Patents by Inventor Katsumi Yokogawa

Katsumi Yokogawa 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