Patents by Inventor Ilzoo Lee

Ilzoo Lee 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).

  • Synthesis of monoclinic celsian
    Patent number: 6039929
    Abstract: A process for producing monoclinic celsian comprising the steps of forming a mixture of an alkoxide of silica, an alkoxide of aluminum, and a salt of barium; adding a catalyst of a fluorine containing compound to the mixture; calcining the catalyzed mixture; and, heat treating the calcined mixture. This process uses a sol-gel process to progressively increase the amount of monoclinic phase in relation to the hexagonal celsian. Additionally, a process for producing monoclinic strontium aluminosilicate is disclosed.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: March 21, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ilzoo Lee, Josephine Covino
  • Silicate gel dye laser
    Patent number: 5329540
    Abstract: A dye laser comprising a solid styate laser medium and a pumping energy sce, the laser medium comprising a lasing concentration of a water or alcohol soluble organic dye which is incorporated into a hydrolyzed silicon organometallic solution, and forming a gel which is dried to form a transparent silicate glass which is doped with the organic dye.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: July 12, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Ilzoo Lee, Josephine Covino-Hrbacek