Patents by Inventor August Leins

August Leins 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).

  • All-ceramic drill bit
    Patent number: 5641251
    Abstract: Disclosed is an all-ceramic drill bit which combines the positive properties of ceramic with a tool geometry adapted to the special features of the material. The drill bit is formed with a groove for the shavings which extends in the axial direction linearly along a surface line.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: June 24, 1997
    Assignee: Cerasiv GmbH Innovatives Keramik-Engineering
    Inventors: August Leins, Rolf Muller