Inventor

CHANG HUAN

CN7 patents

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

KINGFA SCIENCE & TECHNOLOGY CO

2 patents

US12240947B2Mar 4, 2025

Flame-retardant semi-aromatic polyamide and preparation method thereof

KINGFA SCIENCE & TECHNOLOGY CO0 citations57

US12534573B2Jan 27, 2026

In situ polymerized flame retardant, preparation method thereof, and molding composition comprising thereof

KINGFA SCIENCE & TECHNOLOGY CO0 citations44

LIANG SAM SONG

1 patent

US8990107B2Mar 24, 2015

Determining user stays of a user of a mobile device

LIANG SAM SONG16 citations82

CHANG HUAN

1 patent

US10027923B1Jul 17, 2018

Methods and system for recording, searching and faithful reproduction of sensations

CHANG HUAN16 citations76

FAROUK SYSTEMS INC

1 patent

US11134764B2Oct 5, 2021

Hot iron and curler with brush bristles

FAROUK SYSTEMS INC2 citations71

SHENZHEN CYWEEMOTION TECH CO LTD

1 patent

US12375868B2Jul 29, 2025

Control method and system using the same

SHENZHEN CYWEEMOTION TECH CO LTD0 citations54

XUANHUA IRON AND STEEL GROUP CO LTD

1 patent

US12234521B2Feb 25, 2025

Method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma

XUANHUA IRON AND STEEL GROUP CO LTD0 citations38