Patents by Inventor Ryosuke KONDA

Ryosuke KONDA 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).

  • Fluoride phosphor and light-emitting device using same
    Patent number: 10982139
    Abstract: Provided is a fluoride phosphor that has a good external quantum efficiency and is suitable for stably producing white LEDs. The fluoride phosphor having a composition represented by a general formula (1), a bulk density of 0.80 g/cm3 or more, and a mass median diameter (D50) of 30 ?m or less: general formula: A2M(1-n)F6:Mn4+n (1), wherein 0<n?0.1, the element A is one or more alkali metal elements including at least K, and the element M is a simple substance of Si, a simple substance of Ge, or a combination of Si and one or more elements selected from the group consisting of Ge, Sn, Ti, Zr, and Hf.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: April 20, 2021
    Assignee: Denka Company Limited
    Inventors: Masayoshi Ichikawa, Ryosuke Konda, Hideyuki Emoto
  • Fluoride phosphor and light-emitting device using same
    Patent number: 10947450
    Abstract: Provided is a fluoride phosphor that has a good external quantum efficiency and is suitable for stably producing white LEDs. The fluoride phosphor having a composition represented by a general formula (1), a bulk density of 0.80 g/cm3 or more, and a mass median diameter (D50) of 30 ?m or less: general formula: A2M(1-n)F6:Mn4+n (1), wherein 0<n?0.1, the element A is one or more alkali metal elements including at least K, and the element M is a simple substance of Si, a simple substance of Ge, or a combination of Si and one or more elements selected from the group consisting of Ge, Sn, Ti, Zr, and Hf.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: March 16, 2021
    Assignee: Denka Company Limited
    Inventors: Masayoshi Ichikawa, Ryosuke Konda, Hideyuki Emoto
  • FLUORIDE PHOSPHOR AND LIGHT-EMITTING DEVICE USING SAME
    Publication number: 20200135983
    Abstract: Provided is a fluoride phosphor that has a good external quantum efficiency and is suitable for stably producing white LEDs. The fluoride phosphor has a composition represented by a general formula (1) and a repose angle of 30° or more and 60° or less. general formula: A2M(1-n)F6:Mn4+n (1), wherein 0<n?0.1, the element A is one or more alkali metal elements including at least K, and the element M is a simple substance of Si, a simple substance of Ge, or a combination of Si and one or more elements selected from the group consisting of Ge, Sn, Ti, Zr, and Hf.
    Type: Application
    Filed: June 12, 2018
    Publication date: April 30, 2020
    Applicant: Denka Company Limited
    Inventors: Masayoshi ICHIKAWA, Ryosuke KONDA, Hideyuki EMOTO
  • FLUORIDE PHOSPHOR AND LIGHT-EMITTING DEVICE USING SAME
    Publication number: 20200095501
    Abstract: Provided is a fluoride phosphor that has a good external quantum efficiency and is suitable for stably producing white LEDs. The fluoride phosphor having a composition represented by a general formula (1), a bulk density of 0.80 g/cm3 or more, and a mass median diameter (D50) of 30 ?m or less: general formula: A2M(1?n)F6:Mn4+n (1), wherein 0<n?0.1, the element A is one or more alkali metal elements including at least K, and the element M is a simple substance of Si, a simple substance of Ge, or a combination of Si and one or more elements selected from the group consisting of Ge, Sn, Ti, Zr, and Hf.
    Type: Application
    Filed: June 12, 2018
    Publication date: March 26, 2020
    Applicant: Denka Company Limited
    Inventors: Masayoshi ICHIKAWA, Ryosuke KONDA, Hideyuki EMOTO