Washington Post: The retired inventor of N95 masks is back at work, mostly for free, to fight covid-19

Washington Post: The retired inventor of N95 masks is back at work, mostly for free, to fight covid-19. “Peter Tsai retired two years ago, but the materials scientist says he’s never been busier. When the novel coronavirus began gripping the globe in March, Tsai was summoned from his short-lived retirement. He was in urgent demand because he is the inventor who, in 1995, patented the filtration material used in disposable N95 respirators. The coveted masks are in short supply and are desperately needed by health-care workers and others who require protection from the highly contagious coronavirus.”

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