Patents by Inventor Yuji Akazawa

Yuji Akazawa 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: 11993696
    Abstract: A method of producing a modified fibrous wollastonite is provided. The method includes hydrothermally treating a fibrous wollastonite.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: May 28, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Hideki Yoshida, Hirofumi Ooguri, Yuji Akazawa
  • Patent number: 11024776
    Abstract: A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: June 1, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Yuji Akazawa, Koichi Okada
  • Patent number: 10672955
    Abstract: A filling material for a resin composition includes a base material, a coating material coating at least a portion of a surface of a particle of the base material, and a light-reflective material disposed on the surface of the particle of the base material and supported by the coating material. The base material includes a first inorganic compound containing a Group II element. The coating material includes a second inorganic compound containing the Group II element. The second inorganic compound is different from the first inorganic compound. The light-reflective material includes a third inorganic compound having a refractive index higher than a refractive index of the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition including the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 2, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Yuji Akazawa, Koichi Okada
  • Publication number: 20190237632
    Abstract: A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.
    Type: Application
    Filed: April 9, 2019
    Publication date: August 1, 2019
    Applicant: NICHIA CORPORATION
    Inventors: Yuji AKAZAWA, Koichi OKADA
  • Patent number: 10297726
    Abstract: A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: May 21, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Yuji Akazawa, Koichi Okada
  • Publication number: 20190067528
    Abstract: A filling material for a resin composition includes a base material, a coating material coating at least a portion of a surface of a particle of the base material, and a light-reflective material disposed on the surface of the particle of the base material and supported by the coating material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element. The second inorganic compound is different from the first inorganic compound. The light-reflective material comprises a third inorganic compound having a refractive index higher than a refractive index of the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.
    Type: Application
    Filed: August 30, 2018
    Publication date: February 28, 2019
    Applicant: NICHIA CORPORATION
    Inventors: Yuji AKAZAWA, Koichi OKADA
  • Publication number: 20180340051
    Abstract: A method of producing a modified fibrous wollastonite is provided. The method includes hydrothermally treating a fibrous wollastonite.
    Type: Application
    Filed: May 24, 2018
    Publication date: November 29, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Hideki YOSHIDA, Hirofumi OOGURI, Yuji AKAZAWA
  • Publication number: 20180182930
    Abstract: A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 28, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Yuji AKAZAWA, Koichi OKADA
  • Patent number: 9401462
    Abstract: A light emitting device comprising: a base; a light emitting element arranged on a surface of the base; a first resin layer arranged to surround a side portion of the light emitting element and to be spaced apart from the side portion; and a second resin layer arranged on the surface of the base, the second resin layer being present at least on a top of the light emitting element, on a top of the first resin layer, and in an area between the light emitting element and the first resin layer, wherein the first resin layer comprises a light transmissive resin and a first fluorescent material, wherein the second resin layer comprises a light transmissive resin and a second fluorescent material, and wherein the second fluorescent material exhibits higher heat resistance than that of the first fluorescent material.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 26, 2016
    Assignee: NICHIA CORPORATION
    Inventor: Yuji Akazawa
  • Publication number: 20150189703
    Abstract: A light emitting device comprising: a base; a light emitting element arranged on a surface of the base; a first resin layer arranged to surround a side portion of the light emitting element and to be spaced apart from the side portion; and a second resin layer arranged on the surface of the base, the second resin layer being present at least on a top of the light emitting element, on a top of the first resin layer, and in an area between the light emitting element and the first resin layer, wherein the first resin layer comprises a light transmissive resin and a first fluorescent material, wherein the second resin layer comprises a light transmissive resin and a second fluorescent material, and wherein the second fluorescent material exhibits higher heat resistance than that of the first fluorescent material.
    Type: Application
    Filed: December 23, 2014
    Publication date: July 2, 2015
    Inventor: Yuji AKAZAWA
  • Patent number: 4413187
    Abstract: Disclosed is a method for exposing an electron beam of a beam-shaping type, wherein the electron beam can be shaped into polygon having desired size by passing through a first and a second apertures. The position of the first or the second aperture tends to be deviated from its design position due to heat, resulting in a deviation of the electron beam. According to the invention, the offset value of the real image formed on the second aperture, with respect to the ideal image, is automatically determined by detecting a current passing through the second aperture. During an electron-beam exposure for patterning, the amount of deflection of the electron beam is corrected by taking the previously obtained offset value into consideration.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: November 1, 1983
    Assignee: Fujitsu Limited
    Inventors: Yuji Akazawa, Toshihiko Osada, Takaharu Shima, Yuji Tanaka, Masayuki Hattori