Patents Assigned to NGK Insulators, LTS.
  • Ceramic-made filter and process for production thereof
    Patent number: 6837911
    Abstract: A ceramic-made filter for capturing the particulates present in the exhaust gas discharged from diesel engines, wherein a ceramic particles layer made of heat-resistant ceramic particles is formed on a filter by coating, the heat-resistant ceramic particles having a BET specific surface area of 300 m2/g or less. In this ceramic-made filter, the melting of the filter caused by the ash remaining and accumulating after the particulates captured by the filter have been burnt, can be prevented easily without using a large system or the like.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: January 4, 2005
    Assignee: NGK Insulators, LTS.
    Inventors: Naomi Noda, Kanji Yamada, Yoshiyuki Kasai