Patents by Inventor William L. Headrick, Jr.

William L. Headrick, Jr. 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).

  • Low cement spinel stabilized silicon carbide composite material
    Patent number: 9090507
    Abstract: An oxidation resistant low cement silicon carbide composite material, including a high alumina cement matrix portion in an amount of about 8 weight percent, a high alumina spinel portion in an amount between about 5 weight percent and about 20 weight percent, a silica fume portion in an amount of about 8 percent, a chrome aluminum stainless steel alloy needle additive portion, and a silicon carbide portion in an amount defining a remainder of the composition. The high alumina cement portion contains about 68 weight percent alumina and about 31 weight percent calcia, and the high alumina spinel portion contains about 78 weight percent alumina and about 22 weight percent magnesia.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: July 28, 2015
    Inventor: William L. Headrick, Jr.
  • LOW CEMENT SPINEL STABILIZED SILICON CARBIDE COMPOSITE MATERIAL
    Publication number: 20140311385
    Abstract: An oxidation resistant low cement silicon carbide composite material, including a high alumina cement matrix portion in an amount of about 8 weight percent, a high alumina spinel portion in an amount between about 5 weight percent and about 20 weight percent, a silica fume portion in an amount of about 8 percent, a chrome aluminum stainless steel alloy needle additive portion, and a silicon carbide portion in an amount defining a remainder of the composition. The high alumina cement portion contains about 68 weight percent alumina and about 31 weight percent calcia, and the high alumina spinel portion contains about 78 weight percent alumina and about 22 weight percent magnesia.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 23, 2014
    Inventor: William L. Headrick, Jr.