Patents by Inventor Alexandra Navrotsky

Alexandra Navrotsky 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).

  • Semiconductor structures and methods of fabricating semiconductor structures comprising hafnium oxide modified with lanthanum, a lanthanide-series metal, or a combination thereof
    Patent number: 7141857
    Abstract: Semiconductor structures and processes for fabricating semiconductor structures comprising hafnium oxide layers modified with lanthanum oxide or a lanthanide-series metal oxide are provided. A semiconductor structure in accordance with an embodiment of the invention comprises an amorphous layer of hafnium oxide overlying a substrate. A lanthanum-containing dopant or a lanthanide-series metal-containing dopant is comprised within the amorphous layer of hafnium oxide. The process comprises growing an amorphous layer of hafnium oxide overlying a substrate. The amorphous layer of hafnium oxide is doped with a dopant having the chemical formulation LnOx, where Ln is lanthanum, a lanthanide-series metal, or a combination thereof, and X is any number greater than zero. The doping step may be performed during or after growth of the amorphous layer of hafnium oxide.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: November 28, 2006
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Zhiyi Yu, Jay A. Curless, Yong Liang, Alexandra Navrotsky, Sergey Ushakov, Bich-Yen Nguyen, Alexander Demkov
  • Methods for removing organic compounds from nano-composite materials
    Patent number: 6960327
    Abstract: The present invention provides methods for selectively removing organic compound from a nano-composite material which comprises the organic compound that is dispersed within a solid inorganic compound structure. In particular, methods of the present invention comprise irradiating the nano-composite material with electromagnetic radiation wavelength that is shorter than the wavelength of visible light.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: November 1, 2005
    Assignee: The Regents of the University of California
    Inventors: Alexandra Navrotsky, Atul Navinchandra Parikh
  • Methods for removing organic compounds from nano-composite materials
    Publication number: 20040151651
    Abstract: The present invention provides methods for selectively removing organic compound from a nano-composite material which comprises the organic compound that is dispersed within a solid inorganic compound structure. In particular, methods of the present invention comprise irradiating the nano-composite material with electromagnetic radiation wavelength that is shorter than the wavelength of visible light.
    Type: Application
    Filed: January 30, 2003
    Publication date: August 5, 2004
    Applicant: The Regents of the University of California
    Inventors: Alexandra Navrotsky, Atul Navinchandra Parikh