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. 21, 1991
Filed:
Jan. 04, 1990
Norihiro Naito, Tottori, JP;
Hitachi Ferrite, Ltd., Tokyo, JP;
Abstract
A lumped constant non-reciprocal circuit element includes an insulator substrate, a predetermined number of conductor layers formed on a top surface of the insulator substrate for forming electrostatic capacitors, a shielding conductor layer formed on a top surface of the insulator substrate, and a conductor layer formed on a bottom surface of the insulator substrate and electrically connected to the shielding conductor layer. A magnetic member is disposed on the shielding conductor layer formed on the insulator substrate, and a predetermined number of mutually insulated central conductors are disposed on the magnetic member such that one end of each central conductor is connected to the shielding conductor layer and the other portion of each central conductor is connected to each electrostatic capacitor-forming conductor layer. Also means are provided for applying a dc magnetic field to the magnetic member.