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:
Mar. 23, 2010
Filed:
Feb. 05, 2008
Ayumi Nozaki, Tokyo, JP;
Akira Yamada, Tokyo, JP;
Kiyoshi Saito, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Provided is a ceramic powder for a green sheet that gives a low-temperature fired ceramic substrate that can be fired at a temperature of 900° C. or lower and has excellent dielectric properties in the higher frequency bands such as microwave and millimeter-wave bands, has a low hygroscopicity, and has minor warping and creasing even in the case of co-firing with a silver-based conductor paste, the ceramic powder for a green sheet including a glass powder and an alumina powder, in which the glass powder contains 35 to 39% by weight of SiO, 9 to 17% by weight of AlO, 21 to 40% by weight of BO, 10 to 20% by weight of R'O, wherein R′ is one or more kinds selected from the group consisting of Mg, Ca and Ba, 0.2 to 2% by weight of LiO, and 0.5 to 2% by weight of MO, wherein M is one or more kinds selected from the group consisting of Ti and Zr, so that the total is 100% by weight.