HIV-b vaccine at 90% succse rate, now going into 2nd human trial,
And a he'll of a lot of other medical stuff.
Magnetic, light and other wave length invisibility
Translucent concrete, but maybe not in your criteria as it's based on normal concrete.
It's hard because all new inventions are based on or use older technology. So strictly speaking there probley isn't any, anywhere in time. Even gps is based on older principles and those principles are based on older things, so on and so forth.