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. 20, 1989
Filed:
May. 08, 1987
Applicant:
Inventor:
Robert Wang, Wissous, FR;
Assignee:
Societe Stein Heurtey, Z.A.I., Ris Orangis, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; C23G / ;
U.S. Cl.
CPC ...
134 40 ; 134 19 ; 148 203 ;
Abstract
A method of degreasing a cold rolled metallic band, through the chemical effect of an atmosphere of a determined composition, according to which the heating and degreasing actions are separated, wherein the heating is carried out in an enclosure provided with means for applying heat by radiation, and the degreasing is obtained by the chemical effect of said atmosphere in the heating enclosure, said method being characterized in that said atmosphere is made of a mixture of nitrogen and hydrogen enriched with steam injected in the degreasing section of said enclosure.