Patents by Inventor Ryohei Furuichi

Ryohei Furuichi 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).

  • Respiratory protection device
    Patent number: 9901758
    Abstract: A respiratory protection device is provided that allows the wearers of a facepiece to smoothly have a conversation with each other. A respiratory protection device includes a facepiece. The protection device also includes a voice amplifier that includes a microphone and a speaker therein, a detection unit that directly or indirectly detects the inner pressure of the facepiece, a power source unit, and a control unit. The control unit controls so as to place the voice amplifier in an operational state or a non-operational state, based on a result of comparison of information from the detection unit with a determination reference in the control unit.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: February 27, 2018
    Assignee: KOKEN LTD.
    Inventors: Ryohei Furuichi, Yu Ishikawa
  • RESPIRATORY PROTECTION DEVICE
    Publication number: 20150034080
    Abstract: A respiratory protection device is provided that allows the wearers of a facepiece to smoothly have a conversation with each other. A respiratory protection device includes a facepiece. The protection device also includes a voice amplifier that includes a microphone and a speaker therein, a detection unit that directly or indirectly detects the inner pressure of the facepiece, a power source unit, and a control unit. The control unit controls so as to place the voice amplifier in an operational state or a non-operational state, based on a result of comparison of information from the detection unit with a determination reference in the control unit.
    Type: Application
    Filed: February 21, 2013
    Publication date: February 5, 2015
    Inventors: Ryohei Furuichi, Yu Ishikawa