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:
Nov. 29, 2005
Filed:
Jul. 23, 2004
Kenichi Matsuoka, Ishikawa-ken, JP;
Hironao Chikusa, Kanazawa, JP;
Takashi Kadooka, Ishikawa-ken, JP;
Kenichi Matsuoka, Ishikawa-ken, JP;
Hironao Chikusa, Kanazawa, JP;
Takashi Kadooka, Ishikawa-ken, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A nonreciprocal circuit device, in which metal members which form a metal case can be resistance-welded stably and reliably, having high reliability and satisfactory characteristics, a communication device using the nonreciprocal circuit device, and a method of manufacturing the nonreciprocal circuit device. Protruding portions are formed at two places on each side wall of an upper metal case. The upper metal case and a lower metal case are bonded together by resistance welding the two side walls of the lower metal case to the two side walls of the upper metal case at the protruding portions.