Patents by Inventor Masahiro Watanabe

Masahiro Watanabe 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: 9660092
    Abstract: Provided is a semiconductor device including an oxide semiconductor and having stable electrical characteristics. Specifically, a semiconductor device including an oxide semiconductor and including a gate insulating film with favorable characteristics is provided. Further, a method for manufacturing the semiconductor device is provided. The semiconductor device includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a source electrode and a drain electrode in contact with the oxide semiconductor film. The gate insulating film includes at least a silicon oxynitride film and an oxygen release type oxide film which is formed over the silicon oxynitride film. The oxide semiconductor film is formed on and in contact with the oxygen release type oxide film.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: May 23, 2017
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Masahiro Watanabe, Mitsuo Mashiyama, Takuya Handa, Kenichi Okazaki, Shunpei Yamazaki
  • Patent number: 9660093
    Abstract: Stable electrical characteristics of a transistor including an oxide semiconductor layer are achieved. A highly reliable semiconductor device including the transistor is provided. The semiconductor device includes a multilayer film formed of an oxide layer and an oxide semiconductor layer, a gate insulating film in contact with the oxide layer, and a gate electrode overlapping with the multilayer film with the gate insulating film interposed therebetween. The oxide layer contains a common element to the oxide semiconductor layer and has a large energy gap than the oxide semiconductor layer. The composition between the oxide layer and the oxide semiconductor layer gradually changes.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: May 23, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenichi Okazaki, Mitsuo Mashiyama, Takuya Handa, Masahiro Watanabe, Hajime Tokunaga
  • Publication number: 20170141407
    Abstract: To provide a membrane-electrode assembly including a catalyst layer that includes a catalyst-supporting carrier in which a catalyst is supported on a carrier made of an inorganic oxide, and a highly hydrophobic substance having a higher degree of hydrophobicity than the inorganic oxide, the catalyst layer being formed on at least one surface of a polymer electrolyte membrane. It is preferable that, in the membrane-electrode assembly, the degree of hydrophobicity of the highly hydrophobic substance is from 0.5 vol % to 45 vol % at 25° C., the degree of hydrophobicity being defined as a concentration of methanol (vol %) when a light transmittance of a dispersion obtained by dispersing the highly hydrophobic substance in a mixed solution of water and methanol reaches 80%.
    Type: Application
    Filed: March 5, 2015
    Publication date: May 18, 2017
    Inventors: Koji TANIGUCHI, Masahiro WATANABE, Makoto UCHIDA, Katsuyoshi KAKINUMA
  • Publication number: 20170141572
    Abstract: An object is to create a control model which can maintain a voltage of a power system within an appropriate range regardless of quality of communication between a control instruction device that calculates a control amount and a control device that executes a predetermined operation on the basis of the control amount.
    Type: Application
    Filed: March 31, 2014
    Publication date: May 18, 2017
    Inventors: Shota OMI, Masatoshi KUMAGAI, Kenichiro YAMANE, Masahiro WATANABE
  • Patent number: 9645538
    Abstract: A developing device includes a developer bearer disposed opposite an image bearer and configured to rotate and carry developer to a latent image on the image bearer, a developer container to contain the developer, a detector including a detecting portion to detect a density of toner in the developer in the developer container, a wire connected to the detector, and a wire holder to hold the wire and determine a position of the wire relative to the detector.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: May 9, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiro Watanabe, Tetsuro Hirota
  • Publication number: 20170109496
    Abstract: In a biological simulation apparatus, an operation unit represents a structure domain where tissues of a biological organ exist by a structure mesh model based on a Lagrange description method and a fluid domain where fluid inside the biological organ exists by an ALE fluid mesh model based on an ALE description method. In a fluid-structure interaction simulation, the operation unit deforms the structure mesh model, and then deforms the ALE fluid mesh model so as to form no gap on a first interface between a domain where a site other than a certain site of the biological organ in the structure domain exists and the fluid domain or no overlap with the structure domain. The operation unit captures a position of a second interface between a domain where the certain site exists and the fluid domain by using the ALE fluid mesh model as a reference.
    Type: Application
    Filed: December 30, 2016
    Publication date: April 20, 2017
    Applicants: FUJITSU LIMITED, The University of Tokyo
    Inventors: Toshiaki HISADA, Seiryo SUGIURA, Takumi WASHIO, Junichi OKADA, Ryozo NAGAI, Taro KARIYA, Masahiro WATANABE, Kohei HATANAKA, Machiko NAKAGAWA, Yoshimasa KADOOKA
  • Publication number: 20170098018
    Abstract: An information processing method includes: acquiring, by a computer, three-dimensional data in which a value that varies based on an elapsed time from a start of a simulation is arranged; acquiring a value of a cross section of the three-dimensional data at each of the elapsed time; arranging the values of the cross section in chronological order in three-dimensional spacetime; and displaying arranged values as a three-dimensional image.
    Type: Application
    Filed: September 27, 2016
    Publication date: April 6, 2017
    Applicant: FUJITSU LIMITED
    Inventors: MASAHIRO WATANABE, Takao Hirahara
  • Patent number: 9614095
    Abstract: An oxide semiconductor transistor comprising an oxide semiconductor layer with high conductivity is provided. A semiconductor device including an oxide semiconductor layer comprising an oxide containing indium, gallium, and zinc (IGZO) and a particle of indium oxide; a gate electrode overlapping with a channel formation region in the oxide semiconductor layer with a gate insulating film interposed therebetween; and a source electrode and a drain electrode overlapping with a source region and a drain region in the oxide semiconductor layer. The semiconductor device may be a top-gate oxide semiconductor transistor or a bottom-gate oxide semiconductor transistor. The oxide semiconductor layer may be formed over or below the source electrode and the drain electrode.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: April 4, 2017
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kenichi Okazaki, Masahiro Watanabe, Mitsuo Mashiyama
  • Publication number: 20170087545
    Abstract: An anion exchange resin having a hydrophobic unit with divalent hydrophobic groups bonded to each other via an ether bond, the divalent hydrophobic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group, carbon-carbon bond or the like; and a hydrophilic unit having divalent hydrophilic groups bonded to each other via carbon-carbon bond, the divalent hydrophilic groups being composed of one aromatic ring, or being composed of a plurality of aromatic rings which are bonded to each other via a divalent hydrocarbon group or carbon-carbon bond, the aromatic ring or at least one of the aromatic rings having an anion exchange group are bonded via carbon-carbon bond.
    Type: Application
    Filed: February 28, 2015
    Publication date: March 30, 2017
    Applicants: TAKAHATA PRECISION JAPAN CO., LTD., UNIVERSITY OF YAMANASHI
    Inventors: Naoki YOKOTA, Manai SHIMADA, Kenji MIYATAKE, Masahiro WATANABE, Junpei MIYAKE, Eriko NISHINO, Koichiro ASAZAWA
  • Patent number: 9606554
    Abstract: A voltage adjustment device, a voltage adjusting method and a power control system for a distribution system are provided, in which the voltage adjustment device and a static var compensator are appropriately operated in a coordinated manner and the sustention of voltage and the enhancement of the operation efficiency are attained. A voltage adjustment device for a distribution system is installed in the distribution system including a static var compensator on an end side and controls a secondary voltage to be within a predetermined limit value by adjusting a tap position.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: March 28, 2017
    Assignees: Hitachi, Ltd., Tohoku Electric Power Co., Ltd., Tohoku Electric Manufacturing Co., Ltd.
    Inventors: Masahiro Watanabe, Ryo Egashira, Kenichiro Yamane, Katsuhiro Matsuda, Takafumi Futakami, Toshiyuki Seto, Jun Murakoshi
  • Patent number: 9599913
    Abstract: An electrophotographic member is provided in which conductivity barely reduces and sufficient conductivity is obtained even under a low temperature and low humidity environment, a reduction in resistance beyond necessity is readily suppressed even under a high temperature and high humidity environment, and the bleeding of the quaternary ammonium salt can be suppressed.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoru Nishioka, Kazuhiro Yamauchi, Masahiro Watanabe, Masaki Yamada, Hideya Arimura
  • Patent number: 9599914
    Abstract: The electrophotographic member includes an electro-conductive substrate and an electro-conductive resin layer as the surface layer on the substrate. The electro-conductive resin layer contains a binder and a bowl-shaped resin particle; the surface of electrophotographic member has a concavity derived from the opening of the bowl-shaped resin particle, a protrusion derived from the edge portion of the opening and the electro-conductive resin layer; and when the surface of the member is observed using a scanning electron microscope at an accelerating voltage (1 kV) and a magnification (×2000) while applying a DC voltage (50 to 100 V) between an electrode disposed opposite to the electrophotographic member and the substrate, the brightness of the protrusion, K1, the brightness of the bottom of the concavity, K2, and the brightness of the exposed surface of the electro-conductive resin layer, K3, satisfy K2<K1, K3<K1 and 0.8?K2/K3?1.2.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Uematsu, Tomohito Taniguchi, Masahiro Watanabe, Noboru Miyagawa, Taichi Sato, Takehiko Aoyama, Takeshi Yoshidome
  • Patent number: 9595122
    Abstract: A drawing apparatus includes a flow line generation section configured to generate the flow line from a predetermined start position; a view setting section configured to set the viewpoint position in the 3D-space; a band-of-facets forming section configured to form a band of facets connecting a plurality of polygon facets along the flow line based on the set viewpoint position; and a texture mapping section configured to map texture onto each of the plurality of polygon facets. The texture represents reflected light on the band of facets with respect to a light source placed at a predetermined position in the 3D-space.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: March 14, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Masahiro Watanabe, Machiko Nakagawa
  • Publication number: 20170047600
    Abstract: A fuel cell system and a method of operating the same is provided that is capable of reducing degradation of a cathode catalyst of a fuel cell. A fuel cell system is provided that includes a fuel cell having a catalyst used for an anode, wherein a carrier of the catalyst is composed of a material with a property where electric resistance in an oxygen containing atmosphere is greater than electric resistance in a hydrogen atmosphere; and a control device configured to control the fuel cell, when supply of fuel gas is stopped during stoppage of operation of the fuel cell, to consume all or part of the fuel gas in a fuel gas chamber, followed by introducing oxygen containing gas into the fuel gas chamber.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 16, 2017
    Applicant: UNIVERSITY OF YAMANASHI
    Inventors: Makoto UCHIDA, Katsuyoshi KAKINUMA, Masahiro WATANABE, Akihiro IIYAMA
  • Publication number: 20170016108
    Abstract: There have been cases where transistors formed using oxide semiconductors are inferior in reliability to transistors formed using amorphous silicon. Thus, in the present invention, a semiconductor device including a highly reliable transistor formed using an oxide semiconductor is manufactured. An oxide semiconductor film is deposited by a sputtering method, using a sputtering target including an oxide semiconductor having crystallinity, and in which the direction of the c-axis of a crystal is parallel to a normal vector of the top surface of the oxide semiconductor. The target is formed by mixing raw materials so that its composition ratio can obtain a crystal structure.
    Type: Application
    Filed: June 22, 2016
    Publication date: January 19, 2017
    Inventors: Shunpei YAMAZAKI, Tetsunori MARUYAMA, Yuki IMOTO, Hitomi SATO, Masahiro WATANABE, Mitsuo MASHIYAMA, Kenichi OKAZAKI, Motoki NAKASHIMA, Takashi SHIMAZU
  • Publication number: 20170012580
    Abstract: The output of a photovoltaic power generator is estimated by estimating a solar radiation amount at a point different from solar radiation measurement points and determining an estimation error amount from solar radiation values measured at limited points. A photovoltaic power generator output estimation method estimates an output of a photovoltaic power generator based on a measured solar radiation value.
    Type: Application
    Filed: January 14, 2015
    Publication date: January 12, 2017
    Inventors: Masahiro WATANABE, Kenichiro YAMANE, Takuya MATSUMOTO, Masatoshi KUMAGAI, Tsukasa OONISHI, Ryo EGASHIRA, Katsuhiro MATSUDA, Jun MURAKOSHI, Tomoya SATO
  • Patent number: 9541380
    Abstract: The purpose of the present invention is to provide a shape inspection device that improves, without making the device larger, durability and measurement precision by measuring a plurality of points with a single distance sensor. The present invention provides a shape measuring device that measures the shape of an object to be measured and that comprises: a distance sensor that calculates the distance to the object to be measure by irradiating a measurement light toward the object to be measured and detecting the reflected light from the object to be measured; a separating unit that separates the measurement light from the distance sensor into a plurality of measurement light rays to be irradiated onto a plurality of measuring points; and a selecting unit that selects, from the plurality of measurement light beams separated by the separating unit, the measurement light to irradiate the object to be measured.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: January 10, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Hiroaki Kasai, Tatsuo Hariyama, Masahiro Watanabe
  • Patent number: 9541854
    Abstract: Provided is an electroconductive member configured to suppress a void image caused by abnormal discharge and a horizontal streak-like image caused by downstream discharge without depending on the thickness of a photosensitive layer of a photosensitive drum over a long period of time. The electroconductive member for electrophotography comprises at least an electroconductive support and a surface layer formed on an outer side of the electroconductive support. The surface layer includes a porous body and satisfies the predetermined (1), (2), and (3).
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: January 10, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuichi Kikuchi, Kazuhiro Yamauchi, Mikio Shimada, Tetsuo Hino, Masahiro Watanabe, Norifumi Muranaka, Satoru Nishioka
  • Publication number: 20160378039
    Abstract: A developing device includes a developer bearer disposed opposite an image bearer and configured to rotate and carry developer to a latent image on the image bearer, a developer container to contain the developer, a detector including a detecting portion to detect a density of toner in the developer in the developer container, a wire connected to the detector, and a wire holder to hold the wire and determine a position of the wire relative to the detector.
    Type: Application
    Filed: June 9, 2016
    Publication date: December 29, 2016
    Inventors: Masahiro WATANABE, Tetsuro HIROTA
  • Publication number: 20160378021
    Abstract: A powder container includes a rotatable powder storage to store powder for image formation, a conveyor to transport the powder inside the powder storage, and a scooping portion to scoop the powder inside the powder storage. The conveyor transports the powder in a powder conveyance direction parallel to a rotation axis of the powder storage toward an opening at one end of the powder storage. The scooping portion causes the powder to flow to the opening. The scooping portion includes a scooping face extending from an inner face of the powder storage toward the rotation axis of the powder storage, and a rim disposed along an inner end of the scooping face in a diameter direction of the powder storage, and at least a portion of the rim protruding downstream beyond the scooping face in a rotation direction of the powder storage.
    Type: Application
    Filed: June 14, 2016
    Publication date: December 29, 2016
    Inventors: Masayuki YAMANE, Takeroh KURENUMA, Masahiro WATANABE