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:
Feb. 26, 1985
Filed:
Feb. 23, 1984
Applicant:
Inventors:
Assignee:
Chisso Corporation, Ohsaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
75 / ; 148105 ;
Abstract
Improved acicular fine particles of ferromagnetic metal having superior powder characteristics and tape characteristics are provided, which fine particles are prepared by adding to an aqueous suspension of acicular iron oxide or oxyhydroxide, a solution of a different kind and non-alkali metal salt of an organic acid in place of conventional inorganic acids, followed by making the mixture basic and heat reduction.