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:
Mar. 29, 2011
Filed:
Apr. 16, 2009
Shigeji Arakawa, Kanazawa, JP;
Yukihiro Kitaichi, Ishikawa-gun, JP;
Takashi Kadooka, Hakusan, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A nonreciprocal circuit device includes a ferrite-magnet element having ferrite provided with first and second central electrodes intersecting each other in an insulated manner and two permanent magnets arranged to sandwich the ferrite to apply a DC magnetic field thereto, a substrate on which the ferrite-magnet element and matching circuit elements are mounted, and a flat plate yoke. A first resin layer made of a cured liquid resin is provided at bonding portions of the ferrite-magnet element to the substrate, and a second resin layer made of a cured soft sheet-shaped resin adhered to a rear surface of the flat plate yoke is provided around the ferrite-magnet element and the matching circuit elements.