Patents by Inventor Robert T. Rewick

Robert T. Rewick 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).

  • Production of substantially monodisperse phosphor particles
    Patent number: 6039894
    Abstract: The invention relates to a method for producing activated, substantially monodisperse, phosphorescent particles and particles formed thereby. The method suspends substantially monodisperse, phosphor-precursor particles in a fluidizing gas and then introduces a reactive gas to contact the suspended phosphor-precursor particles. Heating the suspended phosphor-precursor particles to a reaction temperature then forms unactivated phosphorescent particles. In another embodiment, the phosphor-precursor particles may be heated to a reaction temperature where they decompose to form the unactivated phosphor particles. The unactivated phosphorescent particles suspended within the fluidizing gas are activated by heating the unactivated phosphorescent particles to an activation temperature forming activated, substantially monodisperse, phosphorescent particles.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: March 21, 2000
    Assignees: SRI International, STC Technologies
    Inventors: Angel Sanjurjo, Kai-Hung Lau, David Lowe, Anastasia Canizales, Naixiong Jiang, Victor Wong, Liqiang Jiang, Luke V. Schneider, Naheed Mufti, Robert T. Rewick, Marie Johansson, Keith Kardos