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:
Jul. 06, 1993
Filed:
Jan. 22, 1992
Applicant:
Inventor:
David B O'Donnell, Huntington, WV (US);
Assignee:
Inco Alloys International, Inc., Huntington, WV (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250302 ; 2504591 ; 2504611 ; 134113 ;
Abstract
The invention provides a method of improving cleaning operations for metals. A fluorescent dye is introduced into metal treatment solution and the surface of a metal product is treated with the treatment solution. The metal product with the treatment solution on its surface is worked to deform the metal product. The treatment solution is removed from the surface of the metal product to clean the metal product. The cleaned metal product is illuminated with excitation energy capable of stimulating fluorescence in the fluorescent dye. Fluorescence of the fluorescent dye is optically monitored to determine effectiveness of the removing step.