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:
Jul. 20, 2004
Filed:
Mar. 05, 2002
Other;
Abstract
An object of the invention is to provide a low temperature fired porcelain having an optimum firing temperature not higher than 1000° C. a reduced dielectric constant ∈ r, an improved quality coefficient and a low incidence of cracks. The invention provides a low temperature-fired porcelain comprising a barium component in a calculated amount of 10 to 64 weight percent when calculated as BaO, a silicon component in a calculated amount of 20 to 80 weight percent when calculated as SiO , an aluminum component in a calculated amount of 0.1 to 20 weight percent when calculated as Al O , a boron component in a calculated amount of 0.3 to 1.0 weight percent when calculated as B O a zinc component in a calculated amount of 0.5 to 20 weight percent when calculated as ZnO, and a bismuth component in a calculated amount of not higher than 20 weight percent when calculated as Bi O .