logo

For the Inventor, By the Inventor

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 4248727 B1

PDFFull Text
Date of Patent:
Feb. 03, 1981

Filed:

Dec. 04, 1979

Dielectric ceramics

Applicant:
Inventors:

Syunichiro Kawashima, Nishinomiya, JP;

Masamitsu Nishida, Toyonaka, JP;

Ichiro Ueda, Toyonaka, JP;

Hiromu Ouchi, Toyonaka, JP;

Assignee:

Matsushita Electric Industrial Co., Ltd., , JP;

Attorney:

Wenderoth, Lind & Ponack

Primary Examiner:

Helen M McCarthy

Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
106 46 ; 106 395 ; 333234 ;
Abstract

A dielectric ceramic having a composition expressible by (1-w) (xBaO.multidot.yNa.sub.2 O.multidot.zNb.sub.2 O.sub.5)+wMeO.multidot.ZrO.sub.2 wherein Me denotes Ca or Sr, 0.593.ltoreq.x.ltoreq.0.762, 0.04.ltoreq.y.ltoreq.0.13, 0.174.ltoreq.z.ltoreq.0.32, x+y-z=1, and 0<w.ltoreq.0.95. It exhibits large dielectric constant and low microwave loss with high temperature-stability for resonant frequency and is suitable for use as dielectric resonators, electrical filters, substrates, etc.

Find Patent Forward Citations

Quick Actions:

Kawashima, Syunichiro. (1981). Dielectric ceramics (U.S. Patent No. 4248727). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4248727

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

Loading…