Inventor

CHEN YONGDI

CN2 patents

Patents

2 patents

US12449744B2Oct 21, 2025

Developing cartridge

ZHUHAI NINESTAR INFORMATION TECH CO LTD0 citations45

US12596316B2Apr 7, 2026

Developing cartridge

ZHUHAI NINESTAR INFORMATION TECH CO LTD0 citations43