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. 18, 2003
Filed:
Dec. 21, 1999
Applicant:
Inventors:
Satoshi Murata, Yokaichi, JP;
Etsuji Yamamoto, Yokaichi, JP;
Kenji Ozawa, Omihachiman, JP;
Minoru Tamada, Yokaichi, JP;
Yoshihiro Nishinaga, Hikone, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/502 ; H01F 2/726 ;
U.S. Cl.
CPC ...
H01F 1/502 ; H01F 2/726 ;
Abstract
An inductor includes a bar-shaped ferrite core and a spiral coil. The spiral coil is formed by removing a portion of a conductive film formed at least around the peripheral surface of the ferrite core. The surface of the ferrite core is impregnated with an insulating glass before the conductive film is formed. The content of the glass is preferably about 0.1% to about 20% by weight of the ferrite core. The ferrite core is preferably an Ni—Zn-based ferrite core.