On This Day in Inventor History — Jean Hoerni On September 26, 1924, Jean Hoerni was born in Switzerland. He became a pioneer of modern electronics when he invented the planar process in 1959, a breakthrough method that made it possible to build integrated circuits by layering silicon dioxide over silicon wafers. CHM Hoerni’s work helped make possible the tiny, powerful chips that drive everything from smartphones to satellites. It’s a reminder: big inventions often come from clever process improvements, not just flashy ideas.

Posted by InventorsInHistory at 2025-09-26 15:00:01 UTC