Patents by Inventor John Fellert

John Fellert 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).

  • Finishing mortar for sound-absorbing coating of inner walls, ceilings and the like in buildings
    Patent number: 6379454
    Abstract: The invention relates to a finishing mortar for sound-absorbing coating of inner walls, ceilings and the like in buildings. It may be applied directly on concrete or some other carrying material or on underlying insulation material, such as mineral wool. The finishing mortar according to the invention is characterized in that it comprises cotton fibres and expanded mineral, such as perlite.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: April 30, 2002
    Inventor: John Fellert