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. 30, 2009
Filed:
May. 05, 2004
B. William Cooper, Lloyd Harbor, NY (US);
John Duerr, Massapequa Park, NY (US);
B. William Cooper, Lloyd Harbor, NY (US);
John Duerr, Massapequa Park, NY (US);
Spectronics Corporation, Westbury, NY (US);
Abstract
A leak detection dye carrier is formed using a two-stage process (). In a first stage, the dye carrier () is saturated with a mixture () of a dye powder and an evaporable solvent, such as alcohol. The solvent is permitted to evaporate leaving dispersed dye solids () on the dye carrier (). In a second stage, the dye carrier () and dispersed dye solids () are immersed in a wet bath (). The method may be a hybrid of dry and wet systems of placing dye onto a substrate carrier in which the wet bath is a mixture of a dye and a solvent, such as a system lubricant. Alternatively, the immersion of the dye carrier in the second stage may be limited in duration to prevent the dye solids in the first stage from being dissolved.