A patent for this "invention" --> *ROTFLMAO*
SJ & his engineering teams should visit a local library. You can read very thick and old books there, which describe the manufacturing of nitrided steel.
I've a forty years old book (1969) here, which describes the manufacturing and applications of nitrided steel. Maybe i should try to get a patent in the U.S. for "my great invention" of nitrided steel.
One day, SJ will patent your sweat, and will claim he invented it.
Maybe you should actually read the patent application before you make gratuitous comments. It will cover prior art and describe the exact patentable claims they are making.