Patents by Inventor Jürgen SERBIN

Jürgen SERBIN 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).

  • Separation and release of laser-processed brittle material
    Patent number: 11524366
    Abstract: A method for separating and releasing a closed-form piece from a workpiece made of a brittle material is disclosed. A first pulsed laser-beam creates defects along the outline of the closed-form piece. A second laser-beam selectively heats the closed-form piece for a first time that is sufficient to initiate cracking between the defects. The heating is stopped for a period sufficiently long for the cracks to propagate completely between the defects. The second laser-beam is applied for a second time that causes melting and deformation of the closed-form piece. The deformation opens a gap between the closed-form piece and the rest of the workpiece, thereby allowing release of the closed-form piece.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: December 13, 2022
    Assignee: Coherent Munich GmbH & Co. KG
    Inventors: Stefan Groninger, Manfred Schadi, Ludger Müllers, Jürgen Serbin
  • SEPARATION AND RELEASE OF LASER-PROCESSED BRITTLE MATERIAL
    Publication number: 20200030917
    Abstract: A method for separating and releasing a closed-form piece from a workpiece made of a brittle material is disclosed. A first pulsed laser-beam creates defects along the outline of the closed-form piece. A second laser-beam selectively heats the closed-form piece for a first time that is sufficient to initiate cracking between the defects. The heating is stopped for a period sufficiently long for the cracks to propagate completely between the defects. The second laser-beam is applied for a second time that causes melting and deformation of the closed-form piece. The deformation opens a gap between the closed-form piece and the rest of the workpiece, thereby allowing release of the closed-form piece.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 30, 2020
    Applicant: Coherent Munich GmbH & Co. KG
    Inventors: Stefan GRONINGER, Manfred SCHADI, Ludger MÜLLERS, Jürgen SERBIN