Patents by Inventor Aimo Lehtimäki

Aimo Lehtimäki 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).

  • Honeycomb structure for a catalyst
    Patent number: 6258328
    Abstract: The present invention relates to a catalyst comprising a honeycomb (1) and a surrounding jacket, the honeycomb comprising a structure formed of a stack of metal sheets, of which at least part are profiled, and the honeycomb structure including several through-flow channels for gas. The free ends of the said metal sheets are distributed over a part (S1) of the honeycomb periphery unsymmetrically to the center of the honeycomb so that part (F1) of the honeycomb's periphery is free from the free ends of the metal sheets. The said honeycomb is attached either directly or through an intermediate layer to the said jacket over an area (L1) comprising at least part of the said free ends.
    Type: Grant
    Filed: August 29, 1998
    Date of Patent: July 10, 2001
    Assignee: Kemira Metalkat Oy
    Inventors: Keijo Torkkell, Aimo Lehtimäki, Timo Avikainen