Patents by Inventor Hans-Joachim Gretzschel

Hans-Joachim Gretzschel 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).

  • Patent number: 8201814
    Abstract: The invention relates to a device for catching a plurality of slices to be detached from a holding element, having a frame, a holder, attached to the frame, for accommodating the holding element holding the slices, at least two guiding elements on the sides and at least one bottom catching element, the guiding elements on the sides each being arranged on the frame in pairs on the right and the left.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: June 19, 2012
    Assignee: DEUTSCHE SOLAR GmbH
    Inventors: Jürgen Döpping, Matthias Reinecke, Holger Brosche, Hans-Joachim Gretzschel, Steffen Pollack
  • Patent number: 8168036
    Abstract: An apparatus and a method for the removal of pellicles from masks which can be used for photolithographic purposes. The pellicles are removed from masks in a universal manner without them being further contaminated or damaged. In an apparatus, at least one grip is present for the manipulation of masks provided with pellicles which has at least two fixing elements which engage at the edge of a mask with exerted pressure force. There are moreover present in this connection at least one detector for the contactless determination of the position of mounts formed at the radially outer edge of pellicles, and a heating device for the heating of an adhesive with which pellicles are fastened to a mask with material continuity, and a removal apparatus of the pellicles from a mask having a mask fixing unit and a pellicle removal unit.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: May 1, 2012
    Assignee: HAP Handhabungs-, Automatisierungs- und Präzisionstechnik GmbH
    Inventors: Lothar Andritzke, Holger Brosche, Steffen Krueger, Steffen Pollack, Klaus-Peter Weiss, Hans-Joachim Gretzschel
  • Patent number: 8123866
    Abstract: The invention relates to a device for manufacturing semiconductor material wafers with a sawing device for the sawing of slices attached to a saw holder, a pre-cleaning device arranged in the process direction downstream of the sawing device for pre-cleaning the surfaces of the slices hanging on the saw holder, and a degluing device arranged downstream in the process direction for detaching the slices from the saw holder.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: February 28, 2012
    Assignee: Deutsche Solar GmbH
    Inventors: Jürgen Döpping, Matthias Reinecke, Holger Brosche, Hans-Joachim Gretzschel, Steffen Pollack
  • Publication number: 20090239156
    Abstract: An apparatus and a method for the removal of pellicles from masks which can be used for photolithographic purposes. The pellicles are removed from masks in a universal manner without them being further contaminated or damaged. In an apparatus, at least one grip is present for the manipulation of masks provided with pellicles which has at least two fixing elements which engage at the edge of a mask with exerted pressure force. There are moreover present in this connection at least one detector for the contactless determination of the position of mounts formed at the radially outer edge of pellicles, and a heating device for the heating of an adhesive with which pellicles are fastened to a mask with material continuity, and a removal apparatus of the pellicles from a mask having a mask fixing unit and a pellicle removal unit.
    Type: Application
    Filed: December 9, 2008
    Publication date: September 24, 2009
    Inventors: Lothar Andritzke, Holger Brosche, Steffen Krueger, Steffen Pollack, Klaus-Peter Weiss, Hans-Joachim Gretzschel
  • Publication number: 20080295662
    Abstract: The invention relates to a device for catching a plurality of slices to be detached from a holding element, having a frame, a holder, attached to the frame, for accommodating the holding element holding the slices, at least two guiding elements on the sides and at least one bottom catching element, the guiding elements on the sides each being arranged on the frame in pairs on the right and the left.
    Type: Application
    Filed: November 5, 2007
    Publication date: December 4, 2008
    Inventors: Jurgen Dopping, Matthias Reinecke, Holger Brosche, Hans-Joachim Gretzschel, Steffen Pollack
  • Publication number: 20080105247
    Abstract: The invention relates to a device for manufacturing semiconductor material wafers with a sawing device for the sawing of slices attached to a saw holder, a pre-cleaning device arranged in the process direction downstream of the sawing device for pre-cleaning the surfaces of the slices hanging on the saw holder, and a degluing device arranged downstream in the process direction for detaching the slices from the saw holder.
    Type: Application
    Filed: November 5, 2007
    Publication date: May 8, 2008
    Inventors: Jurgen Dopping, Matthias Reinecke, Holger Brosche, Hans-Joachim Gretzschel, Steffen Pollack