YC

Yi-Chih Chang

WI Waltop International: 2 patents #1 of 5Top 20%
📍 Jinshanmian, TW: #69 of 188 inventorsTop 40%
Overall (2021): #96,867 of 548,734Top 20%
2
Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11023057 Stylus structure having a barrier unit for contacting with a trigger component Ju-Ming Lin, YING-HWA TANG 2021-06-01
10895930 Message erasing device and message erasing system YING-HWA TANG 2021-01-19