Patents by Inventor Jeff Kallman

Jeff Kallman 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).

  • Low loss, high and low index contrast waveguides in semiconductors
    Patent number: 7995892
    Abstract: A system in one general embodiment includes a waveguide structure comprising a core of an alloy of Group III-V materials surrounded by an oxide (which may include one or more Group III-V metals), wherein an interface of the oxide and core is characterized by oxidation of the alloy for defining the core. A method in one general approach includes oxidizing a waveguide structure comprising an alloy of Group III-V materials for forming a core of the alloy surrounded by an oxide.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: August 9, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Tiziana Bond, Garrett Cole, Lynford Goddard, Jeff Kallman
  • LOW LOSS, HIGH AND LOW INDEX CONTRAST WAVEGUIDES IN SEMICONDUCTORS
    Publication number: 20080298761
    Abstract: A system in one general embodiment includes a waveguide structure comprising a core of an alloy of Group III-V materials surrounded by an oxide (which may include one or more Group III-V metals), wherein an interface of the oxide and core is characterized by oxidation of the alloy for defining the core. A method in one general approach includes oxidizing a waveguide structure comprising an alloy of Group III-V materials for forming a core of the alloy surrounded by an oxide.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 4, 2008
    Inventors: Tiziana Bond, Garret Cole, Lynford Goddard, Jeff Kallman