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. 14, 2009
Filed:
Sep. 20, 2006
Osamu Takubo, Tokyo, JP;
Kouji Tashiro, Tokyo, JP;
Kazuyoshi Terao, Tokyo, JP;
Ryohei Nakano, Tokyo, JP;
Osamu Takubo, Tokyo, JP;
Kouji Tashiro, Tokyo, JP;
Kazuyoshi Terao, Tokyo, JP;
Ryohei Nakano, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A dielectric device includes a dielectric substrate and a resonator unit. The resonator unit includes first and second holes. The first hole opens on a first surface of the dielectric substrate and extends toward a second surface opposite to the first surface. A first internal conductor is provided inside the first hole. The second hole opens on a third surface of the dielectric substrate, extends toward a fourth surface opposite to the third surface, and is connected to the first hole. A second internal conductor is provided inside the second hole with one end connected to an external conductor film on the third surface and the other end connected to the first internal conductor. The first hole has a recess opposed to a junction with the second hole. The first internal conductor in the recess is opposed to the external conductor film on the fourth surface across the dielectric substrate.