Patents Assigned to Chang Yul Cha
  • Pollution arrestor
    Patent number: 5536477
    Abstract: A pollution arrestor removes various pollutants, such as soot, NO.sub.x, CO and hydrocarbons, from a gas stream. The pollution arrestor is composed in layers starting with a particulate filter to remove soot followed by various catalytic sections enhanced by radiofrequency microwave energy. The leaving gas is substantially reduced in pollution.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: July 16, 1996
    Assignee: Chang Yul Cha
    Inventors: Suk B. Cha, Chang Y. Cha