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. 01, 2005
Filed:
Jul. 02, 2003
Applicants:
Jun Takada, Okayama, JP;
Tatsuo Fujii, Okayama, JP;
Makoto Nakanishi, Okayama, JP;
Inventors:
Assignee:
President of Okayama University, Okayama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C 122 ;
U.S. Cl.
CPC ...
Abstract
A method of manufacturing aluminum-substituted hematite represented by α-(FeAl)Owhere x=0.01 to 0.15, by mixing an iron compound and an aluminum compound such that an atomic ratio of Fe to Al falls within the range of 99:1 to 85:15, adding citric acid and ethylene glycol to the mixture of the iron compound and aluminum compound to produce a gel, and pyrolyzing the gel, followed by calcining the pyrolyzed product.