You were saying??? I see you don't know how to use an advanced search seeing as you look for the simple ways of finding things of complicated matters. I put the url and let's see if it shows up. If it doesn't go the site and go to advanced searches, type in the patent number you bonehead! In case you don't know it it's 7,245,790. I also put in the actual pdf so you can see the technology. Being an Aviation Structural Technician for more than 20 years I see this technology being used and needed to detect corrosion in areas that are missed during a heavy check inspection. Corrosion will lead to structural fatigue and could be catastrophic if missed. Enjoy...