Patents by Inventor Eizou Kawano

Eizou Kawano 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).

  • Filter medium for turbine and methods of using and producing the same
    Patent number: 6808553
    Abstract: The present invention is to provide a filter medium for a turbine in which contamination is less likely to be caused in the turbine, and an increase in pressure loss is suppressed. One form of this filter medium includes a porous polytetrafluoroethylene (PTFE) membrane and an air-permeable supporting member. The air-permeable supporting member has a fiber diameter of not more than 15 &mgr;m. This filter medium is used by disposing the air-permeable supporting member on an upstream side of the porous PTFE membrane with respect to air flow passing through the filter medium toward the turbine. Another form of the filter medium of the present invention includes a porous PTFE membrane, a first air-permeable supporting member, and a second air-permeable supporting member.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: October 26, 2004
    Assignee: Nitto Denko Corporation
    Inventors: Eizou Kawano, Takuya Maeoka
  • Filter medium for turbine and methods of using and producing the same
    Publication number: 20030010210
    Abstract: The present invention is to provide a filter medium for a turbine in which contamination is less likely to be caused in the turbine, and an increase in pressure loss is suppressed. One form of this filter medium includes a porous polytetrafluoroethylene (PTFE) membrane and an air-permeable supporting member. The air-permeable supporting member has a fiber diameter of not more than 15 &mgr;m. This filter medium is used by disposing the air-permeable supporting member on an upstream side of the porous PTFE membrane with respect to air flow passing through the filter medium toward the turbine. Another form of the filter medium of the present invention includes a porous PTFE membrane, a first air-permeable supporting member, and a second air-permeable supporting member.
    Type: Application
    Filed: June 12, 2002
    Publication date: January 16, 2003
    Inventors: Eizou Kawano, Takuya Maeoka
  • Air filter
    Patent number: D593189
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: May 26, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Eizou Kawano, Youzou Yano, Takashi Tagou, Akio Suzuki
  • Air filter
    Patent number: D605274
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: December 1, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Eizou Kawano, Youzou Yano, Takashi Tagou, Akio Suzuki
  • Air filter
    Patent number: D605275
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: December 1, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Eizou Kawano, Youzou Yano, Takashi Tagou, Akio Suzuki