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:
Aug. 05, 2003
Filed:
Dec. 28, 2001
Applicant:
Inventor:
Hiroki Dejima, Kanazawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/383 ; H01P 1/36 ;
U.S. Cl.
CPC ...
H01P 1/383 ; H01P 1/36 ;
Abstract
An isolator serving as a nonreciprocal circuit device includes a permanent magnet, a ferrite to which a DC magnetic field is applied by the permanent magnet, a plurality of center electrodes placed on the ferrite, and upper and lower casings for accommodating the permanent magnet, the ferrite, and the center electrodes. The upper and lower casings are made of a material chiefly containing iron, and the average value of the surface roughness of the casings is less than or equal to 0.9 &mgr;m. The front and rear surfaces of the upper and lower casings are Ag-plated.
Dejima, Hiroki. (2003). Nonreciprocal circuit device with a casing average surface roughness less than or equal to 0.9 microns (U.S. Patent No. 6603370). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6603370
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile