Patents by Inventor William O. Charles

William O. Charles 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).

  • IV-VI AND III-V QUANTUM DOT STRUCTURES IN A V-VI MATRIX
    Publication number: 20150107640
    Abstract: A thermoelectric material and methods of manufacturing thereof are disclosed. In general, the thermoelectric material comprises a Group V-VI host, or matrix, material and Group III-V or Group IV-VI nanoinclusions within the Group V-VI host material. By incorporating the Group III-V or Group IV-VI nanoinclusions into the Group V-VI host material, the performance of the thermoelectric material can be improved.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Inventors: James Christopher Caylor, Ian Patrick Wellenius, William O. Charles, Pablo Cantu, Allen L. Gray
  • Highly power-efficient and broadband quantum cascade lasers
    Patent number: 8644358
    Abstract: The present invention relates generally to highly power-efficient quantum cascade sources, such as highly power-efficient quantum cascade lasers having ultra-strong coupling between injector and active regions which may be configured to provide broadband quantum cascade lasers.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 4, 2014
    Inventors: Qiang Liu, Yu Yao, Anthony J. Hoffman, Matthew Escarra, Kale J. Franz, Jacob Khurgin, Yamac Dikmelik, William O. Charles, Jianxin Chen, Claire F. Gmachl
  • Highly Power-efficient and Broadband Quantum Cascade Lasers
    Publication number: 20110080930
    Abstract: The present invention relates generally to highly power-efficient quantum cascade sources, such as highly power-efficient quantum cascade lasers having ultra-strong coupling between injector and active regions which may be configured to provide broadband quantum cascade lasers.
    Type: Application
    Filed: June 8, 2010
    Publication date: April 7, 2011
    Inventors: Qiang Liu, Yu Yao, Anthony J. Hoffman, Matthew Escarra, Kale J. Franz, Jacob Khurgin, Yamac Dikmelik, William O. Charles, Jianxin Chen, Claire F. Gmachl