Founder of Thai energy drink producer T.C. Pharmaceuticals. Teamed up with Austrian Dietrich Mateschitz two decades ago to create energy drink Red Bull. Chaleo provided beverage formula and his partner contributed the marketing flair. Today Red Bull, which has $5 billion (sales), plans to expand to China this year. Each partner owns 49% of the company. Chaleo's son, Chalerm, who owns one of Asia's leading wine producers, Siam Winery, holds remaining 2%. Family upped stake in privately held Piyavate Hospital. According to The Nation article with his son, Mr. Saravudh, Mr. Chaleo hadn't given an interview or made a public appearance in 30 years. State-run broadcaster MCOT said he died in Bangkok on Saturday due to natural causes. His date of birth couldn't be confirmed.