Patents by Inventor David J. Bronfenbrenner

David J. Bronfenbrenner 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).

  • Dimensional control of ceramic structures via composition
    Patent number: 9878958
    Abstract: Disclosed herein are methods for controlling and/or predicting the shrinkage and/or growth of a ceramic honeycomb structure between a green body state and a fired state by adjusting the hydrated alumina content of the batch composition. Also disclosed herein is substantially clay-free cordierite honeycombs produced in accordance with such methods.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: January 30, 2018
    Assignee: Corning Incorporated
    Inventors: David J Bronfenbrenner, Michael James Lehman
  • Single-fire two-step soak method
    Patent number: 9005517
    Abstract: A method for making a cordierite filter article, including: firing an extruded green body batch composition according to: a first temperature ramping from ambient temperature up to a first soaking temperature; a first soaking at a temperature of at least 1255° C. for at least 2 hours; a second temperature ramping from the first soak temperature down to a second soak temperature; and a second soaking at a temperature of at least 1250° C. and at least 5° C. below the first soaking temperature, as defined herein.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: April 14, 2015
    Assignee: Corning Incorporated
    Inventors: David J Bronfenbrenner, Lisa Larae Hepburn, Sriram Rangarajan Iyer, Lev Lvovitch Kuandykov, Dell Joseph St Julien, Elizabeth Ann White
  • Control of clay crystallite size for shrinkage management
    Patent number: 8765049
    Abstract: A method of making ceramic articles includes compounding ceramic precursor batch components that include hydrous clay. The hydrous clay includes particle components having a platy geometry. The crystallite size of the platy hydrous clay particle components is greater than a predetermined amount. Controlling such crystallite size can result in reduced shrinkage of green ware during the clay dehydroxylation stage of firing.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: July 1, 2014
    Assignee: Corning Incorporated
    Inventors: David J Bronfenbrenner, Chris Maxwell, Martin Joseph Murtagh, Bryan Ray Wheaton
  • Single-Fire Two-Step Soak Method
    Publication number: 20130307176
    Abstract: A method for making a cordierite filter article, including: firing an extruded green body batch composition according to: a first temperature ramping from ambient temperature up to a first soaking temperature; a first soaking at a temperature of at least 1255° C. for at least 2 hours; a second temperature ramping from the first soak temperature down to a second soak temperature; and a second soaking at a temperature of at least 1250° C. and at least 5° C. below the first soaking temperature, as defined herein.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 21, 2013
    Inventors: David J. Bronfenbrenner, Lisa Larae Hepburn, Sriram Rangarajan Iyer, Lev Lvovitch Kuandykov, Dell Joseph St Julien, Elizabeth Ann White
  • DIMENSIONAL CONTROL OF CERAMIC STRUCTURES VIA COMPOSITION
    Publication number: 20130224431
    Abstract: Disclosed herein are methods for controlling and/or predicting the shrinkage and/or growth of a ceramic honeycomb structure between a green body state and a fired state by adjusting the hydrated alumina content of the batch composition. Also disclosed herein is substantially clay-free cordierite honeycombs produced in accordance with such methods.
    Type: Application
    Filed: February 19, 2013
    Publication date: August 29, 2013
    Inventors: David J. Bronfenbrenner, Michael James Lehman
  • Control of Clay Crystallite Size for Shrinkage Management
    Publication number: 20130116110
    Abstract: A method of making ceramic articles includes compounding ceramic precursor batch components that include hydrous clay. The hydrous clay includes particle components having a platy geometry. The crystallite size of the platy hydrous clay particle components is greater than a predetermined amount. Controlling such crystallite size can result in reduced shrinkage of green ware during the clay dehydroxylation stage of firing.
    Type: Application
    Filed: April 30, 2012
    Publication date: May 9, 2013
    Inventors: David J. Bronfenbrenner, Chris Maxwell, Martin Joseph Murtagh, Bryan Ray Wheaton