Patents by Inventor Stefan Würthner

Stefan Würthner 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).

  • Laser beam welding method and molded components fabricated thereby
    Patent number: 9878490
    Abstract: The invention relates to a method for laser welding two plastic components A, B brought into contact at least in the joining area, wherein component B facing away from the laser radiation consists of a plastic matrix with a white pigmentation of 1.5 5-20 wt.-%, and component A facing the laser radiation, through which the laser beam passes in the welding process, exhibits a plastic matrix. For a given laser wavelength the travel distance of the laser beam through the component A measures at most 10 mm, and given a white pigmentation of the component A in wt.-%, the product of the travel distance of the laser 10 beam through the component A in mm and white pigmentation in wt.-% is less than 1.25, and the travel distance of the laser beam through the component A measures at most 1 mm.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: January 30, 2018
    Assignee: EMS-PATENT AG
    Inventors: Jens Butzke, Stefan Würthner, Nikolai Lamberts, Pierre Dübon, Sabine Bertram, Heinz Caviezel
  • LASER BEAM WELDING METHOD AND MOLDED COMPONENTS FABRICATED THEREBY
    Publication number: 20130022766
    Abstract: The invention relates to a method for laser welding two plastic components A, B brought into contact at least in the joining area, wherein component B facing away from the laser radiation consists of a plastic matrix with a white pigmentation of 1.5 5-20 wt.-%, and component A facing the laser radiation, through which the laser beam passes in the welding process, exhibits a plastic matrix. For a given laser wavelength the travel distance of the laser beam through the component A measures at most 10 mm, and given a white pigmentation of the component A in wt.-%, the product of the travel distance of the laser 10 beam through the component A in mm and white pigmentation in wt.-% is less than 1.25, and the travel distance of the laser beam through the component A measures at most 1 mm.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Applicant: EMS-PATENT AG
    Inventors: Jens BUTZKE, Stefan Würthner, Nikolai LAMBERTS, Pierre Dübon, Sabine BERTRAM, Heinz CAVIEZEL