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. 12, 1998
Filed:
Jul. 06, 1995
Applicant:
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
252 6256 ; 252 6262 ; 252 6263 ; 252 6264 ; 423594 ; 423632 ;
Abstract
Ferrite materials including spinel and magnetoplumbite ferrite materials are prepared by using a mixture containing at least one metal chloride and at least one metal oxide as a starting raw material and roasting the mixture in a steam-containing atmosphere to carry out pyrolysis reaction and solid phase reaction at the same time.