Patents by Inventor Kaj Lindblad

Kaj Lindblad 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).

  • Production method for multilayer filter material and multilayer filter material
    Patent number: 6355079
    Abstract: The present invention provides a unitary multi-layer filtering material and a method for producing a multi-layer filtering material. The multi-layer filtering material comprises at least one filtering layer formed by a dry forming technique and comprises natural fibers and/or plastic fibers and a binder material and/or binder fibers. The multi-layer filtering material further comprises at least one strengthening layer formed by a dry forming technique and comprises natural fibers and/or plastic fibers and binder material and/or binder fibers. The strengthening layer is airlaid onto either side of the filtering layer. The fibers of the filtering and strengthening layers are heat bonded to form a unity.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: March 12, 2002
    Assignee: BKI Holding Corporation
    Inventors: Juha Sorvari, Kaj Lindblad