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:
May. 22, 2001
Filed:
Apr. 01, 1997
Applicant:
Inventor:
Seigo Hino, Nagoya, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D 5/12 ; B05D 1/32 ; H01P 1/202 ;
U.S. Cl.
CPC ...
B05D 5/12 ; B05D 1/32 ; H01P 1/202 ;
Abstract
A high frequency dielectric filter device having a plurality of coaxial dielectric resonators arranged in parallel with each other wherein a portion having no conductor layer is formed on an outer peripheral surface close to a short-circuit end surface of a dielectric substrate in the direction diagonal to through-holes for the dielectric resonators, thereby easily and simultaneously obtaining polarization and coupling between the coaxial dielectric resonators with each other, that is, obtaining inter-stage coupling and an attenuation pole in the high band side of a center frequency.