Patents by Inventor Holger Marcus

Holger Marcus 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).

  • Apparatus for measuring the distance to a point on the inner wall of a hot furnace
    Patent number: 4508448
    Abstract: Apparatus is disclosed for measuring the distance to a point on the inner wall of a hot furnace.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: April 2, 1985
    Assignee: Geotronics AB
    Inventors: Ragnar Scholdstrom, Holger Marcus, Lennart Nordstrom
  • Apparatus for measuring the distance to a point on the inner wall of a hot furnace
    Patent number: 4227802
    Abstract: Apparatus is disclosed for measuring the distance to a point on the inner wall of a hot furnace.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: October 14, 1980
    Assignee: AGA Aktiebolag
    Inventors: Ragnar Scholdstrom, Holger Marcus, Lennart Nordstrom
  • Optical measuring method
    Patent number: 4172661
    Abstract: A method of making a series of measurements of the relative position of a point on the surface of an object in an object related coordinate system is disclosed. The object is turnable around an axle. The point, which moves between each measurement, is measured by an optical distance and angle measuring device which is placed each time in an arbitrary position in an earth-related coordinate system. The measurements of the position of said point are transformed from an earth related coordinate system to the object related coordinate system. By comparing the current measurement of the point with past measurements of the point, the wear on the surface of the object can be determined.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: October 30, 1979
    Assignee: AGA Aktiebolag
    Inventors: Holger Marcus, Lennart Nordstrom
  • Optical measuring method
    Patent number: 4025192
    Abstract: A method of measuring changes in the location of a physically inaccessible point on a surface is disclosed in which the surface may be moved relative to the measuring point between successive measurements.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: May 24, 1977
    Assignee: AGA Aktiebolag
    Inventors: Karl Ragnar Scholdstrom, Holger Marcus, Lennart Nordstrom, Nils Stahl