The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2020
Filed:
Dec. 21, 2017
Agy Holding Corporation, Aiken, SC (US);
Robert Lurie Hausrath, Aiken, SC (US);
Anthony Vincent Longobardo, Johnston, SC (US);
Brian Gene Ruppel, Arden, NC (US);
AGY Holding Corporation, Aikien, SC (US);
Abstract
Glass compositions and glass fibers having low dielectric constants and low dissipation factors that may be suitable for use in electronic applications and articles are disclosed. The glass fibers and compositions of the present invention may include between 45.0 to 58.0 weight percent SiO; greater than 18.0 weight percent BOand no more than 26.0 weight percent BO; greater than 16.0 weight percent AlOand no more than 23.0 weight percent AlO; between 0.25 to 12.0 weight percent PO; greater than 0.25 weight percent CaO and less than 5.00 weight percent CaO; less than 4.50 weight percent MgO; greater than 0.25 weight percent CaO+MgO and less than 5.00 weight percent CaO+MgO; less than 0.80 weight percent FeO; and less than 0.50 weight percent TiO. Further, the glass composition has a glass viscosity of 1000 poise at a temperature greater than 1350 degrees Celsius.