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:
Nov. 30, 1982
Filed:
Jul. 07, 1980
Sei H Song, Des Plaines, IL (US);
Magnaflux Corporation, Chicago, IL (US);
Abstract
Method and composition for non-destructive testing of a magnetizable workpiece wherein the surface of the workpiece is treated with an aqueous emulsion of a waxy solid having fluorescent magnetizable particles suspended therein, a magnetic field is created along the workpiece so that the magnetizable particles are attracted to imperfections therein, and then sufficient water is removed from the emulsion so that the waxy solid forms a film which contains the immobilized fluorescent particles which have become attached to imperfections in the workpiece. The film may be further protected by the application of finely divided abrasion resistant particles, such as glass beads or glass powder.