Inventor

YAN YUNFEI

CN20 patents

⚠️ This page may combine multiple inventors who share the name “YAN YUNFEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YAN YUNFEI

HUAWEI TECH CO LTD

Reconfigurable optical add/drop multiplexer

Optical communications apparatus and method

Gain adjuster, gain adjustment method, and optical line terminal

Reconfigurable optical add/drop multiplexer

Wavelength selective switch, reconfigurable optical add/drop multiplexer, and wavelength selection method

Optical cross-connect

Display apparatus and method, and vehicle

Power equalizer and adjustment method therefor

Spectrum processing apparatus and reconfigurable optical add-drop multiplexer

Signal monitoring method and apparatus for wavelength selective switch WSS

Method and apparatus for transmitting optical signal, and wavelength selective switch

Optical power equilibrium method and apparatus

XIAN THERMAL POWER RES INST CO

System and method of black start for new power system with energy storage configuration

System and method for frequency modulation based on direct current controllable load

Thermal-power direct-hung energy-storage frequency modulation plant backup power system

SHENZHEN YINWANG INTELLIGENT TECHNOLOGY CO LTD

Display apparatus and display system

Head-up display system and image display method based on head-up display system

LANXESS CORP

Color stable treated fabric and method of making the same

DOW GLOBAL TECHNOLOGIES LLC

Paper composition and process for making the same

YAN YUNFEI

Polyurethane dispersion based synthetic leathers