Patents by Inventor Craig Andrew Willkens

Craig Andrew Willkens 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).

  • HOT SURFACE IGNITERS AND METHODS OF MAKING SAME
    Publication number: 20210348760
    Abstract: A method of making a hot surface igniter is described. A silicon carbide composition that includes both fines fraction and a coarse fraction is sintered in a nitrogen and argon reducing atmosphere in a manner that controls the incorporation of nitrogen with in the lattice of recrystallized silicon carbide. The controlled incorporation of nitrogen in the lattice provides enhanced control over heating and electrical properties, while simultaneously achieving a lower surface area fully recrystallized structure for oxidation resistance and long service life.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 11, 2021
    Inventors: Craig Andrew Willkens, Frederick Taylor Fernandez
  • Hot surface igniters and methods of making same
    Patent number: 11098897
    Abstract: A method of making a hot surface igniter is described. A silicon carbide composition that includes both fines fraction and a coarse fraction is sintered in a nitrogen and argon reducing atmosphere in a manner that controls the incorporation of nitrogen with in the lattice of recrystallized silicon carbide. The controlled incorporation of nitrogen in the lattice provides enhanced control over heating and electrical properties, while simultaneously achieving a lower surface area fully recrystallized structure for oxidation resistance and long service life.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: August 24, 2021
    Assignee: Specialized Component Parts Limited, Inc.
    Inventors: Craig Andrew Willkens, Frederick Taylor Fernandez
  • HOT SURFACE IGNITERS AND METHODS OF MAKING SAME
    Publication number: 20180195721
    Abstract: A method of making a hot surface igniter is described. A silicon carbide composition that includes both fines fraction and a coarse fraction is sintered in a nitrogen and argon reducing atmosphere in a manner that controls the incorporation of nitrogen with in the lattice of recrystallized silicon carbide. The controlled incorporation of nitrogen in the lattice provides enhanced control over heating and electrical properties, while simultaneously achieving a lower surface area fully recrystallized structure for oxidation resistance and long service life.
    Type: Application
    Filed: March 9, 2018
    Publication date: July 12, 2018
    Inventors: Craig Andrew Willkens, Frederick Taylor Fernandez
  • Hot surface igniters and methods of making same
    Patent number: 9951952
    Abstract: A method of making a hot surface igniter is described. A silicon carbide composition that includes both fines fraction and a coarse fraction is sintered in a nitrogen and argon reducing atmosphere in a manner that controls the incorporation of nitrogen with in the lattice of recrystallized silicon carbide. The controlled incorporation of nitrogen in the lattice provides enhanced control over heating and electrical properties, while simultaneously achieving a lower surface area fully recrystallized structure for oxidation resistance and long service life.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: April 24, 2018
    Assignee: Specialized Component Parts Limited, Inc.
    Inventors: Craig Andrew Willkens, Frederick Taylor Fernandez
  • HOT SURFACE IGNITERS AND METHODS OF MAKING SAME
    Publication number: 20160109125
    Abstract: A method of making a hot surface igniter is described. A silicon carbide composition that includes both fines fraction and a coarse fraction is sintered in a nitrogen and argon reducing atmosphere in a manner that controls the incorporation of nitrogen with in the lattice of recrystallized silicon carbide. The controlled incorporation of nitrogen in the lattice provides enhanced control over heating and electrical properties, while simultaneously achieving a lower surface area fully recrystallized structure for oxidation resistance and long service life.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 21, 2016
    Inventors: Craig Andrew Willkens, Frederick Taylor Fernandez