Patents by Inventor Hirohisa Maeda

Hirohisa Maeda 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).

  • Flow channel switching system and water cleaning system
    Patent number: 12209033
    Abstract: A flow channel switching system (1, 1?) including: a first on-off valve (10) which is disposed between a merging portion (6) and a branching portion (5) and in a raw water path (4); a second on-off valve (11) which is disposed in an outward path for raw water (7); and a sensor (13) that measures a state of water flowing through the raw water path, in which control is performed so as to open the second on-off valve and close the first on-off valve if a signal indicating that water is flowing in the raw water path is received from the sensor, then a signal indicating that no water is flowing in the raw water path is received, and then, within a predetermined time period, a signal indicating that water is flowing again in the raw water path is received.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: January 28, 2025
    Assignee: Toray Industries, Inc.
    Inventors: Takashi Narita, Toyohiko Mori, Takashi Isobe, Kimihiko Sugishima, Yasuhiro Sato, Hirohisa Maeda
  • FLOW CHANNEL SWITCHING SYSTEM AND WATER CLEANING SYSTEM
    Publication number: 20220396501
    Abstract: A flow channel switching system (1, 1?) including: a first on-off valve (10) which is disposed between a merging portion (6) and a branching portion (5) and in a raw water path (4); a second on-off valve (11) which is disposed in an outward path for raw water (7); and a sensor (13) that measures a state of water flowing through the raw water path, in which control is performed so as to open the second on-off valve and close the first on-off valve if a signal indicating that water is flowing in the raw water path is received from the sensor, then a signal indicating that no water is flowing in the raw water path is received, and then, within a predetermined time period, a signal indicating that water is flowing again in the raw water path is received.
    Type: Application
    Filed: November 4, 2020
    Publication date: December 15, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Takashi Narita, Toyohiko Mori, Takashi Isobe, Kimihiko Sugishima, Yasuhiro Sato, Hirohisa Maeda