Patents by Inventor Masakazu Itoh

Masakazu Itoh 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).

  • Publication number: 20240127982
    Abstract: An information processing apparatus includes a converting portion having a plurality of electrical conductors to be arranged in mutual separation and a medium arranged so as to mutually connect the plurality of electrical conductors, wherein the converting portion is the information processing apparatus to convert an input signal to an output signal. The medium includes the electrolyte and is configured to be capable of controlling an electrical conductivity of an electrically conductive path mutually electrically connecting the plurality of electrical conductors, and the medium is selected such that the electrical conductivity of the electrically conductive path changes over time with the input signal not being present.
    Type: Application
    Filed: January 27, 2022
    Publication date: April 18, 2024
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, TOKYO UNIVERSITY OF SCIENCE FOUNDATION, TOYOTA PHYSICAL AND CHEMICAL RESEARCH INSTITUTE, NATIONAL UNIVERSITY CORPORATION TOTTORI UNIVERSITY, NAGASE & CO., LTD.
    Inventors: Hiroyuki AKINAGA, Hisashi SHIMA, Yasuhisa NAITOH, Hiroshi SATOU, Dan SATOU, Takuma MATSUO, Kentaro KINOSHITA, Toshiyuki ITOH, Toshiki NOKAMI, Masakazu KOBAYASHI
  • Patent number: 11508836
    Abstract: A semiconductor device includes a semiconductor substrate, multiple trench gate structures and an emitter region. The semiconductor substrate includes: a drift layer of a first conductivity type; a base layer of a second conductivity type disposed on the drift layer; and a collector layer of the second conductivity type, the collector layer disposed at a position opposite to the base layer with the drift layer sandwiched between the base layer and the collector layer. Each of the trench gate structures includes: a trench penetrating the base layer and reaching the drift layer; a gate insulation film is disposed at a wall surface of the trench; and a gate electrode disposed on the gate insulation film. The emitter region is disposed on a surface layer portion of the base layer and is in contact with the trench.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: November 22, 2022
    Assignee: DENSO CORPORATION
    Inventors: Masakazu Itoh, Hiroki Sakane
  • Publication number: 20200312986
    Abstract: A semiconductor device includes a semiconductor substrate, multiple trench gate structures and an emitter region. The semiconductor substrate includes: a drift layer of a first conductivity type; a base layer of a second conductivity type disposed on the drift layer; and a collector layer of the second conductivity type, the collector layer disposed at a position opposite to the base layer with the drift layer sandwiched between the base layer and the collector layer. Each of the trench gate structures includes: a trench penetrating the base layer and reaching the drift layer; a gate insulation film is disposed at a wall surface of the trench; and a gate electrode disposed on the gate insulation film. The emitter region is disposed on a surface layer portion of the base layer and is in contact with the trench.
    Type: Application
    Filed: April 30, 2020
    Publication date: October 1, 2020
    Inventors: Masakazu ITOH, Hiroki SAKANE
  • Patent number: 10748822
    Abstract: A method for manufacturing a semiconductor device having a trench gate structure is provided. In the method, a first voltage-current characteristic indicating a relation between the main current and the gate voltage under a first temperature is measured to calculate a first threshold voltage. A second voltage-current characteristic indicating a relation between the main current and the gate voltage under a second temperature different from the first temperature is measured to calculate a second threshold voltage. It is determined whether the semiconductor device is a non-defective product or a defective product based on whether a difference between the second threshold voltage and the first threshold voltage is larger than a determination threshold value.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: August 18, 2020
    Assignee: DENSO CORPORATION
    Inventors: Takaaki Aoki, Masakazu Itoh
  • Publication number: 20190333827
    Abstract: A method for manufacturing a semiconductor device having a trench gate structure is provided. In the method, a first voltage-current characteristic indicating a relation between the main current and the gate voltage under a first temperature is measured to calculate a first threshold voltage. A second voltage-current characteristic indicating a relation between the main current and the gate voltage under a second temperature different from the first temperature is measured to calculate a second threshold voltage. It is determined whether the semiconductor device is a non-defective product or a defective product based on whether a difference between the second threshold voltage and the first threshold voltage is larger than a determination threshold value.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 31, 2019
    Inventors: Takaaki AOKI, Masakazu ITOH
  • Publication number: 20080065497
    Abstract: A sales processing method for storing an order received from a customer in a storage as a pending order, recalling the pending order from the storage to display the pending order when payment is made, and executing checkout processing to book the pending order as sales data, includes: when the pending order is stored, storing information identifying a person-in-charge associated with the pending order in the storage in association with the pending order; and, when an instruction to execute processing of the pending order stored in the pending data storage is issued, determining whether or not an operator who has issued the instruction to execute the processing matches the person-in-charge associated with the pending order and, if the operator matches the person-in-charge, enabling execution of the processing.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 13, 2008
    Applicant: NEC INFRONTIA CORPORATION
    Inventor: Masakazu Itoh
  • Patent number: 6597310
    Abstract: A collection/delivery work support system which can eliminate erroneous delivery of goods, missing delivery and missing collection in collection/delivery service to greatly improve the efficiency of collection of goods. A collection/delivery navigation system for determining and indicating a route for delivery and collection of goods and managing collection and delivery conditions has an electronic slip which stores information described in a slip of a commodity and has a function of transmitting the stored information in response to an external request for information, and a navigation unit for indicating a route for collection and delivery of goods and collection and delivery conditions.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: July 22, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masakazu Itoh, Manabu Miyatake
  • Publication number: 20020044084
    Abstract: A collection/delivery work support system which can eliminate erroneous delivery of goods, missing delivery and missing collection in collection/delivery service to greatly improve the efficiency of collection of goods. A collection/delivery navigation system for determining and indicating a route for delivery and collection of goods and managing collection and delivery conditions has an electronic slip which stores information described in a slip of a commodity and has a function of transmitting the stored information in response to an external request for information, and a navigation unit for indicating a route for collection and delivery of goods and collection and delivery conditions.
    Type: Application
    Filed: November 19, 2001
    Publication date: April 18, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Masakazu Itoh, Manabu Miyatake
  • Patent number: 6335702
    Abstract: A collection/delivery work support system which can eliminate erroneous delivery of goods, missing delivery and missing collection in collection/delivery service to greatly improve the efficiency of collection of goods. A collection/delivery navigation system for determining and indicating a route for delivery and collection of goods and managing collection and delivery conditions has an electronic slip which stores information described in a slip of a commodity and has a function of transmitting the stored information in response to an external request for information, and a navigation unit for indicating a route for collection and delivery of goods and collection and delivery conditions.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: January 1, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masakazu Itoh, Manabu Miyatake
  • Patent number: 5543460
    Abstract: Graft copolymer particles obtained by graft-polymerizing one or more kinds of vinyl monomer onto a compound rubber comprising a polyorganosiloxane component and an alkyl (meth)acrylate rubber component, which graft copolymer particle has a number average particle size of 0.01 to 0.07 .mu.m, the volume of particles larger than 0.10 .mu.m being 20% or less of the whole particle volume, a method for producing the above graft copolymer particle, wherein one or more kinds of vinyl monomer are graft-polymerized onto a compound rubber obtained by polymerizing an alkyl (meth)acrylate rubber component comprising alkyl (meth)acrylate and a polyfunctional alkyl (meth)acrylate with a polyorganosiloxane having a number average particle size of 0.003 to 0.06 .mu.m, the volume of particles larger than 0.10 .mu.m being 20% or less of the whole particle volume, and thermoplastic resin compositions comprising the above graft copolymer and various thermoplastic resins.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 6, 1996
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Naoki Yamamoto, Akira Yanagase, Tadashi Iwasaki, Masakazu Itoh
  • Patent number: 5219932
    Abstract: A thermoplastic resin comprises a graft copolymer obtained by graft-polymerizing one or more kinds of vinyl monomer onto a compound rubber, wherein that compound rubber is obtained by inseparably entangling a polyalkyl(meth)acrylate rubber and a modified polyorganosiloxane rubber, the modification being obtained by radical polymerization of 1 to 15 parts by weight of at least one monomer selected from the group consisting of a polyfunctional unsaturated compound having at least one (meth) acryloyloxy group and a polyfunctional unsaturated compound having a cyanuric acid or isocyanuric acid skeleton in the presence of a polyorganosiloxane rubber.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: June 15, 1993
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Naoki Yamamoto, Akira Yanagase, Tadashi Iwasaki, Masakazu Itoh
  • Patent number: 5184848
    Abstract: This invention relates to a transparent hologram calendar (1) to be bonded onto the surface of an article and peeled after a passage of a predetermined period, comprising a transparent or translucent hologram formation layer (11) formed by recording calendar information as a hologram image (1a) capable of reproducing a visible image by white light and a tackifier layer (15) formed on one of the surfaces of the hologram formation layer (11) and having both bonding characteristics sufficient to bond the calendar to the surface of the article and re-peel characteristics sufficient to peel the calendar easily after the passage of a predetermined period.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: February 9, 1993
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Masakazu Itoh, Satoshi Yamazaki