SC

Sheng-Fan Chang

PE Primax Electronics: 10 patents #46 of 571Top 9%
Overall (All Time): #477,289 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12374511 Keycap Lei-Lung Tsai, Chang-Huan Shen 2025-07-29
12362110 Keycap Che-An Li, Chang-Huan Shen, Chuang-Shu Jhuang 2025-07-15
12211657 Keycap Lei-Lung Tsai, Che-An Li, Chang-Huan Shen 2025-01-28
11626259 Membrane circuit structure Lei-Lung Tsai, Chin-Sung Pan 2023-04-11
11610745 Key structure Lei-Lung Tsai, Chin-Sung Pan 2023-03-21
11342133 Key structure Lei-Lung Tsai 2022-05-24
11145474 Keyboard device and key structure thereof Chin-Sung Pan, Chien-Hung Liu, Lei-Lung Tsai, Tsu-Yi Chen, Chun-Yuan Liu 2021-10-12
10832877 Keycap forming method Che-An Li 2020-11-10
10777371 Key structure Lei-Lung Tsai 2020-09-15
10699858 Keyboard device Che-An Li, Ding-Hsiang Pan, Chia Feng Lee 2020-06-30