Patents by Inventor Gyorgy Bakdos

Gyorgy Bakdos 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).

  • Process of surface treating luminescent materials
    Patent number: 4689172
    Abstract: The luminescent material(s) optionally composed of more color components are suspended in the solution of active agent(s) and treated with 0.5 to 10% by weight of glass forming acid or a mixture thereof, preferably boric acid or phosphoric acid calculated on the weight of the luminescent material. Then a solution comprising 1 to 15% by weight of aliphatic amines calculated on the weight of the luminescent materials is added and the mixture thus obtained is homogenized.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: August 25, 1987
    Assignee: Tungsram Reszvenytarsasag
    Inventors: Andras Czeiler, Sandor Lukacs, Tamas Palotai, Tibor Lakatos, Gyorgy Bakdos