Patents by Inventor Kinga A. Unocic

Kinga A. Unocic 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).

  • Patent number: 11364654
    Abstract: A method for indirect additive manufacturing of an object constructed of boron carbide, silicon carbide, and free silicon, comprising: (i) producing a porous preform constructed of boron carbide and silicon carbide by an indirect ceramic additive manufacturing (ICAM) process in which particles of a powder mixture become bonded together with an organic binder, wherein the powder mixture comprises: a) boron carbide particles, and b) silicon carbide particles, wherein at least 80 vol % of the silicon carbide particles are larger than the boron carbide particles; and wherein the boron carbide and silicon carbide particles are each included in an amount of 40-60 wt. % of the powder mixture, provided that the foregoing amounts sum to at least 95 wt. %; (ii) subjecting the porous preform to a temperature of 500-900° C. to volatilize the organic binder; and (iii) infiltrating molten silicon into pores of the porous preform to produce the object.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 21, 2022
    Assignee: UT-Battelle, LLC
    Inventors: Corson L. Cramer, Richard A. Lowden, Kinga A. Unocic, Jacob W. McMurray, Amelia M. Elliott
  • Patent number: 11193190
    Abstract: An air castable Fe-based stainless steel alloy comprises in weight % based on the total weight of the alloy 18-22% Cr, 15-22% Ni, 3-6% Al, 0.5-5% Mn, 0-3.5% W, 0-5% Cu, 0-2% Si, 1-2.5% Nb, 0.3-0.6% C balance Fe wherein, Cu+W+Si=0.5-10.5, and the alloy provides an oxidation resistance of 0.5<specific mass change<+2 mg/cm2 after 400 one hour cycles at 900° C. in 10% water vapor.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: December 7, 2021
    Assignee: UT-BATTELLE, LLC
    Inventors: Philip J Maziasz, Govindarajan Muralidharan, Bruce A. Pint, Kinga A. Unocic, Ying Yang
  • Publication number: 20200189145
    Abstract: A method for indirect additive manufacturing of an object constructed of boron carbide, silicon carbide, and free silicon, comprising: (i) producing a porous preform constructed of boron carbide and silicon carbide by an indirect ceramic additive manufacturing (ICAM) process in which particles of a powder mixture become bonded together with an organic binder, wherein the powder mixture comprises: a) boron carbide particles, and b) silicon carbide particles, wherein at least 80 vol % of the silicon carbide particles are larger than the boron carbide particles; and wherein the boron carbide and silicon carbide particles are each included in an amount of 40-60 wt. % of the powder mixture, provided that the foregoing amounts sum to at least 95 wt. %; (ii) subjecting the porous preform to a temperature of 500-900° C. to volatilize the organic binder; and (iii) infiltrating molten silicon into pores of the porous preform to produce the object.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 18, 2020
    Inventors: Corson L. Cramer, Richard A. Lowden, Kinga A. Unocic, Jacob W. McMurray, Amelia M. Elliott
  • Publication number: 20190330723
    Abstract: An air castable Fe-based stainless steel alloy comprises in weight % based on the total weight of the alloy 18-22% Cr, 15-22% Ni, 3-6% Al, 0.5-5% Mn, 0-3.5% W, 0-5% Cu, 0-2% Si, 1-2.5% Nb, 0.3-0.6% C balance Fe wherein, Cu+W+Si=0.5-10.5, and the alloy provides an oxidation resistance of 0.5<specific mass change<+2 mg/cm2 after 400 one hour cycles at 900° C. in 10% water vapor.
    Type: Application
    Filed: July 12, 2019
    Publication date: October 31, 2019
    Inventors: Philip J. Maziasz, Govindarajan Muralidharan, Bruce A. Pint, Kinga A. Unocic, Ying Yang
  • Publication number: 20190226065
    Abstract: An air castable Fe-based stainless steel alloy comprises in weight % based on the total weight of the alloy 18-22% Cr, 15-22% Ni, 3-6% Al, 0.5-5% Mn, 0-3.5% W, 0-5% Cu, 0-2% Si, 1-2.5% Nb, 0.3-0.5% C balance Fe wherein, Cu+W+Si=0.5-10.5, and the alloy provides an oxidation resistance of 0.5<specific mass change <+2 mg/cm2 after 400 one hour cycles at 900° C. in 10% water vapor.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 25, 2019
    Inventors: Philip J. Maziasz, Govindarajan Muralidharan, Bruce A. Pint, Kinga A. Unocic, Ying Yang