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:
Jan. 31, 2023
Filed:
Jul. 20, 2018
Nitto Boseki Co., Ltd., Fukushima, JP;
Takanobu Hosokawa, Fukushima, JP;
Hiroyuki Yabe, Fukushima, JP;
Tadashi Kurita, Fukushima, JP;
Takashi Nonaka, Fukushima, JP;
Nitto Boseki Co., Ltd., Fukushima, JP;
Abstract
Provided is a glass composition for glass fiber having a low dielectric constant and a low dielectric loss tangent, suppressing occurrence of phase separation, and reducing viscosity at high temperatures. The glass composition for glass fiber includes: SiOin the range of 52.0 to 59.5% by mass; BOin the range of 17.5 to 25.5% by mass; AlOin the range of 9.0 to 14.0% by mass; SrO in the range of 0.5 to 6.0% by mass; MgO in the range of 1.0 to 5.0% by mass; and CaO in the range of 1.0 to 5.0% by mass, and includes Fand Clin the range of 0.1 to 2.5% by mass in total, with respect to the total amount.