From 1998 to 2000, many companies claimed that they were the first to invent USB flash drives. Include China Netac Technology, Israeli M-Systems and Singapore Trek Company.
However, the real patent for the basic invention of U disk is China Netac. In July 2002, Netac's "Flash electronic external storage method and device for data processing system" (patent number: ZL 99 1 17225.6) was officially authorized by China National Intellectual Property Administration.
This patent fills the gap of invention patent in the field of computer storage in China for 20 years. The acquisition of this patent right has caused a great shock to the entire storage industry. Including Israeli M-Systems, immediately filed an invalid reexamination with China National Intellectual Property Administration, China, which once became a patent dispute that shocked China and foreign countries in the global flash memory field.
However, on February 7, 2004, 65438, Netac obtained the basic invention patent of flash disk officially authorized by the US National Patent Office, with the US patent number of US6829672. The acquisition of this patent right finally ended the struggle. China Netac is the world's first inventor of USB flash drive.
Extended data:
The composition of the U disk is very simple, mainly consisting of a shell and a movement, among which:
1, movement: the movement includes a PCB+USB main control chip+crystal oscillator+chip resistor, capacitor +USB interface+chip LED (not all USB flash drives) +FLASH chip;
2. Shell: classified by material, including ABS plastic, bamboo, metal, leather case, silicone, PVC software, etc. According to styles, there are card type, pen type, mini type, cartoon type, business type and simulation type. According to the function classification, there are encryption, antivirus, waterproof, intelligent and so on;
3. For some PVCUu USB flash drives with special shapes, special packaging is sometimes made.
Baidu Encyclopedia -u disk (USB flash drive)