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:
Jun. 29, 2010
Filed:
Jul. 02, 2007
Applicants:
Jörg Mittag, Wiesbaden, DE;
Oswin Öttinger, Meitingen, DE;
Inventors:
Jörg Mittag, Wiesbaden, DE;
Oswin Öttinger, Meitingen, DE;
Assignee:
SGL Carbon SE, Wiesbaden, DE;
Primary Examiner:
Int. Cl.
CPC ...
C21B 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Expansion joints located in the upper part of the hearth walls of a reduction furnace are filled with a plate-shaped compressible graphite filler having a density of 0.1 to 0.2 g/cm. A method of manufacturing such a joint filler is also provided.