Patents by Inventor Klaus Littmann

Klaus Littmann 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).

  • Method for sealing porous building materials and building components
    Patent number: 6572927
    Abstract: A method for sealing porous building materials, using a polyurethane and/or epoxy resin based sealing composition. The composition can include a substance/substance mixture with a viscosity of less than 100 mPa·s at 12° C. which can be added to a porous building material. This substance/substance mixture can be based on an epoxy resin. This resin can chemically react once inside of a porous region of the building material to substantially fill the pore system.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: June 3, 2003
    Inventors: Gerd Pleyers, Klaus Littmann