🛠️ Invention or technique

USB flash drive

Memoria USB

Date
1999 · confidence medium
Place
M-Systems, Kfar Saba, Israel
Credited to
Dov Moran, Amir Ban and Oron Ogdan (M-Systems, 1999 US patent); Trek Technology (Singapore) independently claimed the first design sold, the ThumbDrive
Field
Knowledge & symbols

⚠️ Disputed: the sources disagree.

What it is

M-Systems' team combined a flash memory chip with a USB controller in a keychain-sized case, the DiskOnKey, to replace the floppy disk as a portable data medium. They filed the patent in 1999, and the device reached the market in 2000, almost simultaneously with Singapore-based Trek Technology's ThumbDrive.

Authorship is disputed among several companies that arrived at the same idea almost simultaneously: M-Systems (Israel) obtained the first US patent, but Trek Technology (Singapore) was first to sell commercially and won patent litigation there.

What it led to

  • The practical disappearance of the floppy disk as a data medium
  • A patent war between M-Systems and Trek Technology over authorship
  • Cheaper portable storage thanks to Pua Khein-Seng's (Phison) single-chip design
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Sources✓ verified 2026-09-25