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:
Mar. 09, 2010
Filed:
Jul. 31, 2008
Osamu Tsuge, Kobe, JP;
Yasuhiro Tanigaki, Kobe, JP;
Isao Kobayashi, Kobe, JP;
Koji Tokuda, Kobe, JP;
Shoichi Kikuchi, Kobe, JP;
Shuzo Ito, Kobe, JP;
Osamu Tsuge, Kobe, JP;
Yasuhiro Tanigaki, Kobe, JP;
Isao Kobayashi, Kobe, JP;
Koji Tokuda, Kobe, JP;
Shoichi Kikuchi, Kobe, JP;
Shuzo Ito, Kobe, JP;
Midrex International B.V. Zurich Branch, Zurich, CH;
Abstract
A hearth material is laid in the form of a layer on the hearth prior to supply of a mixture containing a carbonaceous reducing agent and iron oxides onto a hearth of a reduction melting furnace, thereby forming a renewable hearth capable of being renewed, and the metallic iron is produced while renewing a part or the whole of the renewable hearth, which has deteriorated during operation, with the hearth material.