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:
Apr. 03, 1990
Filed:
Nov. 23, 1988
Applicant:
Inventor:
Joseph A van der Hoeff, Limmen, NL;
Assignee:
Hoogovens Groep B.V., Ijmuiden, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27D / ;
U.S. Cl.
CPC ...
432-3 ; 266281 ; 432 76 ; 432 95 ;
Abstract
In the repair of a refractory lining of a shaft furnace having a steel shell, a worn residual refractory lining inside the shell and cooling plates extending through the shell into the refractory lining, the worn lining is retained and an additional lining structure is added by