Season 5, Episode 3 (episode 503, aired October 4, 2013) opened with Chris Johnson walking onto the Shark Tank carpet carrying a square orange tray and a grin that said, “watch this.” Mark Cuban, Lori Greiner, Kevin O’Leary, Barbara Corcoran, and Robert Herjavec sat ready. Johnson asked for $300,000 for 10%—a $3 million valuation—backed by his claim that the Rapid Ramen Cooker could make the best microwaved noodles on the planet in four minutes flat. The Sharks had a full view of the product: a BPA-free, microwave-safe polypropylene tray molded to fit a standard ramen brick with raised fill lines. Johnson said it cost about $0.75 to make and retailed…