Patents by Inventor Ottmar Bartels

Ottmar Bartels 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).

  • Contrast enhancing glass for sunglass lenses
    Patent number: 11485675
    Abstract: A glass composition, including contrast enhancing glass and contrast enhancing sunglass, having approximately 45-65 wt.-%, SiO2, 0-12 wt.-% B2O3, 0-15 wt.-%, Na2O, 0-10 wt.-% K2O, and 10 0-7 wt.-% ZnO, 1-12 wt.-% Nd2O3, 1-10 wt.-% Er2O3, 0.5-8 wt.-% Ho2O3, and 0.00-0.05 wt.-% NiO, and methods of making the same.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: November 1, 2022
    Assignee: Barberini GmbH
    Inventors: Antje Gawronski, Simon Striepe, Ottmar Bartels
  • CONTRAST ENHANCING GLASS FOR SUNGLASS LENSES
    Publication number: 20190322570
    Abstract: A glass composition, including contrast enhancing glass and contrast enhancing sunglass, having approximately 45-65 wt.-%, SiO2, 0-12 wt.-% B2O3, 0-15 wt.-%, Na2O, 0-10 wt.-% K2O, and 10 0-7 wt.-% ZnO, 1-12 wt.-% Nd2O3, 1-10 wt.-% Er2O3, 0.5-8 wt.-% Ho2O3, and 0.00-0.05 wt.-% NiO, and methods of making the same.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 24, 2019
    Inventors: Antje Gawronski, Simon Striepe, Ottmar Bartels