Patents by Inventor Paula J. Holmes

Paula J. Holmes 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).

  • Preparation of crystals
    Patent number: 6860942
    Abstract: The present invention is directed to a process or method for preparing a metal fluoride pre-melt material of a quality suitable for the preparation and growth of metal fluoride optical monocrystals. The pre-melt material of the invention is prepared using permeable graphite crucibles having a permeability (porosity) greater than 4 cm2/s. Exemplary monocrystals prepared from pre-melts of the invention exhibited improved transmissivity and laser durability relative to monocrystals prepared from convention pre-melt materials. Impurities in the pre-melt arising from the use of scavenger/fluorinating agent in the pre-melt have been shown to be generally less than 10 ppb and be less than 1 ppb.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: March 1, 2005
    Assignee: Corning Incorporated
    Inventors: Michele M. Meyer-Fredholm, Paula J. Holmes, Qiao Li
  • Preparation of crystals
    Publication number: 20030217688
    Abstract: The present invention is directed to a process or method for preparing a metal fluoride pre-melt material of a quality suitable for the preparation and growth of metal fluoride optical monocrystals. The pre-melt material of the invention is prepared using permeable graphite crucibles having a permeability (porosity) greater than 4 cm2/s. Exemplary monocrystals prepared from pre-melts of the invention exhibited improved transmissivity and laser durability relative to monocrystals prepared from convention pre-melt materials. Impurities in the pre-melt arising from the use of scavenger/fluorinating agent in the pre-melt have been shown to be generally less than 10 ppb and be less than 1 ppb.
    Type: Application
    Filed: June 3, 2003
    Publication date: November 27, 2003
    Inventors: Michele M. Meyer-Fredholm, Paula J. Holmes, Qiao Li