Founded in 1902, 3M is science-based company that manufacturers an array of innovative products, including immune response modifier pharmaceuticals, brightness enhancement films, flexible circuits, cell phones and other electronic devices. It offers a range of computer filters that offer privacy protection, improve visual performance and help prevent damage to computer screens. The company provides abrasives, tapes, films, adhesives, and specialty materials for the manufacture, repair and maintenance of autos, aircraft, boats and other vehicles. It provides air cleaning and computer filters to customers. In addition, 3M provides information on various animal care products, including veterinary, equine, farm and pet products. It offers digital and overhead projectors, easel pads, digital wall displays and related accessories for office meetings and presentations. 3M serves customers through six business segments, including consumer and office, display and graphics, electro and communications, health care, industrial and transportation, and safety, security and protection services business. With sales revenue of more than $24 billion, the company is also a component of the Standard and Poor's 500 Index. Headquartered in St. Paul, Minn., 3M has a presence in Westchester, Ill.