Patents by Inventor Steffen Jan Niehaus

Steffen Jan Niehaus 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).

  • METHOD FOR PRODUCING CORE/SHELL NANOPARTICLES AND CORE/SHELL NANOPARTICLES
    Publication number: 20190165211
    Abstract: The present invention relates to a process for the continuous preparation of core-shell nanoparticles, comprising a core of a core material, preferably of a semiconductor material, and a shell of a shell material, preferably of a semiconductor material, wherein selected starling materials for the shell material are mixed with a dispersion of nanoparticles of the core material and are passed continuously through a reaction zone of a tubular reactor, and other starting materials for the shell material are fed to the reaction zone of the tubular reactor at two or more locations, preferably via a tubular membrane, and the starting materials for the shell material react in the reaction zone to form a shell around the nanoparticles of the core material. The invention also relates to the tubular reactor with the membrane and its use for the continuous synthesis of core-shell nanoparticles.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 30, 2019
    Applicant: Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V.
    Inventors: Van Huong Schmidtke-Tran, Steffen Jan Niehaus, Horst Weller, Daniel Ness
  • Method for producing core/shell nanoparticles and core/shell nanoparticles
    Patent number: 10147846
    Abstract: The present invention relates to a process for the continuous preparation of core-shell nanoparticles, comprising a core of a core material, preferably of a semiconductor material, and a shell of a shell material, preferably of a semiconductor material, wherein selected starting materials for the shell material are mixed with a dispersion of nanoparticles of the core material and are passed continuously through a reaction zone of a tubular reactor, and other starting materials for the shell material are fed to the reaction zone of the tubular reactor at two or more locations, preferably via a tubular membrane, and the starting materials for the shell material react in the reaction zone to form a shell around the nanoparticles of the core material. The invention also relates to the tubular reactor with the membrane and its use for the continuous synthesis of core-shell nanoparticles.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: December 4, 2018
    Assignee: Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V.
    Inventors: Van Huong Schmidtke-Tran, Steffen Jan Niehaus, Horst Weller, Daniel Ness
  • METHOD FOR PRODUCING CORE/SHELL NANOPARTICLES AND CORE/SHELL NANOPARTICLES
    Publication number: 20150214433
    Abstract: The present invention relates to a process for the continuous preparation of core-shell nanoparticles, comprising a core of a core material, preferably of a semiconductor material, and a shell of a shell material, preferably of a semiconductor material, wherein selected starting materials for the shell material are mixed with a dispersion of nanoparticles of the core material and are passed continuously through a reaction zone of a tubular reactor, and other starting materials for the shell material are fed to the reaction zone of the tubular reactor at two or more locations, preferably via a tubular membrane, and the starting materials for the shell material react in the reaction zone to form a shell around the nanoparticles of the core material. The invention also relates to the tubular reactor with the membrane and its use for the continuous synthesis of core-shell nanoparticles.
    Type: Application
    Filed: August 29, 2013
    Publication date: July 30, 2015
    Applicant: Centrum Fur Angewandte Nanotechnologie (CAN) GMBH
    Inventors: Van Huong Tran, Steffen Jan Niehaus, Horst Weller, Daniel Ness