Patents by Inventor Andreas Hegen

Andreas Hegen 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).

  • DEVICE FOR PROTECTING AN ELECTRODE SEAL IN A REACTOR FOR THE DEPOSITION OF POLYCRYSTALLINE SILICON
    Publication number: 20160045886
    Abstract: Electrode support seals in a Siemens reactor for the deposition of polycrystalline silicon are protected against thermal stress and degradation, and shorting by falling fragments is prevented by shielding having a high resistivity and also a high thermal conductivity.
    Type: Application
    Filed: February 26, 2014
    Publication date: February 18, 2016
    Inventors: Heinz KRAUS, Andreas HEGEN, Christian KUTZA
  • Method for the nondestructive material testing of highly pure polycrystalline silicon
    Patent number: 7694568
    Abstract: Noncontaminating and nondestructive testing of a shaped polysilicon body for a material defect is accomplished by exposing the shaped polysilicon body to ultrasound waves, and the ultrasound waves are registered by an ultrasound receiver after they have passed through the shaped polysilicon body or reflected therein, so that material defects in the polysilicon are detected.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: April 13, 2010
    Assignee: Wacker Chemie AG
    Inventors: Andreas Hegen, Matthaeus Schantz, Bruno Lichtenegger
  • Method For The Nondestructive Material Testing Of Highly Pure Polycrystalline Silicon
    Publication number: 20080053232
    Abstract: Noncontaminating and nondestructive testing of a shaped polysilicon body for a material defect is accomplished by exposing the shaped polysilicon body to ultrasound waves, and the ultrasound waves are registered by an ultrasound receiver after they have passed through the shaped polysilicon body or reflected therein, so that material defects in the polysilicon are detected.
    Type: Application
    Filed: August 21, 2007
    Publication date: March 6, 2008
    Applicant: WACKER CHEMIE AG
    Inventors: Andreas Hegen, Matthaeus Schantz, Bruno Lichtenegger