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. 17, 1978
Filed:
Mar. 18, 1976
Applicant:
Inventor:
Alfred Normand, Paris, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148 16 ; 148 165 ; 148 166 ; 252375 ;
Abstract
An atmosphere of nitrogen containing hydrogen is generated by cracking amia and recycling a previously generated atmosphere that already had been used. The atmosphere generated by cracking, and the recovered atmosphere that previously had been used, are subjected in a reactor to a catalytic treatment at a temperature between 0.degree. to 600.degree. C and then, after passing through a refrigeration arrangement, the resultant atmosphere is prepared for use. As one example, the atmosphere is adapted to be used as a protective atmosphere for metallurgical heat-treating furnaces.