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Who invented thumb drive?

Albert Einstein.~Sb

USB flash drives were invented at M-Systems, an Israeli company, in a US patent filed in April 5, 1999 by Amir Ban, Dov Moran and Oron Ogdan, all M-Systems employees at the time. The product was announced by the company in September 2000, and was first sold by IBM in 8MB capacity starting December 15, 2000.

Pua Khein-Seng from Malaysia is considered by many to be the "Father of Pen Drive". He is notable for incorporating the world's first single chip USB flash controller. Pua hails from Sekinchan, Selangor, Malaysia. Pua founded Phison Electronics based in Taiwan with four other partners and is believed to have produced the world's first USB flash drive with system-on-chip technology.

Competing claims have been made by Singaporean company Trek Technology and Chinese company Netac Technology, Both Trek Technology and Netac Technology have attempted to enforce their patent claims. Trek won a Singaporean suit, but a court in the United Kingdom revoked one of Trek's UK patents. While Netac Technology has brought lawsuits against PNY Technologies, Lenovo, aigo, Sony, and Taiwan's Acer and Tai Guen Enterprise Co, most companies that manufacture USB flash drives do not license Trek and Netac's patents.

Dov Moran an Israeli Entrepreneur and Inventor

USB flash drives were invented at M-Systems, an Israeli company, in a US patent filed in April 5, 1999 by Amir Ban, Dov Moran and Oron Ogdan, all M-Systems employees at the time.[8]