Inventor

Zhang quan wen

CN3 patents

Patents

3 patents

US9632603B2Apr 25, 2017

Discrete password entry using keyboard with character and position carriers

IBM12 citations82

US9971416B2May 15, 2018

Chinese character entry via a Pinyin input method

IBM3 citations66

US11150739B2Oct 19, 2021

Chinese character entry via a Pinyin input method

IBM0 citations56