Patents by Inventor Georg Preiss

Georg Preiss 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).

  • Chip-removing machining method and apparatus for semiconducting crystals, specifically suited for the production of force and pressure measuring cells
    Patent number: 4165402
    Abstract: A method and apparatus for shaping semiconducting crystals for utilization in force and pressure measuring devices by chip removing machining of at least one surface portion of the crystal member. The shaping is effected by mounting the crystal member to be shaped and a ground cutting tool with respect to one another and rotating and contacting the tool and crystal member with respect to one another so as to remove a surface portion from the crystal. In this manner, many individual crystals can be shaped in an identical manner with high accuracy and with substantially no wear of the cutting tool.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: August 21, 1979
    Assignee: Kistler Instrumente AG
    Inventors: Walter Dubs, Georg Preiss