Serendipitous Invention (TEFLON): This Day in Patent History - On February 4, 1941 Roy Plunkett received a patent for TEFLON Serendipitous Invention – TEFLON On February 4, 1941 Roy Plunkett received a patent for “tetrafluoro-ethylene polymers” (TEFLON). Roy serendipitously invented TEFLON, while working for a…