Patents by Inventor Katsushi Hamada

Katsushi Hamada 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).

  • Filtration apparatus
    Patent number: 6863184
    Abstract: There is provided a filtration apparatus superior in durability dispensing with an O ring otherwise employed to attach a bowl. The apparatus includes a housing head, a housing bowl detachably attached to the housing head and surrounding a cartridge filter circumferentially to define a channel wall, and clamping means exerting force to press the housing head and bowl against each other to clamp the head and bowl together. The housing head has a portion facing the housing bowl and having a sealing portion. The housing bowl has a sealing portion providing a seal when the clamping means exerts force to allow the sealing portion of the bowl to abut directly against the sealing portion of the head.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: March 8, 2005
    Assignee: Kurabo Industries Ltd.
    Inventors: Masao Ochi, Katsushi Hamada
  • Filtration Apparatus
    Publication number: 20020066697
    Abstract: There is provided a filtration apparatus superior in durability dispensing with an O ring otherwise employed to attach a bowl. The apparatus includes a housing head, a housing bowl detachably attached to the housing head and surrounding a cartridge filter circumferentially to define a channel wall, and clamping means exerting force to press the housing head and bowl against each other to clamp the head and bowl together. The housing head has a portion facing the housing bowl and having a sealing portion. The housing bowl has a sealing portion providing a seal when the clamping means exerts force to allow the sealing portion of the bowl to abut directly against the sealing portion of the head.
    Type: Application
    Filed: November 28, 2001
    Publication date: June 6, 2002
    Applicant: KURABO INDUSTRIES LTD.
    Inventors: Masao Ochi, Katsushi Hamada