Even prior to those guys, Shockley, Bardeen, and Brattain have the 1956 Nobel Prize in Physics for their work. Kilby received the same in 2000 (Noyce passed away in 1990).

This is the same fallacy as when people say Europe doesn't contribute to tech industry because they don't have huge software companies. All the software companies progress on the back of several asian and European companies. Most semiconductor manufacturing equipment is made either by European companies (ASML, Zeiss etc.), or by asian companies (TEL, TSMC, Gigaphoton etc.) This is why ASML till a few years ago used to bill itself as "the most important company you have never heard of".

Fame is never fair and balanced, it seems. I would think there are lots of other engineers, who don't even have a wikipedia article, who made important contributions as well.