Inventor
CHANG ZHIWU
CN3 patents
Patents
3 patentsUS12578194B2Mar 17, 2026
Positioning and orientation method, apparatus, and device
HUAWEI TECH CO LTD0 citations56
US12092865B2Sep 17, 2024
Grating and grating characteristic adjustment method and device
HUAWEI TECH CO LTD0 citations44
US12445221B2Oct 14, 2025
Tunable optical add/drop multiplexer
HUAWEI TECH CO LTD0 citations38