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:
Jan. 22, 1985
Filed:
Mar. 15, 1983
Masato Fujioka, Kitakyushu, JP;
Katsuyoshi Kobayashi, Kitakyushu, JP;
Koichi Yuta, Kitakyushu, JP;
Nobuyoshi Nishihara, Kitakyushu, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A continuous heat treatment furnace for heat-treating a metal strip by passing the metal strip continuously through the interior of the furnace, comprising a wall of an air-permeable solid having a three-dimensional skeleton structure or net-like laminate structure satisfying the following requirement: ##EQU1## wherein .delta. stands for the thickness (m) of the air-permeable solid wall, a.sub.p the specific surface area (m.sup.2 /m.sup.3) of the air-permeable solid wall, and .epsilon. a porosity of the air-permeable solid wall, is arranged between the confronting surfaces of the strip.