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. 18, 2007
Filed:
Jun. 24, 2005
Hiroshi Sumi, Niwa-gun, JP;
Masashi Suzumura, Kani, JP;
Tsutomu Sakai, Kasugai, JP;
Hidetoshi Mizutani, Ama-gun, JP;
Manabu Sato, Nagoya, JP;
Hiroshi Sumi, Niwa-gun, JP;
Masashi Suzumura, Kani, JP;
Tsutomu Sakai, Kasugai, JP;
Hidetoshi Mizutani, Ama-gun, JP;
Manabu Sato, Nagoya, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A dielectric material comprising: a glass powder constituted of a glass comprising Si, B and an alkali metal element, the glass being amorphous in sintering at a temperature of 1,050° C. or lower; and a ceramic filler comprising at least one member of SiO, AlOand 3AlO.2SiO, and an alkali metal element, wherein when a total sum of Si converted into SiO, B converted into BOand the alkali metal element converted into AO, wherein A represents an alkali metal element, all of which are contained in the glass, is 100 mole %, the content of the alkali metal element converted into AO, which is contained in the glass, is 0.5 mole % or less; and when a total sum of at least one member of SiO, AlOand 3AlO.2SiO, and the alkali metal element converted into AO, all of which are contained in the ceramic filler, is 100 mole %, a content of the alkali metal element converted into AO, which is contained in the ceramic filler, is 0.5 mole % or less.