Patents Assigned to Hokushin Industries, Inc.
  • Patent number: 5804149
    Abstract: Gas-cleaning equipment is disclosed, which comprises a housing having an intake vent and an exhaust vent and having disposed between the two vents a fan having at least one rotating blade. Air pollutant-removing system using the gas-cleaning equipment is also disclosed. This gas-cleaning equipment can effectively clean a gas through the action of plasma produced by glow discharge caused by rotation of said fan. When a metal layer having a catalytic activity is fixed onto the surface of said rotating blade, this metal layer also functions to effectively clean the gas. In the case where both the plasma and the metal layer function to clean the gas, there car be obtained synergistic effects. Cleaning of the gas can be conducted with more efficiency by bringing the intake gas into contact with the fan in an oxygen-free state. A magnet provided as an outer wall of the housing serves to generate plasma with higher density, leading to more effective cleaning of the gas.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: September 8, 1998
    Assignees: Hokushin Industries, Inc., Fujitsu Limited
    Inventors: Hiroaki Ota, Daihei Kobayashi, Takeshi Yanobe, Fujio Sakamoto, Yuji Hayashi
  • Patent number: 5492678
    Abstract: Gas-cleaning equipment is disclosed, which comprises a housing having an intake vent and an exhaust vent and having disposed between the two vents a fan having at least one rotating blade. Air pollutant-removing system using the gas-cleaning equipment is also disclosed. This gas-cleaning equipment can effectively clean a gas through the action of plasma produced by glow discharge caused by rotation of said fan. When a metal layer having a catalytic activity is fixed onto the surface of said rotating blade, this metal layer also functions to effectively clean the gas. In the case where both the plasma and the metal layer function to clean the gas, there can be obtained synergistic effects. Cleaning of the gas can be conducted with more efficiency by bringing the intake gas into contact with the fan in an oxygen-free state. A magnet provided as an outer wall of the housing serves to generate plasma with higher density, leading to more effective cleaning of the gas.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: February 20, 1996
    Assignees: Hokushin Industries, Inc., Fujitsu Limited
    Inventors: Hiroaki Ota, Daihei Kobayashi, Takeshi Yanobe, Fujio Sakamoto, Yuji Hayashi