Sticky lawsuit: $400M dispute lingers over Post-it inventor
Alan Amron has invented a battery-powered squirt gun, a digital photo frame, even a laser system that may someday provide a visible first-down line for fans inside NFL stadiums. He holds 40 U.S. patents, but he's most interested in an invention for which he gets no credit: the Post-it Note, that ubiquitous sticky-back product made into a worldwide success by the 3M Company.