DuPont chemists’ developing nylon, Teflon, and Post-it notes
History Timeline: Post-it® Notes
"Dr. Spencer Silver, a 3M scientist, was busily researching adhesives in the laboratory. In the process, he discovered something peculiar: an adhesive that stuck lightly to surfaces but didn’t bond tightly to them."
I haven't seen the context for the quote to see how it was attributed to Dupont.
