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Historical Timeline This section contains highlights, technological breakthroughs and company achievements from over 100 years of 3M history.
Click each decade to learn more:
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1920-1929
Ideas thrive
The 20’s were a busy time for 3M. In 1921, 3M™ Wetordry™ Waterproof Sandpaper — the world’s first  water-resistant coated abrasive — was patented and introduced. The first formal product research began  in 1924 and was crucial to the development of Scotch® Masking Tape, which debuted one year later. 3M organized its Engineering Department in 1928.
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