Founded by Dr. Eli Harari in California in 1988, SanDisk is not only the inventor, but currently also the world's largest supplier of flash memory cards. Best known products of the company are memory cards and USB flash drives. The company also develops and produces card readers, MP3 players and accessories for its own products. With more than 860 U.S. patents and 550 foreign patents, SanDisk is the only company worldwide that has the rights to manufacture all major flash card formats and USB flash drives.