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:
Jan. 05, 1982
Filed:
Jun. 07, 1979
Applicant:
Inventors:
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428141 ; 360134 ; 428150 ; 428329 ; 428335 ; 428336 ; 428337 ; 428694 ; 428900 ; 428409 ;
Abstract
A magnetic audio-recording tapes based on finely-divided ferromagnetic alloy materials are disclosed which have improved surface characteristics. The improvement of recording and playback characteristics is specifically exhibited in a reduction in modulation noise.