Patents by Inventor Keiji Sato

Keiji Sato 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).

  • Patent number: 9660159
    Abstract: A semiconductor device having good TFT characteristics is realized. By using a high purity target as a target, using a single gas, argon (Ar), as a sputtering gas, setting the substrate temperature equal to or less than 300° C., and setting the sputtering gas pressure from 1.0 Pa to 3.0 Pa, the film stress of a film is made from ?1×1010 dyn/cm2 to 1×1010 dyn/cm2. By thus using a conducting film in which the amount of sodium contained within the film is equal to or less than 0.3 ppm, preferably equal to or less than 0.1 ppm, and having a low electrical resistivity (equal to or less than 40 ??·cm), as a gate wiring material and a material for other wirings of a TFT, the operating performance and the reliability of a semiconductor device provided with the TFT can be increased.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: May 23, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toru Takayama, Keiji Sato, Shunpei Yamazaki
  • Publication number: 20170061622
    Abstract: The present invention provides a camera calibration device and a camera calibration system with which it is possible to execute calibration even in a situation where the load-bearing state of a vehicle changes, and also to precisely estimate all of camera parameters and execute calibration without utilizing the parallelism of the vehicle to, e.g., a white line. The orientation of a vehicle is estimated on the basis of a prescribed feature amount extracted from a video, the translation-direction position of a camera relative to ground is corrected on the basis of information obtained from the calibration executed at a time in the past such as the time of product shipment, and a camera parameter pertaining to the orientation of the camera relative to ground is calculated on the basis of the orientation of the vehicle and the translation-direction position of the camera relative to ground.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 2, 2017
    Applicant: Clarion Co., Ltd.
    Inventors: Morihiko SAKANO, Keiji SATO
  • Publication number: 20160284564
    Abstract: In a manufacturing process of a transistor including an oxide semiconductor film, oxygen doping treatment is performed on the oxide semiconductor film, and then heat treatment is performed on the oxide semiconductor film and an aluminum oxide film provided over the oxide semiconductor film. Consequently, an oxide semiconductor film which includes a region containing more oxygen than a stoichiometric composition is formed. The transistor formed using the oxide semiconductor film can have high reliability because the amount of change in the threshold voltage of the transistor by a bias-temperature stress test (BT test) is reduced.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 29, 2016
    Inventors: Shunpei YAMAZAKI, Yuhei SATO, Keiji SATO, Tetsunori MARUYAMA, Junichi KOEZUKA
  • Publication number: 20160275683
    Abstract: A camera calibration device that captures images of at least one marker with at least two cameras and calibrates installation states of the at least two cameras based upon the captured images by the at least two cameras, includes: an extracting unit that extracts a feature amount of the at least one marker based upon the captured images by the at least two cameras; a primary calibration unit that calculates a position of each of the at least two cameras in a marker coordinate system, based upon the feature amount; and a secondary calibration unit that preforms coordinate transformation of the position of each of the cameras in the marker coordinate system calculated by the primary calibration unit, into a position of each of the cameras in a vehicle coordinate system.
    Type: Application
    Filed: November 18, 2014
    Publication date: September 22, 2016
    Inventors: Morihiko SAKANO, Toshiyuki AOKI, Tsukasa OKADA, Keiji SATO
  • Publication number: 20160176343
    Abstract: Provided are a camera calibration device and a camera calibration system that can significantly reduce a burden on an operator associated with transport of calibration patterns or an operation of arranging calibration patterns in a calibration operation, and can significantly reduce the storage place for the calibration patterns.
    Type: Application
    Filed: August 25, 2014
    Publication date: June 23, 2016
    Inventors: Morihiko SAKANO, Keiji SATO
  • Patent number: 9362136
    Abstract: In a manufacturing process of a transistor including an oxide semiconductor film, oxygen doping treatment is performed on the oxide semiconductor film, and then heat treatment is performed on the oxide semiconductor film and an aluminum oxide film provided over the oxide semiconductor film. Consequently, an oxide semiconductor film which includes a region containing more oxygen than a stoichiometric composition is formed. The transistor formed using the oxide semiconductor film can have high reliability because the amount of change in the threshold voltage of the transistor by a bias-temperature stress test (BT test) is reduced.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: June 7, 2016
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yuhei Sato, Keiji Sato, Tetsunori Maruyama, Junichi Koezuka
  • Patent number: 9356319
    Abstract: Disclosed is a production method of a lithium tetrafluoroborate solution for use as a lithium battery electrolytic solution, including: a reaction step of forming lithium tetrafluoroborate by reaction of lithium fluoride and boron trifluoride in a chain carbonate ester solvent and thereby obtaining a reaction solution of the lithium tetrafluoroborate dissolved in the chain carbonate ester solvent; a water removal step of adding a water removing agent to the reaction solution; an acidic impurity removal step of removing an acidic impurity component from the reaction solution by concentrating the reaction solution after the water removal step; and a dilution step of diluting the concentrated solution after the acidic impurity removal step. It is possible by this method to obtain the lithium tetrafluoroborate solution whose acidic impurity content and water content are reduced to be 50 mass ppm or lower and 15 mass ppm or lower, respectively.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: May 31, 2016
    Assignee: Central Glass Company, Limited
    Inventors: Masutaka Shinmen, Shoichi Tsujioka, Tetsu Taroura, Keiji Sato, Takayoshi Morinaka
  • Patent number: 9343774
    Abstract: Disclosed is a method for forming lithium hexafluorophosphate by reacting together phosphorus trichloride, chlorine and lithium chloride in a nonaqueous organic solvent and then making the reaction product formed in the solvent react with hydrogen fluoride. This method is characterized by that a lithium hexafluorophosphate concentrated liquid is obtained by conducting a filtration after making the reaction product formed in the solvent react with hydrogen fluoride and then subjecting the filtrate to a concentration by degassing. By this method, it is possible to easily produce a high-purity, lithium hexafluorophosphate concentrated liquid at a low cost.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: May 17, 2016
    Assignee: Central Glass Company, Limited
    Inventors: Meguru Oe, Keiji Sato, Mitsuya Ohashi, Toshinori Mitsui
  • Publication number: 20150370683
    Abstract: An information processing apparatus includes a plurality of devices, each including a memory that stores link-status information indicating whether or not an error occurs in a link connected to the each device. When a first device among the plurality of devices fails to receive within a predetermined time period a response for a request that has been transmitted by the first device, the first device obtains the link-status information from relevant devices each related to at least one of transfer of the request and transfer of the response, and identifies a link in which the error has occurred or a device that is connected to the link, based on the obtained link-status information.
    Type: Application
    Filed: June 1, 2015
    Publication date: December 24, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Kimihiro NISHIYAMA, Keiji SATO
  • Publication number: 20150299549
    Abstract: A heat storage material composition having a melting temperature utilized for control of an optional management temperature, providing no variation in melting behavior and solidification behavior, and having a constant melting temperature. The heat storage material composition consists primarily of a mixture of a higher alkane having carbon number of 9 to 24 and a higher alcohol having carbon number of 6 to 20, and the mixture has a substantially single melting peak in DSC curve measured by a differential scanning calorimeter (DSC).
    Type: Application
    Filed: December 10, 2013
    Publication date: October 22, 2015
    Applicants: TAMAIKASEI CO., LTD., KANEKA CORPORATION
    Inventors: Toru UEDA, Keiji SATO
  • Publication number: 20150147643
    Abstract: The present invention provides a purified metal complex having oxalic acid as a ligand and a method for industrially producing a purified non-aqueous solvent solution of the metal complex at low cost. In the method of the present invention, oxalic acid contained in a non-aqueous solvent solution of a metal complex having oxalic acid as a ligand is decomposed by a reaction with a thionyl halide in a non-aqueous solvent, and the decomposition product of the reaction and the unreacted thionyl halide are removed by deaeration.
    Type: Application
    Filed: May 29, 2013
    Publication date: May 28, 2015
    Inventors: Takayoshi Morinaka, Satoshi Muramoto, Yoshinori Tateishi, Keiji Sato
  • Publication number: 20150136594
    Abstract: One object is to provide a deposition technique for forming an oxide semiconductor film. By forming an oxide semiconductor film using a sputtering target including a sintered body of a metal oxide whose concentration of hydrogen contained is low, for example, lower than 1×1016 atoms/cm3, the oxide semiconductor film contains a small amount of impurities such as a compound containing hydrogen typified by H2O or a hydrogen atom. In addition, this oxide semiconductor film is used as an active layer of a transistor.
    Type: Application
    Filed: December 22, 2014
    Publication date: May 21, 2015
    Inventors: Shunpei Yamazaki, Toru Takayama, Keiji Sato
  • Patent number: 9030561
    Abstract: To alleviate the strictness degree required for a relative positional relationship between a calibration index and a vehicle in an image calibration method and an image calibration device. The image calibration device includes a calibration index 20, four cameras 10, a distortion correction processing unit 30, a viewpoint transformation processing unit 40, and a calibration processing unit 50. The calibration index 20 includes two mutually parallel lines and a distance between which is known and one line orthogonal to the two lines. The cameras 10 take peripheral area images S1 to S4 of peripheral areas R1 to R4 including the calibration index 20. The distortion correction processing unit 30 corrects the peripheral area images S1 to S4 by using internal parameters M to obtain distortion-corrected images P1 to P4.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: May 12, 2015
    Assignee: Clarion Co., Ltd.
    Inventor: Keiji Sato
  • Patent number: 8971688
    Abstract: An information recording apparatus has a stop mode in which only recording means comprised of a rotatable drum on which a recording head is mounted and recording medium driving means comprised of a capstan/pinch roller are stopped, which stop mode can be changed from a record temporary stop mode. During the stop mode of the recording means and the recording medium driving means, a video signal photo-taken by a camera of the information recording apparatus can be outputted externally, and, change to the stop mode is made effective by a combination of user's selection and/or presence/absence of an external connection device.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: March 3, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keiji Sato
  • Patent number: 8970106
    Abstract: According to one aspect of the present invention, a laminated structure of conductive transparent oxide layers containing silicon or silicon oxide is applied as an electrode on the side of injecting a hole (a hole injection electrode; an anode) instead of the conventional conductive transparent oxide layer such as ITO. In addition, according to another aspect of the invention, a laminated structure of conductive transparent oxide layers containing silicon or silicon oxide, each of which content is different, is applied as a hole injection electrode. Preferably, silicon or a silicon oxide concentration of the conductive layer on the side where it is connected to a TFT ranges from 1 atomic % to 6 atomic % and a silicon or silicon oxide concentration on the side of a layer containing an organic compound ranges from 7 atomic % to 15 atomic %.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: March 3, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Toru Takayama, Naoya Sakamoto, Kengo Akimoto, Keiji Sato, Tetsunori Maruyama
  • Patent number: 8937020
    Abstract: One object is to provide a deposition technique for forming an oxide semiconductor film. By forming an oxide semiconductor film using a sputtering target including a sintered body of a metal oxide whose concentration of hydrogen contained is low, for example, lower than 1×1016 atoms/cm3, the oxide semiconductor film contains a small amount of impurities such as a compound containing hydrogen typified by H2O or a hydrogen atom. In addition, this oxide semiconductor film is used as an active layer of a transistor.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: January 20, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Toru Takayama, Keiji Sato
  • Publication number: 20140370657
    Abstract: In a manufacturing process of a transistor including an oxide semiconductor film, oxygen doping treatment is performed on the oxide semiconductor film, and then heat treatment is performed on the oxide semiconductor film and an aluminum oxide film provided over the oxide semiconductor film. Consequently, an oxide semiconductor film which includes a region containing more oxygen than a stoichiometric composition is formed. The transistor formed using the oxide semiconductor film can have high reliability because the amount of change in the threshold voltage of the transistor by a bias-temperature stress test (BT test) is reduced.
    Type: Application
    Filed: September 4, 2014
    Publication date: December 18, 2014
    Inventors: Shunpei YAMAZAKI, Yuhei SATO, Keiji SATO, Tetsunori MARUYAMA, Junichi KOEZUKA
  • Patent number: 8828794
    Abstract: In a manufacturing process of a transistor including an oxide semiconductor film, oxygen doping treatment is performed on the oxide semiconductor film, and then heat treatment is performed on the oxide semiconductor film and an aluminum oxide film provided over the oxide semiconductor film. Consequently, an oxide semiconductor film which includes a region containing more oxygen than a stoichiometric composition is formed. The transistor formed using the oxide semiconductor film can have high reliability because the amount of change in the threshold voltage of the transistor by a bias-temperature stress test (BT test) is reduced.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: September 9, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yuhei Sato, Keiji Sato, Tetsunori Maruyama, Junichi Koezuka
  • Patent number: 8771882
    Abstract: There is provided a method for producing an electrolyte solution for lithium ion batteries, in which lithium hexafluorophosphate is used as an electrolyte, comprising the steps of (a) reacting phosphorus trichloride, chlorine and lithium chloride in a nonaqueous organic solvent; and (b) reacting a reaction product of the step (a) formed in the solvent, with hydrogen fluoride.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: July 8, 2014
    Assignee: Central Glass Company, Limited
    Inventors: Keiji Sato, Meguru Oe
  • Patent number: 8753491
    Abstract: It is an object to provide a method for packaging a target material with which a thin film that is less contaminated with an impurity in the air such as a compound containing a hydrogen atom can be formed. In addition, it is an object to provide a method for mounting a target with which a thin film that is less contaminated with an impurity can be formed. In order to achieve the objects, a target material in a target is not exposed to the air and kept sealed after being manufactured until a deposition apparatus on which the target is mounted is evacuated.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: June 17, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Toru Takayama, Keiji Sato