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. 10, 2007
Filed:
Feb. 28, 2005
Sea-fue Wang, Taipei, TW;
Yuh-ruey Wang, Taipei County, TW;
Mei-hui Hsiao, Hualien, TW;
National Taiwan University Technology, Taipei, TW;
Abstract
The present invention relates to a low-temperature sintered barium titanate microwave dielectric ceramic material. The host matrix thereof can be represented by BaTiMO, where x is 1˜6, y is 1˜17, z is 0˜1, k is 0˜3, M is an element substituting the Ba or Ti ion, for example selected from an alkali metal, an alkaline-earth metal, a transition group or a rare earth group, and preferably BaTiOor the host matrix containing Zr, Sn, Zn, etc. According to the present invention, a low melting glass is added and a subsequent milling operation is performed to reduce the sintering temperature of the microwave dielectric ceramic material to less than 1,000° C. The low melting glass can be for example the Ba—B—Si—Li glass, Ba—B—Zn—Si—Li glass, Ba—B—Si—Li—Cu glass or Cu—B—Zn—Si—Li glass.