Patents by Inventor Hasan Cakmak

Hasan Cakmak 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 crystalline nitride phosphors
    Patent number: 8455273
    Abstract: This invention relates to a new method for the production of nitride-based phosphors, in particular, of phosphors containing rare earth elements. The phosphors can be used, for example, in light sources, especially in Light Emitting Devices (LEDs).
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: June 4, 2013
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V.
    Inventors: Hasan Cakmak, Martin Jansen
  • Luminescent substances
    Patent number: 8357313
    Abstract: The invention relates to a new class of luminescent substances (phosphorous) based on an universally dopable matrix made of an amorphous, at the most partially crystalline network of the elements P, Si, B, Al and N, preferably the composition Si3B3N7. Optical excitation and emission can be varied in this system over the entire practically relevant field by incorporation of any cationic activators, alone or in combination, but also by incorporation of oxygen as anionic component. This opens up the entire spectrum of use of luminescent substances, such as illumination systems or electronic screens.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: January 22, 2013
    Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.
    Inventors: Martin Jansen, Hasan Cakmak
  • Production of Nitride-Based Phosphors
    Publication number: 20110163344
    Abstract: This invention relates to a new method for the production of nitride-based phosphors, in particular, of phosphors containing rare earth elements. The phosphors can be used, for example, in light sources, especially in Light Emitting Devices (LEDs).
    Type: Application
    Filed: September 15, 2009
    Publication date: July 7, 2011
    Inventors: Hasan Cakmak, Martin Jansen
  • Luminescent Substances
    Publication number: 20100012897
    Abstract: The invention relates to a new class of luminescent substances (phosphorous) based on an universally dopable matrix made of an amorphous, at the most partially crystalline network of the elements P, Si, B, Al and N, preferably the composition Si3B3N7. Optical excitation and emission can be varied in this system over the entire practically relevant field by incorporation of any cationic activators, alone or in combination, but also by incorporation of oxygen as anionic component. This opens up the entire spectrum of use of luminescent substances, such as illumination systems or electronic screens.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 21, 2010
    Applicant: MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN E.V.
    Inventors: Martin Jansen, Hasan Cakmak