Patents by Inventor Keiichi Ito
Keiichi Ito 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: 7843107Abstract: A dynamoelectric machine including first and second permanent magnets held by first and second magnet seats on first and second yoke portions so as to face inner circumferential surfaces of tip end portions of first and second claw-shaped magnetic pole portions. The first and second permanent magnets are magnetically oriented in a reverse direction to orientation of a magnetic field that the field coil produces. The dynamoelectric machine enables permanent magnet holding reliability to be increased, induced voltage during no-load de-energization to be suppressed, and thermal demagnetization of magnets due to high-frequency magnetic fields that are induced by stator slots to be avoided.Type: GrantFiled: March 9, 2007Date of Patent: November 30, 2010Assignee: Mitsubishi Electric CorporationInventors: Masaya Inoue, Kanji Shinkawa, Masao Morita, Haruyuki Kometani, Toshiyuki Yoshizawa, Moriyuki Hazeyama, Keiichi Ito, Takeshi Mori, Hiroyuki Akita, Yoshinori Miyamoto, Shinji Nishimura
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Publication number: 20100096941Abstract: A dynamoelectric machine including first and second permanent magnets held by first and second magnet seats on first and second yoke portions so as to face inner circumferential surfaces of tip end portions of first and second claw-shaped magnetic pole portions. The first and second permanent magnets are magnetically oriented in a reverse direction to orientation of a magnetic field that the field coil produces. The dynamoelectric machine enables permanent magnet holding reliability to be increased, induced voltage during no-load de-energization to be suppressed, and thermal demagnetization of magnets due to high-frequency magnetic fields that are induced by stator slots to be avoided.Type: ApplicationFiled: March 9, 2007Publication date: April 22, 2010Applicant: Mitsubishi Electric CorporationInventors: Masaya Inoue, Kanji Shinkawa, Masao Morita, Haruyuki Kometani, Toshiyuki Yoshizawa, Moriyuki Hazeyama, Keiichi Ito, Takeshi Mori, Hiroyuki Akita, Yoshinori Miyamoto, Shinji Nishimura
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Publication number: 20100035433Abstract: Provided is a polishing agent composition for chemical mechanical polishing, which is used for polishing a surface of a semiconductor integrated circuit device to be polished. The polishing agent composition contains silica particles, one or more oxidizing agents selected from the group consisting of hydrogen peroxide, ammonium persulfate and potassium persulfate, a compound represented by formula (1), pullulan, one or more acids selected from the group consisting of nitric acid, sulfuric acid and carboxylic acids, and water, and has a pH within the range of 1-5. According to the present invention, a flat surface of an insulating layer having a buried metal interconnect can be attained in polishing of a surface to be polished during production of a semiconductor integrated circuit device. Further, a semiconductor integrated circuit device having a highly planarized multilayer structure can be obtained.Type: ApplicationFiled: October 16, 2009Publication date: February 11, 2010Applicant: Asahi Glass Company, LimitedInventors: Satoshi TAKEMIYA, Keiichi ITO
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Patent number: 7636706Abstract: A parameter adjusting device configured to adjust a great number of parameters of a physical model by a genetic algorithm using multiple processing units within a short time. A parameter adjusting device comprises a processing assignment means wherein a part of a multiple processing means is assigned to search processing by a local search method, and assigns the processing of the local search to a low-performance processor. Also, the parameter adjusting device collects an interim result of the search by a genetic algorithm, and uses it for the search processing by the local search method. Through parallelization and efficiency of an adjusting processing by effectively utilizing the resource in the system, the parameter adjusting device can determine the group of the most appropriate parameters within a short time.Type: GrantFiled: December 22, 2004Date of Patent: December 22, 2009Assignee: Evolvable Systems Research Institute Inc.Inventors: Masahiro Murakawa, Keiichi Ito
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Patent number: 7581981Abstract: An electrical junction box has a fitting member for securing the junction box to a vehicle body. The fitting member has a breakdown accelerating portion for enhancing breakdown of the fitting member when the junction box is pulled to remove it from the vehicle body. The breakdown accelerating portion is positioned in a base side of the fitting piece. By a transverse force caused by pulling an associated wiring harness, the breakdown accelerating portion initiates breakdown of a bracket to separate the junction box from the bracket. Another fitting device has a fitting member formed on a junction box for securing the junction box to a vehicle body. The fitting member has a slot for enhancing breakdown of the fitting member when the junction box is pulled to remove the junction box from the vehicle body, and the fitting member has a compensating piece removably inserted into the slot for adjusting the breakdown of the fitting member.Type: GrantFiled: April 23, 2004Date of Patent: September 1, 2009Assignee: Yazaki CorporationInventors: Tetsuya Yamamoto, Masatoshi Egawa, Keiichi Ito, Yoshihide Tsukamoto, Masanori Wakui, Isao Yoneyama
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Patent number: 7580904Abstract: A chromosome using each of a plurality of parameters of a physical model of a semiconductor element as a gene is defined and the parameters are optimized using a genetic algorithm based on the characteristics measurement data of the semiconductor element fabricated by way of trial. In the selection processing of the genetic algorithm, a sum of a first evaluation value based on linear scale data and a second evaluation value based on logarithmic scale data is employed as the evaluation value of the chromosome.Type: GrantFiled: July 15, 2004Date of Patent: August 25, 2009Assignee: Evolvable Systems Research Institute Inc.Inventors: Masahiro Murakawa, Keiichi Ito, Tetsunori Wada
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Publication number: 20090138417Abstract: Efficient and high-accuracy parameter adjustment is performed by applying a genetic algorithm to a parameter adjustment such as a physical model of a transistor and so on. A parameter adjusting device includes a device generating new parameter genes by an initial population generating device and a special crossover processing by a Latin hyper square method. Also, a normalization device is provided for applying to parameters which are real numbers. Moreover, for example, to exactly meet a specific property of the transistor (MOSFET), an evaluation device which evaluates a parameter in consideration of a log scale, is provided. According to the above-mentioned structure, the genetic algorithm can be applied to the parameter adjustment with a large number of parameters such as the physical model of the transistor and so on, so that a parameter group can be determined with a high degree of accuracy within a short time.Type: ApplicationFiled: April 3, 2006Publication date: May 28, 2009Applicant: Evolvable Systems ResearchInventors: Masahiro Murakawa, Keiichi Ito, Shunsuke Baba
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Patent number: 7533356Abstract: A parameter adjusting device and a parameter adjusting method configured to adjust a great number of parameters used for a circuit design model of a semiconductor element such as a transistor within a short time. A parameter adjusting device adapts a circuit design model wherein a formula for analysis is derived based on a surface potential such as, for example, the HiSIM, as the circuit design model of a semiconductor element; defines a chromosome wherein a respective great number of parameters of the model are genes; and optimizes the parameter based on property measured data of a tested element, using a genetic algorithm. Parameter adjustment comprises a first step adjusting the parameters which determine the structure of the semiconductor element based on the property measured data of a long channel group; and a second step adjusting nonadjusted parameters based on the property measured data of various lengths of channels with reference to a result of the first step.Type: GrantFiled: March 29, 2005Date of Patent: May 12, 2009Assignee: Evolvable Systems Research Institute Inc.Inventors: Masahiro Murakawa, Keiichi Ito, Michiko Miura
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Publication number: 20080281986Abstract: A parameter adjusting device optimizes parameters using a genetic algorithm by using a plurality of processing devices. The plurality of processing devices is respectively configured to individually and simultaneously execute the genetic algorithm and to, a predetermined period prior each local search, be such that each processing device, in accordance with the genetic algorithm processing, based on predetermined numbers, send individuals of a genetic population to others of the plurality of processing devices and further configured to have a migration arrangement for receiving the predetermined numbers.Type: ApplicationFiled: July 17, 2008Publication date: November 13, 2008Applicant: EVOLVABLE SYSTEMS RESEARCH INSTITUTE INC.Inventors: Masahiro Murakawa, Keiichi Ito
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Patent number: 7414194Abstract: A bus bar wiring board includes a first conductive bus bar, a second conductive bus bar, a first insulating board, in which one end portions of the first and the second bus bars are embedded and a second insulating board, in which the other end portions of the first and the second bus bars are embedded. A first longitudinal direction of a cross-section of the first bus bar intersects a second longitudinal direction of a cross-section of the second bus bar.Type: GrantFiled: May 20, 2003Date of Patent: August 19, 2008Assignee: Yazaki CorporationInventors: Masashi Nakayama, Hiroyuki Nakanishi, Keiichi Ito, Yoshihiko Nakahama
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Patent number: 7397521Abstract: A liquid crystal display according to the present invention includes: a liquid crystal cell 10, in which pixels having independently driven reflecting and transmitting members are arranged in a matrix, that is composed of a first substrate 15, a second substrate 17 having pixel driving members, and a liquid crystal 16 sandwiched between the first substrate 15 and the second substrate 17; a first polarizing means 13 disposed facing the first substrate 15; a second polarizing means 19 disposed facing the second substrate 17; a first front light 6 disposed outside the first polarizing means 13; and a second front light 7 disposed outside the second polarizing means 19. Owing to the configuration of the display, images can be displayed on both sides of the liquid crystal display.Type: GrantFiled: February 12, 2004Date of Patent: July 8, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akimasa Yuuki, Naoki Nakagawa, Naoko Iwasaki, Shin Tahata, Keiichi Ito, Tomohiro Sasagawa, Takashi Yamamoto
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Publication number: 20070198103Abstract: A parameter adjusting device and a parameter adjusting method configured to adjust a great number of parameters used for a circuit design model of a semiconductor element such as a transistor within a short time. A parameter adjusting device adapts a circuit design model wherein a formula for analysis is derived based on a surface potential such as, for example, the HiSIM, as the circuit design model of a semiconductor element; defines a chromosome wherein a respective great number of parameters of the model are genes; and optimizes the parameter based on property measured data of a tested element, using a genetic algorithm. Parameter adjustment comprises a first step adjusting the parameters which determine the structure of the semiconductor element based on the property measured data of a long channel group; and a second step adjusting nonadjusted parameters based on the property measured data of various lengths of channels with reference to a result of the first step.Type: ApplicationFiled: March 29, 2005Publication date: August 23, 2007Applicant: EVOLVABLE SYSTEMS RESEARCH INSTITUTE INC.Inventors: Masahiro Murakawa, Keiichi Ito, Michiko Miura
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Publication number: 20070150435Abstract: A parameter adjusting device configured to adjust a great number of parameters of a physical model by a genetic algorithm using multiple processing units within a short time. A parameter adjusting device comprises a processing assignment means wherein a part of a multiple processing means is assigned to search processing by a local search method, and assigns the processing of the local search to a low-performance processor. Also, the parameter adjusting device collects an interim result of the search by a genetic algorithm, and uses it for the search processing by the local search method. Through parallelization and efficiency of an adjusting processing by effectively utilizing the resource in the system, the parameter adjusting device can determine the group of the most appropriate parameters within a short time.Type: ApplicationFiled: December 22, 2004Publication date: June 28, 2007Applicant: EVOLVABLE SYSTEMS RESEARCH INSTITUTE INC.Inventors: Masahiro Murakawa, Keiichi Ito
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Patent number: 7217162Abstract: A tabular terminal-use female terminal in which a tabular terminal is inserted is provided, which tabular terminal-use female terminal includes: a pair of elastic holding pieces extending in an insertion direction of the tabular terminal; a holding portion provided on each elastic holding piece for holding the tabular terminal; a guide face extending from each holding portion to an front end portion of each elastic holding piece for guiding the tabular terminal to the holding portion; and a receiving tapered portion provided on a side portion of each guide face, wherein the tabular terminal is able to be laterally inserted into the tabular terminal-use female terminal.Type: GrantFiled: March 31, 2003Date of Patent: May 15, 2007Assignee: Yazaki CorporationInventors: Tomonori Harada, Yoshinori Shigeta, Masanori Wakui, Keiichi Ito
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Patent number: 7195010Abstract: Disclosed is a space heater, with an air cleaning function, that monitors combustion at a burner, and prevents the halting of combustion due to the erroneous detection of a combustion abnormality.Type: GrantFiled: January 5, 2005Date of Patent: March 27, 2007Assignee: Rinnai CorporationInventors: Shinji Kuroda, Keiichi Ito, Yoshinori Fujisawa, Shinichi Yue
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Publication number: 20060170844Abstract: A liquid crystal display according to the present invention includes: a liquid crystal cell 10, in which pixels having independently driven reflecting and transmitting members are arranged in a matrix, that is composed of a first substrate 15, a second substrate 17 having pixel driving members, and a liquid crystal 16 sandwiched between the first substrate 15 and the second substrate 17; a first polarizing means 13 disposed facing the first substrate 15; a second polarizing means 19 disposed facing the second substrate 17; a first front light 6 disposed outside the first polarizing means 13; and a second front light 7 disposed outside the second polarizing means 19. Owing to the configuration of the display, images can be displayed on both sides of the liquid crystal display.Type: ApplicationFiled: February 12, 2004Publication date: August 3, 2006Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Akimasa Yuuki, Naoki Nakagawa, Naoko Iwasaki, Shin Tahata, Keiichi Ito, Tomohiro Sasagawa, Takashi Yamamoto
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Publication number: 20060158287Abstract: A chromosome using each of a plurality of parameters of a physical model of a semiconductor element as a gene is defined and the parameters are optimized using a genetic algorithm based on the characteristics measurement data of the semiconductor element fabricated by way of trial. In the selection processing of the genetic algorithm, a sum of a first evaluation value based on linear scale data and a second evaluation value based on logarithmic scale data is employed as the evaluation value of the chromosome.Type: ApplicationFiled: July 15, 2004Publication date: July 20, 2006Applicant: Evolvable Systems ResearchInventors: Masahiro Murakawa, Keiichi Ito, Tetsunori Wada
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Patent number: 7034896Abstract: The present invention provides a gradation correction device which can perform gradation correction using digital feedback processing, and furthermore, can control the digital feedback processing with high accuracy. The gradation correction device is provided with a correction gain adjustable amount generation circuit (103) and a correction gain generation circuit (104), and the correction gain adjustable amount generation circuit (103) obtains a correction gain adjustable amount which is non-linear in relation to a difference S between a reference luminance level Yb1 and a maximum luminance level, and greater gamma correction is carried out as the value of the difference is larger.Type: GrantFiled: May 30, 2002Date of Patent: April 25, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Keiichi Ito, Atsuhisa Kageyama
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Patent number: 7013079Abstract: In a hybrid hot air heater according to the present invention, a chassis having first and second outlets 13 on its front face and first and second inlets 12 on its rear face incorporates therein a gas heater unit 2 comprised of a gas burner 20 and a first air-blowing fan 21 and an electric heater unit 3 comprised of an electric heater 33 and a second air-blowing fan 30 in such a manner that the air blowing systems for the respective two heaters may be independent of each other.Type: GrantFiled: October 1, 2003Date of Patent: March 14, 2006Assignee: Rinnai CorporationInventors: Keiichi Ito, Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada
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Publication number: 20060033030Abstract: An X-ray detector comprising a scintillation layer separated by a partition for each pixel and a photodiode for converting fluorescent light, which is converted by the sciltillation layer, into a signal charge, wherein when an average particle diameter of phosphor particles forming the scintillation layer is Ds and an average particle diameter forming the partition is Dw, Ds>Dw is satisfied.Type: ApplicationFiled: March 28, 2003Publication date: February 16, 2006Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Keiichi Ito, Hiroshi Aida, Eiji Oyaizu, Yukihiro Fukuta, Akihisa Saito, Akiko Fujisawa, Katsuhisa Homma