Kellogg's products are manufactured in 18 languages and marketed in over 180 countries. Kellogg's largest factory is at Trafford Park in Trafford, Greater Manchester, United Kingdom, which is also the location of its European headquarters. Other corporate office locations outside of Battle Creek include Chicago, Dublin, Shanghai, and Querétaro City. Kellogg's holds a Royal Warrant from Queen Elizabeth II and the Prince of Wales.
Brothers Dr. John Harvey and Will Keith Kellogg founded a health food company, the Battle Creek Sanitarium Health Food Company in 1898. This company produced foodstuffs for current and former patients at Dr. J. H. Kellogg's Battle Creek Sanitarium. The company later became known as the Battle Creek Sanitarium Food Company in 1901. During this time, the company produced and marketed health foods such as corn flakes, Granola and Caramel Cereal Coffee.
The company merged with the Sanitas Nut Food Company (founded in 1899 by Dr. J. H. Kellogg) to become the Kellogg Food Company in July 1908, and sold nut butters and meat substitutes, and it was then that the company's products all began to be sold under the trade name, "Kellogg's". At this time, Dr. J. H. Kellogg owned all but 2 of its 15,000 shares of stock. In 1921, it changed its name back to Battle Creek Food Company.
However, Dr. John Harvey forbade his brother Will from distributing cereal beyond his patients. As a result, the brothers fell out, and W. K. launched the Battle Creek Toasted Corn Flake Company on February 19, 1906. Convincing his brother to relinquish Sanitas's rights to the product, Will's company produced and marketed the hugely successful Kellogg's Toasted Corn Flakes and was renamed the Kellogg Toasted Corn Flake Company in 1909, taking on the current name of the Kellogg Company in 1922.
According to wikipedia