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. 11, 2004
Filed:
Oct. 22, 2002
Kenji Saito, Ishikawa-ken, JP;
Masayuki Yoneda, Ishikawa-ken, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A nonreciprocal circuit device includes a metal casing (upper and lower casing members), a permanent magnet, a center electrode assembly, and a multilayer substrate. The multilayer substrate has terminal electrodes that protrude therefrom and includes a resistance element and matching capacitor elements. The terminal electrodes of the multilayer substrate are fabricated by providing through holes in constraining layers and, after firing, removing the constraining layers except for the through holes. The bottom section of the lower metal casing member is arranged among the terminal electrodes. A ground electrode that covers substantially the entire lower surface of the multilayer substrate is electrically connected to the bottom section of the lower metal casing member. The height of the protrusions of the terminal electrodes extending from the lower surface of the multilayer substrate is substantially equal to a thickness (about 0.1 mm to about 0.2 mm) of the lower metal casing member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile