Patents by Inventor Naoto Igarashi

Naoto Igarashi 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: 11326065
    Abstract: A versatile silicone resin reflective substrate which exhibits high reflectance of high luminance light from an LED light source over a wide wavelength from short wavelengths of approximately 340-500 nm, which include wavelengths from 380-400 nm near lower limit of the visible region, to longer wavelength in the infra-red region. The silicone resin reflective substrate has a reflective layer which contains a white inorganic filler powder dispersed in a three-dimensional cross linked silicone resin, the inorganic filler powder having a high reflective index than the silicone resin. The reflective layer is formed on a support body as a film, a solid, or a sheet. The silicone resin reflective substrate can be easily formed as a wiring substrate, a packaging case or the like, and can be manufactured at low cost and a high rate of production.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: May 10, 2022
    Assignee: ASAHI RUBBER INC.
    Inventors: Masutsugu Tasaki, Naoto Igarashi, Akira Ichikawa, Tsutomu Odaki, Maimi Yoshida
  • Publication number: 20210086262
    Abstract: A manufacturing facility of a sintered product according to one aspect of the present disclosure includes: a molding apparatus configured to press-mold raw material powder containing metal powder to fabricate powder compacts; a marking apparatus configured to mark a product ID including a serial number on each of the powder compacts; a batch processing apparatus configured to perform a predetermined batch process on intermediate materials which are the powder compacts or sintered articles of the powder compacts; a reader apparatus configured to read the product ID of each of the intermediate materials loaded in a batch case of the batch processing apparatus; and a server apparatus configured to communicate with the apparatuses. The server apparatus includes: a communication unit configured to receive a read value of the product ID from the reader apparatus; and a control unit configured to specify a load position of each of the intermediate materials in the batch case based on the received read value.
    Type: Application
    Filed: July 25, 2018
    Publication date: March 25, 2021
    Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
    Inventors: Hiroaki TERAI, Masayuki TAUCHI, Kenji NAWACHI, Naoto IGARASHI
  • Patent number: 10903700
    Abstract: A dust core included in an axial-gap rotary electric machine. The dust core includes a sector-shaped plate-like yoke portion, and a tooth portion integrated with the yoke portion and projecting from the yoke portion. Denoting one of surfaces of the yoke portion from which the tooth portion projects as a toothed surface, the toothed surface has a concave portion provided between a peripheral edge of the tooth portion and a peripheral edge of the yoke portion.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: January 26, 2021
    Assignees: SUMITOMO ELECTRIC SINTERED ALLOY, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Naoto Igarashi, Shinichi Hirono, Tomoyuki Ueno, Asako Watanabe
  • Publication number: 20200095430
    Abstract: A versatile silicone resin reflective substrate which exhibits high reflectance of high luminance light from an LED light source over a wide wavelength from short wavelengths of approximately 340-500 nm, which include wavelengths from 380-400 nm near lower limit of the visible region, to longer wavelength in the infra-red region. The silicone resin reflective substrate has a reflective layer which contains a white inorganic filler powder dispersed in a three-dimensional cross linked silicone resin, the inorganic filler powder having a high reflective index than the silicone resin. The reflective layer is formed on a support body as a film, a solid, or a sheet. The silicone resin reflective substrate can be easily formed as a wiring substrate, a packaging case or the like, and can be manufactured at low cost and a high rate of production.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 26, 2020
    Applicant: ASAHI RUBBER INC.
    Inventors: Masutsugu TASAKI, Naoto IGARASHI, Akira ICHIKAWA, Tsutomu ODAKI, Maimi YOSHIDA
  • Patent number: 10533094
    Abstract: A versatile silicone resin reflective substrate which exhibits high reflectance of high luminance light from an LED light source over a wide wavelength from short wavelengths of approximately 340-500 nm, which include wavelengths from 380-400 nm near lower limit of the visible region, to longer wavelength in the infra-red region. The silicone resin reflective substrate has a reflective layer which contains a white inorganic filler powder dispersed in a three-dimensional cross linked silicone resin, the inorganic filler powder having a high reflective index than the silicone resin. The reflective layer is formed on a support body as a film, a solid, or a sheet. The silicone resin reflective substrate can be easily formed as a wiring substrate, a packaging case or the like, and can be manufactured at low cost and a high rate of production.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: January 14, 2020
    Assignee: ASAHI RUBBER INC.
    Inventors: Masutsugu Tasaki, Naoto Igarashi, Akira Ichikawa, Tsutomu Odaki, Maimi Yoshida
  • Patent number: 10480859
    Abstract: A carrier-type heat-treatment apparatus including a furnace main body that includes heaters and a mesh belt that transports an object to be heat-treated into the furnace main body includes a gas pipe arranged inside the furnace main body, the gas pipe being configured to inject a gas into the furnace main body, in which a low-temperature zone and a high-temperature zone are provided inside the furnace main body with the gas, the low-temperature zone being provided on an entrance side of the furnace main body, the high-temperature zone being provided on an exit side of the furnace main body and having a temperature higher than the low-temperature zone.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: November 19, 2019
    Assignee: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
    Inventors: Hidehisa Hirato, Naoto Igarashi
  • Patent number: 10351713
    Abstract: There is provided an ink for white reflective film formation including: a liquid binder resin component containing a crosslinkable silicone liquid resin and crosslinkable silicone resin particles; and titanium oxide particles, the ink containing 10 to 500 parts by mass of the titanium oxide particles relative to a solid content of a total of 100 parts by mass in the liquid binder resin component.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: July 16, 2019
    Assignee: ASAHI RUBBER INC.
    Inventors: Masutsugu Tasaki, Naoto Igarashi
  • Publication number: 20190214860
    Abstract: A dust core included in an axial-gap rotary electric machine. The dust core includes a sector-shaped plate-like yoke portion, and a tooth portion integrated with the yoke portion and projecting from the yoke portion. Denoting one of surfaces of the yoke portion from which the tooth portion projects as a toothed surface, the toothed surface has a concave portion provided between a peripheral edge of the tooth portion and a peripheral edge of the yoke portion.
    Type: Application
    Filed: April 6, 2017
    Publication date: July 11, 2019
    Inventors: Naoto Igarashi, Shinichi Hirono, Tomoyuki Ueno, Asako Watanabe
  • Publication number: 20180250750
    Abstract: An iron base sintered alloy has a chemical composition including at least Fe, Cu and C, and a sintered structure including a residual austenite and a martensite. The sintered structure includes a precipitated Cu element that was dissolved in the martensite and that has been precipitated from the martensite. A method for manufacturing an iron base sintered alloy includes conducting a Cu precipitation treatment for a sintered alloy that has a chemical composition including at least Fe, Cu and C, and a sintered structure including a residual austenite and a martensite to precipitate Cu element dissolved in the martensite.
    Type: Application
    Filed: February 28, 2018
    Publication date: September 6, 2018
    Inventors: Ken MATSUBARA, Hirotake HAMAMATSU, Hiroshi OKADA, Akira IWASAKI, Junya ASAOKA, Masanori AIKI, Naoto IGARASHI, Terukazu TOKUOKA, Hiroaki TERAI, Yuki TSUKAMOTO, Senichi SUMI
  • Publication number: 20180079006
    Abstract: A heat-treating method for compact includes a compacting step of forming a compact by compacting a soft magnetic powder together with a compacting assistant, the soft magnetic powder being a collection of coated particles that are soft magnetic metal particles having a surface coated with an insulation coating, and a heat-treatment step of heat-treating the compact, the heat-treatment step including a first heat-treatment substep of performing heat treatment at a temperature in a decomposition temperature range of the compacting assistant, and a second heat-treatment substep of performing heat treatment at a temperature at which distortion of the soft magnetic powder in the compact is removed and which is higher than the temperature of the first heat treatment.
    Type: Application
    Filed: March 14, 2016
    Publication date: March 22, 2018
    Inventors: Naoto Igarashi, Hidehisa Hirato
  • Publication number: 20180051930
    Abstract: A carrier-type heat-treatment apparatus including a furnace main body that includes heaters and a mesh belt that transports an object to be heat-treated into the furnace main body includes a gas pipe arranged inside the furnace main body, the gas pipe being configured to inject a gas into the furnace main body, in which a low-temperature zone and a high-temperature zone are provided inside the furnace main body with the gas, the low-temperature zone being provided on an entrance side of the furnace main body, the high-temperature zone being provided on an exit side of the furnace main body and having a temperature higher than the low-temperature zone.
    Type: Application
    Filed: March 14, 2016
    Publication date: February 22, 2018
    Inventors: Hidehisa Hirato, Naoto Igarashi
  • Publication number: 20170267867
    Abstract: There is provided an ink for white reflective film formation including: a liquid binder resin component containing a crosslinkable silicone liquid resin and crosslinkable silicone resin particles; and titanium oxide particles, the ink containing 10 to 500 parts by mass of the titanium oxide particles relative to a solid content of a total of 100 parts by mass in the liquid binder resin component.
    Type: Application
    Filed: April 24, 2017
    Publication date: September 21, 2017
    Applicant: ASAHI RUBBER INC.
    Inventors: Masutsugu TASAKI, Naoto IGARASHI
  • Patent number: 9663664
    Abstract: There is provided an ink for white reflective film formation including: a liquid binder resin component containing a crosslinkable silicone liquid resin and crosslinkable silicone resin particles; and titanium oxide particles, the ink containing 10 to 500 parts by mass of the titanium oxide particles relative to a solid content of a total of 100 parts by mass in the liquid binder resin component.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: May 30, 2017
    Assignee: ASAHI RUBBER INC.
    Inventors: Masutsugu Tasaki, Naoto Igarashi
  • Publication number: 20170114226
    Abstract: A versatile silicone resin reflective substrate which exhibits high reflectance of high luminance light from an LED light source over a wide wavelength from short wavelengths of approximately 340-500 nm, which include wavelengths from 380-400 nm near lower limit of the visible region, to longer wavelength in the infra-red region. The silicone resin reflective substrate has a reflective layer which contains a white inorganic filler powder dispersed in a three-dimensional cross linked silicone resin, the inorganic filler powder having a high reflective index than the silicone resin. The reflective layer is formed on a support body as a film, a solid, or a sheet. The silicone resin reflective substrate can be easily formed as a wiring substrate, a packaging case or the like, and can be manufactured at low cost and a high rate of production.
    Type: Application
    Filed: January 5, 2017
    Publication date: April 27, 2017
    Applicant: ASAHI RUBBER INC.
    Inventors: Masutsugu TASAKI, Naoto IGARASHI, Akira ICHIKAWA, Tsutomu ODAKI, Maimi YOSHIDA
  • Patent number: 9574050
    Abstract: A versatile silicone resin reflective substrate which exhibits high reflectance of high luminance light from an LED light source over a wide wavelength from short wavelengths of approximately 340-500 nm, which include wavelengths from 380-400 nm near lower limit of the visible region, to longer wavelength in the infra-red region. The silicone resin reflective substrate has a reflective layer which contains a white inorganic filler powder dispersed in a three-dimensional cross linked silicone resin, the inorganic filler powder having a high reflective index than the silicone resin. The reflective layer is formed on a support body as a film, a solid, or a sheet. The silicone resin reflective substrate can be easily formed as a wiring substrate, a packaging case or the like, and can be manufactured at low cost and a high rate of production.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: February 21, 2017
    Assignee: ASAHI RUBBER INC.
    Inventors: Masutsugu Tasaki, Naoto Igarashi, Akira Ichikawa, Tsutomu Odaki, Maimi Yoshida
  • Publication number: 20150361270
    Abstract: There is provided an ink for white reflective film formation including: a liquid binder resin component containing a crosslinkable silicone liquid resin and crosslinkable silicone resin particles; and titanium oxide particles, the ink containing 10 to 500 parts by mass of the titanium oxide particles relative to a solid content of a total of 100 parts by mass in the liquid binder resin component.
    Type: Application
    Filed: February 26, 2014
    Publication date: December 17, 2015
    Applicant: ASAHI RUBBER INC.
    Inventors: Masutsugu TASAKI, Naoto IGARASHI
  • Patent number: 8758906
    Abstract: A soft magnetic material includes a plurality of composite magnetic particles. Each of the plurality of composite magnetic particles has: a metal magnetic particle including iron; a lower film surrounding the surface of the metal magnetic particle and including a nonferrous metal; and an insulating upper film surrounding the surface of the lower film and including at least one of oxygen and carbon. The nonferrous metal has an affinity with the at least one of oxygen and carbon included in the upper film that is larger than such affinity of iron; or the nonferrous metal has a diffusion coefficient with respect to the at least one of oxygen and carbon included in the upper film that is smaller than such diffusion coefficient of iron. This configuration provides desirable magnetic properties.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: June 24, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toru Maeda, Naoto Igarashi, Haruhisa Toyoda, Kazuhiro Hirose
  • Patent number: 8704258
    Abstract: A general-use white color reflecting material, and a process for production thereof are provided. The white color reflecting material, without troublesome surface treatment such as formation of a reflective layer by plating, is capable of reflecting a near-ultraviolet ray of a wavelength region of 380 nm or longer or a near-infrared ray sufficiently without light leakage; does not become yellow even when exposed to near-ultraviolet rays; has excellent lightfastness, heat resistance, and weatherability; has high mechanical strength and chemical stability; is capable of maintaining a high degree of whiteness; and is easily moldable at a low cost. Further a white color reflecting material used as an ink composition for producing the white color reflecting material in a film shape is also provided.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: April 22, 2014
    Assignee: Asahi Rubber Inc.
    Inventors: Masutsugu Tasaki, Naoto Igarashi, Tsutomu Odaki, Maimi Yoshida
  • Patent number: D841703
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: February 26, 2019
    Assignees: Sumitomo Electric Sintered Alloy, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Naoto Igarashi, Shinichi Hirono, Tomoyuki Ueno, Asako Watanabe
  • Patent number: D900174
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 27, 2020
    Assignees: Sumitomo Electric Sintered Alloy, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Naoto Igarashi, Shinichi Hirono, Tomoyuki Ueno, Asako Watanabe