Patents by Inventor Douglas R. Ginter

Douglas R. Ginter 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).

  • Patent number: 5091110
    Abstract: A method of making a lanthanum cerium terbium phosphate phosphor involves the coprecipitation of a rare earth nitrate solution with diammonium hydrogen phosphate to form a lanthanmum cerium terbium phosphate, combining the phosphate with a fluxing compound, and firing the resulting mixture to form the phosphor.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: February 25, 1992
    Assignee: GTE Products Corporation
    Inventors: Albert K. Fan, Anthony F. Kasenga, Douglas R. Ginter
  • Patent number: 4840747
    Abstract: A method is disclosed for producing a terbium activated cerium magnesium aluminate phosphor which comprises forming a uniform powder blend consisting essentially of in percent by weight from about 73 to about 74 aluminum oxide wherein the aluminum oxide can be alpha aluminum oxide or gamma aluminum oxide or combinations thereof, from about 12 to about 14 cerium oxide, from about 2 to about 3 magnesium, from about 0.3 to about 0.7 fluoride, and from about 6 to about 9 terbium, firing the blend in a non-oxidizing atmosphere at a temperature of from about C. to about C. for a sufficient time to produce the phosphor wherein the particle size is no greater than about 5 micrometers in diameter. The phosphor is then cooled and deagglomerated.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: June 20, 1989
    Assignee: GTE Products Corporation
    Inventors: Albert K. Fan, Douglas R. Ginter, Joseph J. Lenox, Thomas L. Henson