Patents by Inventor Todd R. Stegman

Todd R. Stegman 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).

  • Polymer-densified fillers
    Patent number: 4898898
    Abstract: A method for providing polymer-densified fillers consisting essentially of mixing 100 parts of a silicone polymer with 50 to 500 parts of reinforcing filler or 400 to 5000 parts of extending filler and mixing such blend for an amount of time effective for providing a dense, free-flowing particulate mixture.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: February 6, 1990
    Assignee: General Electric Company
    Inventors: Thomas H. Fitzgerald, John S. Razzano, Todd R. Stegman
  • Process for the continuous manufacture of silicone gums
    Patent number: 4551515
    Abstract: A process for the continuous polymerization of polydiorganosiloxanes comprising:(a) mixing one or more cyclopolysiloxane monomers with one or more chainstopping agents,(b) preheating the mixture resulting from (a),(c) adding to the preheated mixture of (b) an amount of catalyst effective for catalyzing a polymerization reaction,(d) polymerizing the catalyzed mixture of (c) in a screw extruder having essentially plug flow therethrough, and(e) adding to the resulting polymer an amount of neutralizing agent effective for neutralizing said catalyst.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: November 5, 1985
    Assignee: General Electric Company
    Inventors: Michael J. Herberg, Rudolph F. Macander, Todd R. Stegman