Patents by Inventor Joan M. Coveleskie

Joan M. Coveleskie 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).

  • Moisture resistant electroluminescent phosphor with high initial brightness and method of making
    Patent number: 8298666
    Abstract: An electroluminescent (EL) phosphor is described wherein each individual phosphor particle is encapsulated in an inorganic coating, preferably aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps. The method of applying the coating is a hybrid process, which involves EL phosphor particles first being coated with a thin inorganic film using an atomic layer deposition (ALD) method in a fluidized bed wherein the precursors are introduced sequentially in repeated cycles, subsequently followed by an additional coating layer applied by a chemical vapor deposition (CVD) method in which the precursors are introduced simultaneously.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: October 30, 2012
    Assignee: Global Tungsten & Powders Corp.
    Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck
  • Moisture-resistant electroluminescent phosphor with high initial brightness and method of making
    Patent number: 7833437
    Abstract: The present invention is an electroluminescent phosphor wherein each individual phosphor particle is encapsulated in an inorganic coating applied by an atomic layer deposition (ALD) coating method. In a preferred embodiment, the coating is aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: November 16, 2010
    Assignee: Global Tungsten & Powders Corp.
    Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck
  • Moisture-resistant Electroluminescent Phosphor with High Initial Brightness and Method of Making
    Publication number: 20070172657
    Abstract: An electroluminescent (EL) phosphor is described wherein each individual phosphor particle is encapsulated in an inorganic coating, preferably aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps. The method of applying the coating is a hybrid process, which involves EL phosphor particles first being coated with a thin inorganic film using an atomic layer deposition (ALD) method in a fluidized bed wherein the precursors are introduced sequentially in repeated cycles, subsequently followed by an additional coating layer applied by a chemical vapor deposition (CVD) method in which the precursors are introduced simultaneously.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 26, 2007
    Applicant: OSRAM SYLVANIA Inc.
    Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck
  • Moisture-resistant Electroluminescent Phosphor with High Initial Brightness and Method of Making
    Publication number: 20070172580
    Abstract: The present invention is an electroluminescent phosphor wherein each individual phosphor particle is encapsulated in an inorganic coating applied by an atomic layer deposition (ALD) coating method. In a preferred embodiment, the coating is aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 26, 2007
    Applicant: OSRAM SYLVANIA INC.
    Inventors: Chen-Wen Fan, Tuan A. Dang, Joan M. Coveleskie, Frank A. Schwab, Dale E. Benjamin, David C. Sheppeck