7 Companies Built Around Really Old Products

Popular, decades-old products can be a blessing and a curse. For some businesses, these tried-and-true items account for a large chunk of sales. But if a newer, hipper, better product comes along...? 24/7 Wall St. looks at seven companies whose fame and fortune largely rests on aging products:

• Kellogg: Its first (and still flagship) product was Corn Flakes, introduced in 1896 as part of Harvey Kellogg's effort to create a food acceptable for vegetarian-minded Seventh-day Adventists.

• Coca-Cola Company: It rakes in plenty of dough from sales of VitaminWater and Odwalla juice, but Coca-Cola, introduced in 1886, is what makes up the majority of its sales.
• Mattel: It produces everything from Hot Wheels to American Girl dolls to Uno, but the Barbie, introduced in 1959, is its No. 1 item; researchers believe more than 1 billion have been sold.
• Goodyear: With plants in 23 countries, it's the No. 1 tiremaker in North America and Latin America ... but tires remain its mainstay.

Click for the full list. (Read more Kellogg stories.)