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. 15, 1999
Filed:
Sep. 26, 1997
Applicant:
Inventors:
Douglas D Zeigler, Atwater, OH (US);
James M Tanzosh, Silver Lake, OH (US);
Walter R Mohn, North Canton, OH (US);
Assignees:
McDermott Technology, Inc., New Orleans, LA (US);
The Babcock & Wilcox Company, New Orleans, LA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ; C23C / ;
U.S. Cl.
CPC ...
427252 ; 427191 ; 427305 ; 427347 ; 4273768 ; 4273837 ; 427421 ; 427427 ; 148264 ; 148605 ;
Abstract
An improved process for chromizing commercial quantities of small, industrial, ferrous-based parts, such as but not limited to threaded connectors, pins, bolts, nuts, washers, fasteners, fittings, couplings, studs, etc., uses a retort filled with layers of parts coated with a chromium-containing slurry. The plurality of parts are arranged in layers on sheets of refractory felt paper and are heat treated simultaneously for causing the chromizing reaction between the slurry and the ferrous-based parts.