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:
Feb. 16, 1993
Filed:
Aug. 12, 1991
Applicant:
Inventor:
Carl-Heinz Stiasny, Gais, IT;
Assignee:
Viscodrive GmbH, Lohmar, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G21D / ;
U.S. Cl.
CPC ...
148206 ; 148604 ; 266252 ;
Abstract
A method of treating apertured plates with a gaseous medium, e.g. to produce a nitride surface layer thereon, by placing the plates in rows in a furnace and causing the gaseous medium to flow across the surfaces of the plates by circulating the medium through the furnace and deflecting the medium as it flows along the furnace walls away from the walls to give a substantially uniform flow of gas across the plate surfaces.