Patents by Inventor Ryuta Shigematsu

Ryuta Shigematsu 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).

  • Diffuser
    Patent number: 11277684
    Abstract: A diffuser which forms a first acoustic passage that sound waves propagate and which radiates the sound waves to an outer diameter direction between a diaphragm and an annular conical surface of a first reflection member, and forms a second acoustic passage the sound waves which pass the opening of the first reflection member propagate and which radiates the sound waves to an outer diameter direction between the annular concave surface of the first reflection member and a conical surface of a second reflection member.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: March 15, 2022
    Assignee: Onkyo Corporation
    Inventors: Norimasa Kitagawa, Mitsuhiko Tokuda, Yoshinori Nakanishi, Ryuta Shigematsu, Koichi Sadaie, Yoshitada Takeshima
  • DIFFUSER
    Publication number: 20200236462
    Abstract: A diffuser which forms a first acoustic passage that sound waves propagate and which radiates the sound waves to an outer diameter direction between a diaphragm and an annular conical surface of a first reflection member, and forms a second acoustic passage the sound waves which pass the opening of the first reflection member propagate and which radiates the sound waves to an outer diameter direction between the annular concave surface of the first reflection member and a conical surface of a second reflection member.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 23, 2020
    Inventors: Norimasa KITAGAWA, Mitsuhiko TOKUDA, Yoshnori NAKANISHI, Ryuta SHIGEMATSU, Koichi SADAIE, Yoshitada TAKESHIMA
  • Amplifier
    Patent number: D766867
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: September 20, 2016
    Assignee: Onkyo Corporation
    Inventor: Ryuta Shigematsu