Patents by Inventor Paivi Peltonen

Paivi Peltonen 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).

  • Multi-layer ceramic filter
    Patent number: 4981589
    Abstract: The invention concerns a filter construction in particular for suction driers. The filter construction comprises a first filter material layer (1) of a ceramic material, which is the first layer in relation to the flowing liquid, and a second filter material layer (2) of a ceramic material, connected with said first layer. The first filter material layer (1) acts as the filtering layer proper, and the second filter material layer (2) acts as a layer that supports the construction. The invention also concerns a method for the formation of the filter construction.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: January 1, 1991
    Assignee: Valmet Paper Machinery Inc.
    Inventors: Rolf Hindstrom, Paivi Peltonen