Discovered in 1853 and popularized in the 1920s by Thomas Midgley Jr., Tetraethyllead (TEL) served as an incredibly effective "antiknock" agent for gasoline.
In biology and medicine, "tel-" (from the Greek telos , meaning "end") refers to telomeres , the protective caps at the ends of linear chromosomes. Corporate Summary - Tokyo Electron Ltd. Discovered in 1853 and popularized in the 1920s
Starting in the 1970s, countries began banning TEL due to its toxicity and its tendency to ruin the catalytic converters required for modern emission standards. Today, its use is almost entirely restricted to specialized aviation fuels (avgas). 2. Tokyo Electron Limited (TEL): A Semiconductor Giant Starting in the 1970s, countries began banning TEL
In the world of technology, TEL refers to Tokyo Electron Limited , a Japanese multinational and the world’s fourth-largest manufacturer of semiconductor production equipment as of 2025. Tokyo Electron Limited (TEL): A Semiconductor Giant In