Patents by Inventor David J. Cornelius

David J. Cornelius 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).

  • Method of improving heat stability of pigmentable silicone elastomer
    Patent number: 4677141
    Abstract: A method of improving the heat stability of silicone elastomers is disclosed. An improved pigmentable silicone elastomeric composition is produced by mixing a silicone elastomer composition having a vinyl radical content of from 0.01 to 0.1 percent by weight with a pretreated, white clay having a surface area of less than 50 m.sup.2 /g, said surface containing olefinic unsaturated siloxy groups, and an organic peroxide vulcanizing agent. The improved silicone elastomeric composition is formed, then heated to vulcanize, to yield a silicone elastomer having improved resistance to the effects of elevated temperatures. The improved silicone elastomeric composition is also claimed. The improved silicone elastomeric composition can be pigmented.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: June 30, 1987
    Assignee: Dow Corning Corporation
    Inventors: David J. Cornelius, Richard L. Przybyla