Inventor

USHIKU SHINICHI

JP3 patents

Patents

3 patents

US10921909B2Feb 16, 2021

Input touch pen

MITSUBISHI PENCIL CO2 citations69

US11221686B2Jan 11, 2022

Multifunction pen

MITSUBISHI PENCIL CO2 citations68

US11472222B2Oct 18, 2022

Multifunction pen

MITSUBISHI PENCIL CO0 citations58