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:
Apr. 15, 2003
Filed:
Mar. 15, 2001
Applicant:
Inventors:
Masashi Gotoh, Tokyo, JP;
Kouji Tashiro, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 1/205 ;
U.S. Cl.
CPC ...
H01P 1/205 ;
Abstract
A plurality of resonators are formed in a dielectric porcelain block , wherein each of the resonators is formed by coating an interior surface of a through section with an interior conductor , thus constituting a dielectric filter . On a side surface of the dielectric block perpendicular to an open end face having the through sections formed therein, there are formed protrusions having a height L lower than that of the through sections. Terminal electrodes and are defined with the protrusions taken as a boundary between the terminal electrodes and , and isolated from an exterior conductor