Patents by Inventor Chris Maxwell

Chris Maxwell 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).

  • 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
  • Cordierite-forming batch materials and methods of using the same
    Patent number: 8669199
    Abstract: The present disclosure relates to cordierite-forming batch materials and methods of using the same, and in particular batch materials for forming porous cordierite bodies suitable for treating engine emissions. The batch materials include sources of magnesium, alumina, silica, and high BET specific surface area raw kaolin clay. In some embodiments, the BET specific surface area of the raw kaolin clay is greater than 22 m2/g. In other embodiments, the BET specific surface area of the raw kaolin clay is greater than 13 m2/g, and the source of magnesium oxide and the source of non-kaolin clay source of silica both have relatively coarse particle size.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: March 11, 2014
    Assignee: Corning Incorporated
    Inventors: Chris Maxwell, Martin Joseph Murtagh
  • 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
  • Cordierite-Forming Batch Materials And Methods Of Using The Same
    Publication number: 20120071315
    Abstract: The present disclosure relates to cordierite-forming batch materials and methods of using the same, and in particular batch materials for forming porous cordierite bodies suitable for treating engine emissions. The batch materials include sources of magnesium, alumina, silica, and high BET specific surface area raw kaolin clay. In some embodiments, the BET specific surface area of the raw kaolin clay is greater than 22 m2/g. In other embodiments, the BET specific surface area of the raw kaolin clay is greater than 13 m2/g, and the source of magnesium oxide and the source of non-kaolin clay source of silica both have relatively coarse particle size.
    Type: Application
    Filed: June 5, 2009
    Publication date: March 22, 2012
    Inventors: Chris Maxwell, Martin Joseph Murtagh