Patents by Inventor Kathleen A. Thrush

Kathleen A. Thrush 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).

  • Silicate-based sintering aid and method
    Publication number: 20040248724
    Abstract: The present invention is directed to a silicate-based sintering aid and a method for producing the sintering aid. The sintering aid, or frit, may be added to dielectric compositions, including barium titanate-based compositions, to lower the sintering temperature. The sintering aid may be a single or multi-component silicate produced via a precipitation reaction by mixing solutions including silicon species and alkaline earth metal species. The sintering aid can be produced as nanometer-sized particles, or as coatings on the surfaces of pre-formed dielectric particles. Dielectric compositions that include the sintering aid may be used to form dielectric layers in MLCCs and, in particular, ultra-thin dielectric layers.
    Type: Application
    Filed: December 4, 2003
    Publication date: December 9, 2004
    Inventors: Sridhar Venigalla, David V. Miller, Jeffrey A. Kerchner, Kathleen A. Thrush
  • Coated barium titanate-based particles and process
    Patent number: 6656590
    Abstract: Coated barium titanate-based particles and a process to coat the particles are provided. The coating includes a dopant metal compound that is insoluble in water under alkaline conditions. The dopant metal in the coating is selected from the group of metals which form oxides or hydroxides that are soluble in water under alkaline conditions such as tungsten, molybdenum, vanadium, and chromium. The process involves precipitating the insoluble compound from an aqueous medium as a coating on surfaces of barium titanate-based particles. The coated barium titanate-based particles may be further processed, for example, to form dielectric materials which may be used in many electronic applications such as in MLCCs applications.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: December 2, 2003
    Assignee: Cabot Corporation
    Inventors: Sridhar Venigalla, Kathleen A. Thrush
  • Coated barium titanate-based particles and process
    Publication number: 20020091059
    Abstract: Coated barium titanate-based particles and a process to coat the particles are provided. The coating includes a dopant metal compound that is insoluble in water under alkaline conditions. The dopant metal in the coating is selected from the group of metals which form oxides or hydroxides that are soluble in water under alkaline conditions such as tungsten, molybdenum, vanadium, and chromium. The process involves precipitating the insoluble compound from an aqueous medium as a coating on surfaces of barium titanate-based particles. The coated barium titanate-based particles may be further processed, for example, to form dielectric materials which may be used in many electronic applications such as in MLCCs applications.
    Type: Application
    Filed: January 10, 2001
    Publication date: July 11, 2002
    Inventors: Sridhar Venigalla, Kathleen A. Thrush
  • Use of crystalline molecular sieves containing charged octahedral sites in removing volatile organic compounds from a mixture of the same
    Patent number: 5346535
    Abstract: Crystalline molecular sieves containing octahedral sites such as the sieves known as ETS-4, ETS-10 and ETAS-10 are used to remove volatile organic compounds from a mixture of the same with moist air at ambient temperature.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: September 13, 1994
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Dinh Dang, David T. Hayhurst, Kathleen A. Thrush
  • Large-pored molecular sieves with charged octahedral titanium and charged tetrahedral aluminum sites
    Patent number: 5244650
    Abstract: A crystalline-titanium-aluminum-silicate molecular sieve is disclosed having both di-charged octahedrally coordinated titanium and mono-charged tetrahedrally coordinated aluminum in its framework.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: September 14, 1993
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Kathleen A. Thrush
  • Large-pored molecular sieves containing at least one octahedral site comprising titanium and at least silicon as a tetrahedral site
    Patent number: 5208006
    Abstract: Crystalline molecular sieves having large pores are disclosed having at least one octahedrally coordinated site comprising titanium and at least tetrahedrally coordinated silicon in the framework.Conversion of organic compounds and removal of ions from solutions are also disclosed.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: May 4, 1993
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Kathleen A. Thrush
  • Removal of heavy metals, especially lead, from aqueous systems containing competing ions utilizing wide-pored molecular sieves of the ETS-10 type
    Patent number: 4994191
    Abstract: A process for the removal of heavy metals such as lead, cadmium, zinc, chromium, arsenic and mercury from aqueous solutions containing one or more of said metals as well as competing ions such as calcium and/or magnesium by contacting said aqueous solution with a crystalline molecular sieve having the X-ray diffraction patterns of ETS-10 or ETAS-10.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: February 19, 1991
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Kathleen A. Thrush