Patents by Inventor Ichirou Kumo

Ichirou Kumo 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).

  • Hollow fiber membrane module
    Publication number: 20070163942
    Abstract: A hollow fiber membrane module comprising a large number of hollow fiber membranes contained in a cylindrical case, wherein one end of each hollow fiber membrane, which is left open, is fixed to the cylindrical case, while the other ends of the hollow fiber membranes are divided into more than one small bundles, with the ends, contained in separate small bundles, being kept together and plugged.
    Type: Application
    Filed: August 31, 2006
    Publication date: July 19, 2007
    Inventors: Yuji Tanaka, Naoki Oka, Ichirou Kumo, Katsumi Yokogawa, Hiromitsu Kanamori, Kenji Sakai
  • Hollow-fiber membrane module
    Patent number: 7223339
    Abstract: This invention provides an inexpensive hollow-fiber membrane module that can prevent diaphragms from peeling or coming off from the cylindrical casing. The invention includes a hollow-fiber membrane module, comprising a cylindrical casing having an inlet port for the treating liquid at one end and an outlet port for the treating liquid at the other end, a hollow-fiber membrane bundle contained in the cylindrical casing, potting layers for fixing the hollow-fiber membrane bundle to the inner wall of the cylindrical casing at both the ends of the hollow-fiber membrane bundle, a header having an outlet port for the liquid undergoing treatment provided at one end of the cylindrical casing, and a header having an inlet port for the liquid undergoing treatment provided at the other end of the cylindrical casing, wherein baffle cylinders having slits extending in the direction at an angle to the axis of the cylindrical casing are fitted in the potting layers.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: May 29, 2007
    Assignee: Toray Industries, Inc.
    Inventors: Osamu Nakamatsu, Hiroshi Ohtani, Ichirou Kumo
  • Hollow-fiber membrane module
    Publication number: 20040074833
    Abstract: This invention provides an inexpensive hollow-fiber membrane module that can prevent diaphragms from peeling or coming off from the cylindrical casing. The invention includes a hollow-fiber membrane module, comprising a cylindrical casing having an inlet port for the treating liquid at one end and an outlet port for the treating liquid at the other end, a hollow-fiber membrane bundle contained in the cylindrical casing, potting layers for fixing the hollow-fiber membrane bundle to the inner wall of the cylindrical casing at both the ends of the hollow-fiber membrane bundle, a header having an outlet port for the liquid undergoing treatment provided at one end of the cylindrical casing, and a header having an inlet port for the liquid undergoing treatment provided at the other end of the cylindrical casing, wherein baffle cylinders having slits extending in the direction at an angle to the axis of the cylindrical casing are fitted in the potting layers.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 22, 2004
    Applicant: Toray Industries, Inc., a corporation of Japan
    Inventors: Osamu Nakamatsu, Hiroshi Ohtani, Ichirou Kumo