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. 27, 2026
Filed:
Jun. 19, 2020
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Aya Nakamura, Mie, JP;
Tomohiro Yagyu, Mie, JP;
Hidetoshi Fukuchi, Mie, JP;
Junji Kurachi, Hyogo, JP;
NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo, JP;
Abstract
The present disclosure provides a novel glass filler that has a low permittivity and is suitable for mass production. A glass filler provided includes a glass composition that includes, in wt %, for example, 40≤SiO≤60, 25≤BO≤45, 0<AlO≤18, 0<RO≤5, and 0≤RO≤12, and satisfies at least one of: i) SiO+BO≥80 and SiO+BO+AlO≤99.9; and ii) SiO+BO≥78, SiO+BO+AlO≤99.9, and 0<RO<10. Another glass filler provided includes a glass composition that includes SiO, BO, AlO, RO, and 3<RO<8 at the same contents as the above, and satisfies SiO+BO≥75 and SiO+BO+AlO<97, where RO=LiO+NaO+KO and RO=MgO+CaO+SrO.