranged in the non-permeable space. The bus bar and the magneto-electric conversion element are lined in the height direction.Type: ApplicationFiled: January 22, 2015Publication date: September 8, 2016Inventors: Kousuke NOMURA, Ryosuke SAKAI, Masaki TAKASHIMA, Ichiro SASADA
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Patent number: 8013403Abstract: A miniaturized sensor such as a micro-accelerometer includes a sensor chip having a sensor element mounted thereon, with the sensor element being oriented with its central axes passing through the corners of the sensor chip. The corners of the sensor element are thereby located substantially apart from the corners of the sensor chip, so that bending deformation which displaces corners of the sensor chip is substantially prevented from causing displacement of corners of the sensor element. Detection inaccuracy resulting from such displacement can thereby be prevented or reduced.Type: GrantFiled: April 24, 2008Date of Patent: September 6, 2011Assignee: DENSO CORPORATIONInventors: Takashi Katsumata, Masaki Takashima, Mikio Sugiki
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Publication number: 20100025783Abstract: A miniaturized sensor such as a micro-accelerometer includes a sensor chip having a sensor element mounted thereon, with the sensor element being oriented with its central axes passing through the corners of the sensor chip. The corners of the sensor element are thereby located substantially apart from the corners of the sensor chip, so that bending deformation which displaces corners of the sensor chip is substantially prevented from causing displacement of corners of the sensor element. Detection inaccuracy resulting from such displacement can thereby be prevented or reduced.Type: ApplicationFiled: April 24, 2008Publication date: February 4, 2010Applicant: DENSO CORPORATIONInventors: Takashi Katsumata, Masaki Takashima, Mikio Sugiki
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Patent number: 7541915Abstract: In an anti-theft system for a vehicle, a tilt signal generating device outputs a tilt signal based on a tilt of the vehicle. A characteristic sensing device receives the tilt signal and detects a characteristic of the tilt signal. A computing device computes a change of a parameter based on the characteristic of the tilt signal. A state estimating device estimates a parking state of the vehicle based on the change of the parameter. A determination rule setting device sets a determination rule based on an estimation result of the state estimating device. A determining device generates an operational signal when the determining device determines that there is fear of theft by comparing the tilt and the determination rule. A warning device informs the fear of the theft of the vehicle based on the operational signal.Type: GrantFiled: October 26, 2006Date of Patent: June 2, 2009Assignee: DENSO CORPORATIONInventors: Masaki Takashima, Takashi Ishikawa
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Publication number: 20080257045Abstract: A sensor device includes a sensor chip, a circuit chip, a casing, a first adhesive member disposed between the sensor chip and the circuit chip, and a second adhesive member disposed between the circuit chip and the casing. The first adhesive member has an area smaller than that of the sensor chip and a distance between the first adhesive member and an outer peripheral edge of the sensor chip becomes a minimum at a portion adjacent to a centerline of the sensor chip. The second adhesive member has an area smaller than that of the circuit chip and a distance between the second adhesive member and an outer peripheral edge of the circuit chip becomes a minimum at a portion adjacent to a centerline of the circuit chip.Type: ApplicationFiled: April 10, 2008Publication date: October 23, 2008Applicant: DENSO CORPORATIONInventor: Masaki Takashima
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Publication number: 20070096884Abstract: In an anti-theft system for a vehicle, a tilt signal generating device outputs a tilt signal based on a tilt of the vehicle. A characteristic sensing device receives the tilt signal and detects a characteristic of the tilt signal. A computing device computes a change of a parameter based on the characteristic of the tilt signal. A state estimating device estimates a parking state of the vehicle based on the change of the parameter. A determination rule setting device sets a determination rule based on an estimation result of the state estimating device. A determining device generates an operational signal when the determining device determines that there is fear of theft by comparing the tilt and the determination rule. A warning device informs the fear of the theft of the vehicle based on the operational signal.Type: ApplicationFiled: October 26, 2006Publication date: May 3, 2007Applicant: DENSO CORPORATIONInventors: Masaki Takashima, Takashi Ishikawa
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Patent number: 6936904Abstract: A light-receiving element having a light-receiving portion is formed on a chip surface. A digital circuit element, an analog circuit element and a circuit adjusting element are provided for cooperatively processing a detection signal produced from the light-receiving element. And, a light-shielding film is provided for selectively setting a light-receiving region on the chip surface.Type: GrantFiled: July 3, 2003Date of Patent: August 30, 2005Assignee: Denso CorporationInventors: Inao Toyoda, Masaki Takashima, Yasutoshi Suzuki
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Publication number: 20040061193Abstract: A light-receiving element having a light-receiving portion is formed on a chip surface. A digital circuit element, an analog circuit element and a circuit adjusting element are provided for cooperatively processing a detection signal produced from the light-receiving element. And, a light-shielding film is provided for selectively setting a light-receiving region on the chip surface.Type: ApplicationFiled: July 3, 2003Publication date: April 1, 2004Inventors: Inao Toyoda, Masaki Takashima, Yasutoshi Suzuki
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Patent number: 6521882Abstract: Plural photodetectors for receiving light and generating detection signals. A light amount controlling portion is arranged above the photodetectors for controlling an amount of the light to the photodetectors according to an incident angle. A weighting portion for weighting sensitivities of the photodetectors respectively. The sensitivities are weighted to provide a total output characteristic of the weighted detection signals of which magnitude varies according to the incident angle. Weighting is provided by a signal processing circuit by controlling gains, or a translucent film on the photodetectors for controlling transparencies portions above respective photodetectors, or opaque films on the photodetectors for controlling amounts of the light to respective photodetectors. A first function signal may be obtained from a part of photodetectors for an air conditioner and a second function signal may be obtained from all of photodetectors for head lamp on/off controlling.Type: GrantFiled: March 10, 2000Date of Patent: February 18, 2003Assignee: Denso CorporationInventors: Kazuyoshi Sumiya, Keiji Horiba, Masaki Takashima, Inao Toyoda
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Publication number: 20010048140Abstract: A light-receiving element having a light-receiving portion is formed on a chip surface. A digital circuit element, an analog circuit element and a circuit adjusting element are provided for cooperatively processing a detection signal produced from the light-receiving element. And, a light-shielding film is provided for selectively setting a light-receiving region on the chip surface.Type: ApplicationFiled: April 9, 1998Publication date: December 6, 2001Inventors: INAO TOYODA, MASAKI TAKASHIMA, YASUTOSHI SUZUKI
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Patent number: 5955726Abstract: A light sensing apparatus for different control systems includes a photosensitive element which generates a light current depending on light incident thereto. A pre-circuit connected to the photosensitive element is operative for generating separate basic signals in response to the light current generated by the photosensitive element. Processing circuits connected to the pre-circuit are active simultaneously for converting the basic signals generated by the pre-circuit into conversion-resultant signals having different forms respectively. The conversion-resultant signals are outputted to the control systems respectively. At least one of the processing circuits may include an oscillation circuit which oscillates at a frequency depending on related one of the basic signals generated by the pre-circuit.Type: GrantFiled: May 16, 1997Date of Patent: September 21, 1999Assignees: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Masaki Takashima, Keiji Horiba, Akihiro Sasaki, Nobutomo Takagi, Tomonori Suzuki, Kazunori Sakai
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Patent number: 5733667Abstract: A plated nickel-titanium alloy product having a plated layer of nickel or a nickel alloy containing 5 to 15% by weight of cobalt. This product exhibits excellent surface treatability and workability, as well as shape memory effect and super-elasticity. Thus the product is most suitable for eyeglass frame components or similar ornamental articles.The product is produced by plating a layer of nickel or a nickel-cobalt alloy on the nickel-titanium alloy, dehydrogenating, cold working with not less than 10% working ratio, and subjecting to a final heat treatment between 300.degree. C. and 900.degree. C. If the final heat treatment is conducted between 750.degree. C. and 900.degree. C. for 10 to 120 seconds, a product with 4% or more super-elasticity at room temperature can be obtained.Type: GrantFiled: July 13, 1995Date of Patent: March 31, 1998Assignees: Sumitomo Metal Industries, Ltd., Kanto Special Steel Works, Ltd., Sanyo Special Alloys, Ltd.Inventors: Kazuyuki Nakasuji, Mitsuru Aiba, Masaki Takashima
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Patent number: 5637995Abstract: A magnetic detection device including a biasing magnet for generating a bias magnetic field directed to an object of detection having a magnetic material; a magnetoresistance effective element disposed at an inclination of about 45.degree. to the direction of the bias magnetic field to provide a change in resistance caused by the bias magnetic field in accordance with movement of the object of detection, so as to detect a change in state of the bias magnetic field via the change in resistance of the magnetoresistance effective element; and the biasing magnet having a hollow portion containing a holder for holding the magnetoresistance effective element in a position between a surface of the biasing magnet and the object of detection and close to the surface of the biasing element.Type: GrantFiled: March 21, 1995Date of Patent: June 10, 1997Assignee: Nippondenso Co., Ltd.Inventors: Ichiro Izawa, Yasuaki Makino, Susumu Kuroyanagi, Seiki Aoyama, Shigehiro Kasumi, Kenji Yagi, Kazuo Kajimoto, Masaki Takashima, Shinichi Konda
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Patent number: 5501834Abstract: A Ni free ferrous nonmagnetic alloy having excellent corrosion resistance and workability and high cost performance is described.The alloy comprises, by weight, 9 to 25% Cr, 3 to 35% Mn, 3 to 40% Co and the balance Fe and incidental impurities, and sum of Mn and 0.6Co is in accordance with a general relationship as indicated by formula 1/ , and preferably a restricted relationship as indicated by formula 2/ .19%.ltoreq.Mn+0.6 Co.ltoreq.40% 1/22%.ltoreq.Mn+0.6 Co.ltoreq.36% 2/One type of alloy of this invention further containing 0.02 to 2% Ag has excellent machinability as well as corrosion resistance, workability and nonmagnetism.Type: GrantFiled: September 1, 1994Date of Patent: March 26, 1996Assignees: Sumitomo Metal Industries, Ltd., Sanyo Special Alloys, Ltd.Inventors: Kazuyuki Nakasuji, Masaki Takashima