Patent ID: 6837943

Claim:
A method of removing a targeted substance from a substrate which includes a conductive pattern located at a surface of the substrate, the substance being located adjacent the conductive pattern, said method comprising: a chemical treatment comprising supplying a stripping solution to the surface of the substrate, the stripping solution having an ability to remove the targeted substance and which ability is enhanced when the stripping solution is heated, while the stripping solution is on the surface of the substrate, inducing a current in the conductive pattern by exposing the substrate to an alternating magnetic flux to thereby heat the conductive pattern, such that the stripping solution adjacent the conductive pattern is heated, and maintaining the heated stripping solution on the surface of the substrate for a period of time sufficient for the heated stripping solution to remove at least some of the targeted substance from adjacent the conductive pattern; and a subsequent cleaning process of removing the stripping solution from the substrate.