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:
Mar. 16, 2010
Filed:
Oct. 26, 2006
Douglas S. Boessneck, Aiken, SC (US);
J. Ronald Gonterman, Cub Run, KY (US);
Oleg A. Prokhorenko, St. Petersburg, RU;
Douglas S. Boessneck, Aiken, SC (US);
J. Ronald Gonterman, Cub Run, KY (US);
Oleg A. Prokhorenko, St. Petersburg, RU;
AGY Holding Corp., Aiken, SC (US);
Abstract
A glass fiber having a low dielectric constant and low dielectric loss tangent consists essentially of by weight, as a glass composition, 52 to 60% of SiO, 11 to 16% of AlO, 20 to 30% of BO, and 4 to 8% of CaO, and substantially no MgO, substantially no LiO, substantially no NaO, substantially no KO, and substantially no TiO. The glass fiber also may contain up to 2% Fby weight. The glass fiber is ideal for use as reinforcement for printed wiring boards, and has excellent dielectric properties at frequencies of about 18 GHz or higher.