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:
Oct. 22, 1985
Filed:
Feb. 02, 1984
Applicant:
Inventors:
Norimichi Nagai, Hiroshima, JP;
Nanao Horiishi, Hiroshima, JP;
Masao Kiyama, Kyoto, JP;
Toshio Takada, Kyoto, JP;
Assignee:
Toda Kogyo Corp., Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C04B / ;
U.S. Cl.
CPC ...
423594 ; 252 6263 ;
Abstract
Disclosed herein are the plate-like barium ferrite particles for use in magnetic recording, showing a specific surface area of 11 to 50 m.sup.2 /g, a value of magnetization of higher than 25 emu/g in a magnetic field of 10 KOe and a coercive force of 600 to 1100 Oe, and a process for producing the same.