 A new type of MOSFET logic, CMOS (complementary MOS), was invented by Chih-Tang Sah and Frank Wanlass at Fairchild Semiconductor, and in February 1963 they published the invention in a research paper.The self-aligned gate (silicon-gate) MOSFET transistor was invented by Robert Kerwin, Donald Klein and John Sarace at Bell Labs in 1967.Fairchild Semiconductor researchers Federico Faggin and Tom Klein later used self-aligned gate MOSFETs to develop the first silicon-gate MOS integrated circuit.