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:
Dec. 12, 2023
Filed:
Aug. 03, 2022
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Unitika Ltd., Osaka, JP;
Unitika Glass Fiber Co., Ltd., Uji, JP;
Aya Nakamura, Mie, JP;
Hidetoshi Fukuchi, Mie, JP;
Junji Kurachi, Hyogo, JP;
Riku Sawai, Kyoto, JP;
Takaharu Miyazaki, Nara, JP;
Yoshito Nawa, Kyoto, JP;
Kohji Hattori, Gifu, JP;
NIPPON SHEET GLASS COMPANY, LIMITED, Tokyo, JP;
UNITIKA LTD., Osaka, JP;
UNITIKA GLASS FIBER CO., LTD., Kyoto, JP;
Abstract
The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, 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 composition provided 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.