Patent ID: 7284690

Claim:
A method for producing a plurality of processed articles by processing an article to be processed within a processing apparatus and then cutting the processed article to obtain the plurality of processed articles, each having a symmetrical shape, said method comprising the following steps in the mentioned order: a step of applying a plurality of IDs onto the article to be processed; a step of processing the article to be processed onto which the plurality of IDs is applied; and a step of cutting the processed article to obtain the plurality of processed articles, wherein the step of applying the plurality of IDs is a step of applying IDs having the same machine-readable production management information or performance inspection result information but different external appearances visually distinguished from each other onto the article to be processed before cutting such that each of the plurality of processed articles after cutting has at least one of the IDs, and such that the visually different external appearances of the IDs show a position of the cut and processed article on the article to be processed before cutting, or a position or direction of the article to be processed within the processing apparatus.