Patents by Inventor Stanley M. Antczak

Stanley M. Antczak 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).

  • Quartz fusion crucible
    Patent number: 6632086
    Abstract: A crucible for melting a silica for fusion of said silica into a desired shape. The crucible having a main body with inner and outer surfaces comprised of a refractory material. In addition, at least a portion of the inner surface includes a barrier layer comprised of a material selected from rhenium, osmium, iridium, and mixtures thereof.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: October 14, 2003
    Inventors: Stanley M. Antczak, Mark A. Castelletti, Frederic F. Ahlgren
  • Quartz fusion furnace and method for forming quartz articles
    Patent number: 6422861
    Abstract: A crucible for melting a silica for fusion of said silica into a desired shape. The crucible having a main body with inner and outer surfaces comprised of a refractory material. In addition, the inner surface adjacent at least a melting zone of the furnace includes a substantially gas-tight barrier layer comprised of a material selected from rhenium, osmium, iridium, and mixtures thereof.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: July 23, 2002
    Assignee: General Electric Company
    Inventors: Stanley M. Antczak, Frederic F. Ahlgren
  • Viscosity tailoring of fused silica
    Patent number: 6235669
    Abstract: A synthetic fused silica composition comprising silica and aluminum, wherein said aluminum is generally present in at least 7 parts per million and the composition has a viscosity of at least 1014.5 poise.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: May 22, 2001
    Assignee: General Electric Company
    Inventors: Stanley M. Antczak, Mohan Rajaram