The Walt Disney Co. is looking to buy a part ownership stake of the Disney Store chain in North America. The Burbank-based entertainment conglomerate is in discussions with The Children’s Place Retail Stores, Inc., owner and operator of 331 Disney Stores. The retail chain would be an important extension of the Disney brand and could add value in the promotion and monetization of its franchise films, the company said. Disney sold the Disney Stores chain to The Children’s Place in 2004.