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:
Apr. 28, 1981
Filed:
Mar. 11, 1977
Applicant:
Inventors:
Noboru Tsuya, Sendai, JP;
Kenichi Arai, Sendai, JP;
Hiroshi Shimizu, Sendai, JP;
Tsuyoshi Masumoto, Sendai, JP;
Assignee:
Research Development Corporation of Japan, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H01L / ; H01L / ; H04R / ;
U.S. Cl.
CPC ...
333141 ; 333144 ; 333147 ; 333148 ;
Abstract
An electric signal transmission transducer employing a ferromagnetic amorphous ribbon and especially an electric signal transmission element and system and an electroacoustic signal conversion system using a ferromagnetic amorphous ribbon. The transmission transducer also provides for applying a magnetic field to the ferromagnetic amorphous ribbon for controlling the electric signal transmission or delay time. Also shown are the electric and magnetic characteristics of ferromagnetic amorphous ribbons after various heat treatments in various magnetic fields.