Patents by Inventor Christof Kriegshaber

Christof Kriegshaber 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).

  • Grinding disk
    Patent number: 4381188
    Abstract: An abrasive disk comprising abrasive grains such as corundum, a bonding material, for example a resin, and a filler material. At least part of the filler material is active in the grinding process.Particles of this filler material are provided in the disk in the form of pellets or granules. The pellets and granules preferably consist of more than one substance. One substance forms a matrix and at least one other substance is imbedded in said matrix.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: April 26, 1983
    Assignee: Tyrolit-Schleifmittelwerke Swarovski KG
    Inventors: Walter Waizer, Harald Helletsberger, Christof Kriegshaber, Volker Selgrad