Patents by Inventor Sivasubraman K. Muralidhar

Sivasubraman K. Muralidhar 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).

  • Lead-free glass enamels for decorating glass beverage containers and methods for using the same
    Patent number: 5725919
    Abstract: This invention relates to a lead-free glass enamel for glass beverage containers and a method of decorating glass beverage containers using such glass enamel. The method includes the steps of:i) providing a glass beverage container;ii) providing a decorative lead-free glass enamel comprising a glass frit, the glass frit comprising in weight percent from 17% to 28% SiO.sub.2, from 12% to 30% B.sub.2 O.sub.3, up to 3% Al.sub.2 O.sub.3, up to 13% Na.sub.2 O, up to 13% K.sub.2 O, up to 14% TiO.sub.2, from 5% to 30% ZnO, up to 14% ZrO.sub.2, up to 6% CeO, up to 6% Y.sub.2 O.sub.3, from 1% to 8% La.sub.2 O.sub.3, up to 1% MgO, up to 5% CaO, up to 10% SrO, up to 16% BaO, from 0.5% to 5% fluoride, a maximum of 5% each of WO.sub.3, P.sub.2 O.sub.5, Bi.sub.2 O.sub.3, Sb.sub.2 O.sub.3 and MoO.sub.3, with the provisions that the sum of the levels of plus Na.sub.2 O plus K.sub.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: March 10, 1998
    Assignee: Ferro Corporation
    Inventors: Gordon J. Roberts, John J. Maloney, Sivasubraman K. Muralidhar