Patents by Inventor Brain Yale

Brain Yale 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).

  • Borosilicate glass composition
    Patent number: 5219801
    Abstract: A borosilicate glass composition consisting essentially of the following components:______________________________________ SiO.sub.2 57-77 mol %, Al.sub.2 O.sub.3 0-8.5 mol %, B.sub.2 O.sub.3 4.6-23.0 mol %, ______________________________________the total amount of SiO.sub.2 +Al.sub.2 O.sub.3 +B.sub.2 O.sub.3 being from 81 to 91 mol %, ______________________________________ Li.sub.2 O 0-1.5 mol %, Na.sub.2 O 2-7.5 mol %, K.sub.2 O 2-7.5 mol %, ______________________________________the total amount of Li.sub.2 O+Na.sub.2 O+K.sub.2 O being from 7.6 to 10.6 mol %, ______________________________________ CeO.sub.2 0.7-2.0 mol %, Sb.sub.2 O.sub.3 0-0.3 mol %, As.sub.2 O.sub.3 0-0.3 mol %, TiO.sub.2 0-2.0 mol %, F.sub.2 0-2.0 mol %, ______________________________________and one or more of MgO, CaO, SrO, BaO, ZnO and PbO, in a total amount of from 0 to 7 mol %; the glass composition having a coefficient of linear expansion within the range 64.0-70.0.times.10.sup.-7 /deg.C.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: June 15, 1993
    Assignee: Pilkington PLC
    Inventors: Peter Shorrock, Brain Yale