Inventor

LIU YANFEI

CA21 patents

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

LIU YANFEI

ZHONGSHAN FANCYSPACE TECH CO LTD

Pet metal crate

Pet crate

Pet crate

Pet crate

Latch for pet play pen

GEN ELECTRIC

Auxiliary circuit for micro-electromechanical system relay circuit

Micro-electromechanical system relay circuit

Isolated control circuit and driver for micro-electromechanical system switch

SUMIDA ELECTRIC H K COMPANY LTD

Power supply module

Power supply module

Manufacturing method for a power supply module

TELLYES SCIENT INC

Eyepiece, eye simulator device, mannequin simulator and training method

Warming of simulated blood using waste heat generated by electronic components

SUMIDA ELECTRIC (H K ) COMPANY LTD

Power supply module

Coil with variable inner diameter and electronic module made from the coil

WANG HONGLIANG

Five-level topology units and inverter thereof

LIU YANFEI

Polyethylene imine based pigment dispersants

BASF SE

Polyamine-polyacrylate dispersant

YANFENG INTERNATIONAL AUTOMOTIVE TECH CO LTD

Hanging structure for seating foam

KOU HUIGUANG

Polyethylene imine based dendritic dispersant

CUI LONGLAN

Method for producing block copolymers