Hewlett-Packard (HP) Company, founded in 1939 and based in Palo Alto, California, is a Fortune 500 company providing clients across 170 countries with computing, printing, scanning, digital photography, data storage, and other software and hardware products. The firm's systems operate across the Microsoft (R) Windows (R), Linux, and Macintosh platforms. The company offers customers inkjet and laser printers, printer supplies, scanners, print servers, disk and storage devices, desktop and notebook computers, handheld computers, blade servers, and other products. The firm is known for its Compaq, HP Open Call, HP Open View, HP Media Center, iPAQ, HP Movie Writer, DesignJet, LaserJet, Vivera, and ColorSphere brands. The company holds 30,000 patents on its technologies. It also provides clients with design, integration, data recovery, business process outsourcing, and other support services. The firm encompasses the Personal Systems, Imaging and Printing, and Technology Solutions groups. It markets products to consumers, resellers, and original equipment manufacturers (OEMs). HP acquired Compaq Computer Corporation in 2002. HP is listed on the New York Stock Exchange and NASDAQ under the HPQ symbol. It is listed on the United States, United Kingdom, Europe, and Global FTSE4Good indices. It has won recognition from 'The Economist,' Innovest Strategic Value Advisors, AccountAbility, and Core Ratings. HP was founded by William R. Hewlett and David Packard.