Patents by Inventor Aaron Wold

Aaron Wold 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).

  • Zinc sulfide electroluminescent phosphor particles and electroluminescent lamp made therefrom
    Patent number: 5309071
    Abstract: A copper- and/or manganese-activated zinc sulfide electroluminescent phosphor is made by coating particles of a ferroelectric material with a very thin coating of the phosphor. The phosphor is made by reacting zinc- and copper- and/or manganese-containing species with hydrogen sulfide and hydrogen chloride gases in a low-temperature vapor state reaction.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: May 3, 1994
    Assignee: Osram Sylvania Inc.
    Inventors: Ronald E. Karam, Aaron Wold
  • Method of making zinc sulfide electroluminescent phosphor particles
    Patent number: 5273774
    Abstract: A copper- and/or manganese-activated zinc sulfide electroluminescent phosphor is made by coating particles of a ferroelectric material with a very thin coating of the phosphor. The phosphor is made by reacting zinc- and copper- and/or manganese-containing species with hydrogen sulfide and hydrogen chloride gases in a low-temperature vapor state reaction.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: December 28, 1993
    Assignee: Osram Sylvania Inc.
    Inventors: Ronald E. Karam, Aaron Wold
  • Method of making zinc sulfide precursor material for a copper-activated zinc sulfide electroluminescent phosphor
    Patent number: 5269966
    Abstract: A zinc sulfide precursor material having axially symmetric platelet-type particles for a copper-activated zinc sulfide electroluminescent phosphor is made by reacting zinc- and copper-containing species with hydrogen sulfide and hydrogen chloride gases in a low-temperature vapor state reaction to obtain copper-containing zinc sulfide particles.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: December 14, 1993
    Assignee: Osram Sylvania Inc.
    Inventors: Ronald E. Karam, Aaron Wold
  • Reduction process for forming powdered alloys from mixed metal iron oxides
    Patent number: 4525206
    Abstract: Use of a strong reducing agent such as calcium metal allows complete reduction of refractory and difficulty reducible mixed metal iron oxides to form alloys. The powdered iron-based alloys can thus be prepared at significantly lower temperature than by the conventional melt technique.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: June 25, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Stuart L. Soled, Aaron Wold, Robert Kershaw