Patents by Inventor Thomas P. Lockhart

Thomas P. Lockhart 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 for making an enoxy stabilized room temperature vulcanizable organopolysiloxane composition which resists color change upon aging
    Patent number: 4472564
    Abstract: A method is provided for making a room temperature vulcanizable organopolysiloxane composition which is stabilized with an enoxy containing scavenger for hydroxy radicals which is used in combination with certain cure accelerators. The room temperature vulcanizable organopolysiloxane compositions can be allowed to age over an extended period of time under ambient conditions without any significant change in color occurring in the resulting room temperature vulcanizable composition.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: September 18, 1984
    Assignee: General Electric Company
    Inventor: Thomas P. Lockhart
  • One package, stable, moisture curable, alkoxy-terminated organopolysiloxane compositions
    Patent number: 4472551
    Abstract: Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst such as a tin compound and a silicon-free scavenger, such as an organic scavenger, for materials having chemically combined hydroxy radicals.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: September 18, 1984
    Assignee: General Electric Company
    Inventors: Mary A. White, John E. Hallgren, Thomas P. Lockhart
  • One package, stable, moisture curable, alkoxy-terminated organopolysiloxane compositions
    Patent number: 4467063
    Abstract: Stable, substantially acid-free, one package moisture curable alkoxy-terminated organopolysiloxane compositions are provided having a condensation catalyst and a stabilizer or scavenger for materials having chemically combined hydroxy radicals in the form of an N-silyl-substituted imidazole.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: August 21, 1984
    Assignee: General Electric Company
    Inventor: Thomas P. Lockhart