Patents by Inventor Joseph W. Morrissey

Joseph W. Morrissey 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).

  • Lithium disilicate-containing glass-ceramics some of which are self-glazing
    Patent number: 5219799
    Abstract: This invention relates to glass-ceramic articles containing lithium disilicate crystals as the predominant crystal phase and consisting essentially, in weight percent, of 8-19% Li.sub.2 O, 0-5% Na.sub.2 O, 0-7% K.sub.2 O, 0-8% Na.sub.2 O+K.sub.2 O, 0-10% CaO, 0-6% SrO, 0-6% BaO, 2-12% Na.sub.2 O+K.sub.2 O+CaO+SrO+BaO, 0-7% ZnO, 0-11% Al.sub.2 O.sub.3, 1.5-11% ZnO+Al.sub.2 O.sub.3, with a molar ratio (Na.sub.2 O+K.sub.2 O) (ZnO+Al.sub.2 O.sub.3) between 0.075-1.25, 65-80% SiO.sub.2, and as a nucleating agent 1.5-7% P.sub.2 O.sub.5 and/or 0.0001-0.1% Pd. Glass-ceramics having certain compositions within those ranges are self-glazing.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: June 15, 1993
    Assignee: Corning Incorporated
    Inventors: George H. Beall, Lina M. Echeverria, Joseph W. Morrissey, Joseph E. Pierson