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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.:

US 8765621 B1

PDFFull Text
Expired
Date of Patent:
Jul. 01, 2014

Filed:

Nov. 25, 2009

Dielectric ceramic composition for high-frequency use and method for producing the same, as well as dielectric ceramic for high-frequency use and method for producing the same and high-frequency circuit element using the same

Applicants:

Takafumi Kawano, Yamaguchi, JP;

Masataka Yamanaga, Yamaguchi, JP;

Atsushi Okabe, Yamaguchi, JP;

Inventors:

Takafumi Kawano, Yamaguchi, JP;

Masataka Yamanaga, Yamaguchi, JP;

Atsushi Okabe, Yamaguchi, JP;

Assignee:

UBE Industries, Ltd., Yamaguchi, JP;

Attorneys:

Frommer Lawrence & Haug LLP

Ronald R. Santucci

Primary Examiner:

Karl Group

Int. Cl.
CPC ...
C04B 35/20 (2006.01); C04B 35/465 (2006.01); H01P 7/10 (2006.01); H01B 3/12 (2006.01); C04B 35/457 (2006.01);
U.S. Cl.
CPC ...
H01P 7/10 (2013.01); H01B 3/12 (2013.01); C04B 35/20 (2013.01); C04B 35/457 (2013.01); C04B 35/465 (2013.01); C04B 2235/3445 (2013.01); C04B 2235/3293 (2013.01); C04B 2235/3236 (2013.01);
Abstract

There is provided a dielectric ceramic composition for high-frequency use represented by a composition formula of a(Sn,Ti)O-bMgSiO-cMgTiO-dMgSiO. In the composition formula, a, b, c and d (provided that a, b, c and d are mol %) are within the following ranges: 4≦a≦37, 34≦b≦92, 2≦c≦15 and 2≦d≦15, respectively, and a+b+c+d=100. The dielectric ceramic composition for high-frequency use has a relative permittivity ∈of 7.5-12.0, a Q×fvalue of not less than 50000 (GHz) and an absolute value of a temperature coefficient τof resonance frequency fof not more than 30 ppm/° C.

Find Patent Forward Citations

Kawano, Takafumi. (2014). Dielectric ceramic composition for high-frequency use and method for producing the same, as well as dielectric ceramic for high-frequency use and method for producing the same and high-frequency circuit element using the same (U.S. Patent No. 8765621). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8765621

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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