Patents by Inventor Robert Holl

Robert Holl 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).

  • Hardness testing device and method for adjusting the hardness testing device
    Patent number: 8783096
    Abstract: A hardness testing device has at least one penetrator (9), arranged on a holder (15), for producing an impression (27) in an object under test (3) and at least one lens (12) for detecting at least one measure of the impression (27) in the object under test (3), which can be positioned alternately over the object under test (3). The holder (15) is mounted on the hardness testing device (6) in such a way as to be able to rotate around its longitudinal axis.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: July 22, 2014
    Assignee: Qness GmbH
    Inventor: Robert Holl