Patents by Inventor Andreas Otto Rapp

Andreas Otto Rapp 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).

  • Wood treatment process
    Patent number: 6217939
    Abstract: A wood treatment process in which lignocellulosic materials are treated for several hours in a liquid bath of oil with the exclusion of oxygen. The liquid bath at that time has a temperature of 180 to 260° C. By thermal action the wood substance is converted, so that some properties of these materials are altered. Resistance against wood-destroying fungi, for example, is improved.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: April 17, 2001
    Assignee: Martin Menz
    Inventors: Michael Sailer, Andreas Otto Rapp