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).
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Publication number: 20240127982Abstract: 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: ApplicationFiled: January 27, 2022Publication date: April 18, 2024Applicants: 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
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Patent number: 11508836Abstract: 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: GrantFiled: April 30, 2020Date of Patent: November 22, 2022Assignee: DENSO CORPORATIONInventors: Masakazu Itoh, Hiroki Sakane
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Publication number: 20200312986Abstract: 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: ApplicationFiled: April 30, 2020Publication date: October 1, 2020Inventors: Masakazu ITOH, Hiroki SAKANE
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Patent number: 10748822Abstract: 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: GrantFiled: July 10, 2019Date of Patent: August 18, 2020Assignee: DENSO CORPORATIONInventors: Takaaki Aoki, Masakazu Itoh
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Publication number: 20190333827Abstract: 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: ApplicationFiled: July 10, 2019Publication date: October 31, 2019Inventors: Takaaki AOKI, Masakazu ITOH
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Publication number: 20080065497Abstract: 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: ApplicationFiled: September 6, 2007Publication date: March 13, 2008Applicant: NEC INFRONTIA CORPORATIONInventor: Masakazu Itoh
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Patent number: 6597310Abstract: 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: GrantFiled: November 19, 2001Date of Patent: July 22, 2003Assignee: Hitachi, Ltd.Inventors: Masakazu Itoh, Manabu Miyatake
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Publication number: 20020044084Abstract: 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: ApplicationFiled: November 19, 2001Publication date: April 18, 2002Applicant: Hitachi, Ltd.Inventors: Masakazu Itoh, Manabu Miyatake
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Patent number: 6335702Abstract: 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: GrantFiled: April 8, 1998Date of Patent: January 1, 2002Assignee: Hitachi, Ltd.Inventors: Masakazu Itoh, Manabu Miyatake
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Patent number: 5543460Abstract: 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: GrantFiled: June 5, 1995Date of Patent: August 6, 1996Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Naoki Yamamoto, Akira Yanagase, Tadashi Iwasaki, Masakazu Itoh
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Patent number: 5219932Abstract: 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: GrantFiled: October 30, 1991Date of Patent: June 15, 1993Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Naoki Yamamoto, Akira Yanagase, Tadashi Iwasaki, Masakazu Itoh
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Patent number: 5184848Abstract: 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: GrantFiled: June 13, 1991Date of Patent: February 9, 1993Assignee: Dai Nippon Insatsu Kabushiki KaishaInventors: Masakazu Itoh, Satoshi Yamazaki