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.:

US 6987077 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 17, 2006

Filed:

Jun. 10, 2004
Applicants:

Nobuo Takagi, Shunan, JP;

Masami Tadasa, Shunan, JP;

Inventors:

Nobuo Takagi, Shunan, JP;

Masami Tadasa, Shunan, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 35/44 (2006.01);
U.S. Cl.
CPC ...
Abstract

A fired spinel complex oxide is produced by firing a mixture containing a slag by-produced in chromium refining, a reducer, and a silica-containing material, and is essentially composed of: 29 to 40 percent by weight of FeO; 15 to 20 percent by weight of AlO; 9 to 14 percent by weight of MgO; 0 to 4 percent by weight of NaO; 9 to 17 percent by weight of CrO; 14 to 20 percent by weight of SiO; and 2 percent by weight or less of CaO. The fired spinel complex oxide shows a Cu—Kα X-ray diffraction pattern in which the ratio (b/a) of the diffraction peak intensity of the silica-containing material (b) in the vicinity of 2θ=26.7° to the {113} plane diffraction peak intensity (a) in the vicinity of 2θ=36° is 0.1 or less.


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Takagi, Nobuo. (2006). Fired spinel complex oxide and method for preparing the same (U.S. Patent No. 6987077). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6987077

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