Patents by Inventor Tsunehito NIIMI

Tsunehito NIIMI 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).

  • Fluorescent material particles, method for producing the same, and light emitting device
    Patent number: 10899965
    Abstract: A fluorescent material particle including: a particle that contains a thiogallate phosphor and a first adherent member containing boron oxide and being disposed on the surface of the particle, a method for producing the fluorescent material particles, and a light emitting device are provided.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: January 26, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Tsunehito Niimi, Koji Kajikawa, Hirofumi Ooguri
  • Fluorescent material, method of producing same, and light emitting device
    Patent number: 10407615
    Abstract: Provided are a fluorescent material with excellent durability, which emits red light, a method of producing the same, and a light emitting device. The fluorescent material is a fluorescent material including a fluoride-containing fluorescent material core comprising Mn, at least one element selected from the group consisting of an alkali metal element and NH4+, and at least one element selected from the group consisting of a Group 4 element and a Group 14 element in a composition thereof; and at least one of an aluminum hydroxide particle and a calcium hydroxide particle as disposed on a surface of the fluorescent material core.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: September 10, 2019
    Assignee: NICHIA CORPORATION
    Inventor: Tsunehito Niimi
  • FLUORESCENT MATERIAL, METHOD OF PRODUCING SAME, AND LIGHT EMITTING DEVICE
    Publication number: 20180142147
    Abstract: Provided are a fluorescent material with excellent durability, which emits red light, a method of producing the same, and a light emitting device. The fluorescent material is a fluorescent material including a fluoride-containing fluorescent material core comprising Mn, at least one element selected from the group consisting of an alkali metal element and NH4+, and at least one element selected from the group consisting of a Group 4 element and a Group 14 element in a composition thereof; and at least one of an aluminum hydroxide particle and a calcium hydroxide particle as disposed on a surface of the fluorescent material core.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 24, 2018
    Applicant: NICHIA CORPORATION
    Inventor: Tsunehito NIIMI
  • FLUORESCENT MATERIAL PARTICLES, METHOD FOR PRODUCING THE SAME, AND LIGHT EMITTING DEVICE
    Publication number: 20160289555
    Abstract: A fluorescent material particle including: a particle that contains a thiogallate phosphor and a first adherent member containing boron oxide and being disposed on the surface of the particle, a method for producing the fluorescent material particles, and a light emitting device are provided.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Applicant: NICHIA CORPORATION
    Inventors: Tsunehito NIIMI, Koji KAJIKAWA, Hirofumi OOGURI