Patents by Inventor Werner Liene

Werner Liene 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 of foam boards having improved sound insulation properties
    Patent number: 5520873
    Abstract: Foam boards are produced by aftertreating customary and known foam boards by compression by compressing foam boards having a density of from 17 to 30 kg/m.sup.3 to a maximum extent of from 60 to 90% of their original thickness, releasing the compression, and repeating this process at least once.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: May 28, 1996
    Assignee: BASF Aktiengesellschaft
    Inventor: Werner Liene